Standard

Sunny Steel produce an extensive selection of welded steel pipe including Electronic Resistance Welded (ERW), Electronic Fusion Welded (EFW), and Double Submerged Arc Welded (DSAW) carbon steel pipe along with their respective flanges and fittings.

ASTM A53 Standard Specifications

ASTM A53 pipe (also referred to as ASME SA53 pipe) is intended for mechanical and pressure applications and is also acceptable for ordinary uses in steam, water, gas, and air lines. It is suitable for welding, and suitable for forming operations involving coiling, bending, and flanging, subject to certain qualifications.

ASTM A252-89 Welded and seamless steel pipe piles

ASTM A252 standard covers nominal wall cylindrical steel pipe piles in which the steel cylinder acts as a permanent load-carrying member or as a shell to form cast-in-place concrete piles. Each welded pile shall be made by seamless, electric resistance welding, flash welding or fusion welding with longitudinal, helical-butt, or helical-lap seams.

API SPEC 5L standard specifies

API SPEC 5L is a international standard specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries.

ASTM A500 cold formed welded and seamless structural tube

ASTM A500 standard specification covers carbon steel, cold formed welded and seamless structural tube in both round and shaped forms.

Buried polyurethane prefabricated insulating tube

Buried polyurethane prefabricated insulating tube is composed of a steel pipe, plastic polyurethane rigid foam insulation layer and glass avant-garde enhancement (i.e. glass steel) prefabricated outer protective layer combined closely tube.

Polyurethane insulation pipe has the capacity of light, high strength, heat and sound insulation, flame retardant, cold resistance, anti-corrosion, non absorbent, convenient construction and other excellent characteristics, has become the construction, transportation, petroleum, chemical, electric power, cold storage and other industrial sectors insulation, waterproofing, sealing and other essential materials. Polyurethane insulation pipe used for various indoor and outdoor pipe, heating, cooling, oil, gas and other pipeline, central air conditioning, chemical, pharmaceutical and other industrial pipe insulation, cold preservation engineering.

Compared with the traditional types of pipe insulation pipe buried prefabricated polyurethane insulation has the advantages of very prominent:
1, good performance of heat preservation, heat loss is only the traditional pipe 25%, long-term and can save a lot of energy operation, significantly reduce energy costs.
2, has the very strong waterproof and corrosion resistance, without a trench, can be directly buried in the ground or water, construction is simple and rapid, low comprehensive cost.
3, under the condition of low temperature also has good corrosion resistance and impact resistance, can be directly embedded underground permafrost.
4, the service life can reach 30-50 years, the correct installation and use of the pipeline repair cost is very low.
5, you can set the alarm system, automatic detection of pipe network leakage fault, accurate fault location and automatic alarm indication.

Large diameter pipes

We are manufacturer of Large diameter pipes and supply high quality Large diameter pipes in both large and small quantities worldwide & offer you the best prices in the market.

We have a team of experienced professionals with years of experience in manufacturing.

Large diameter pipes (Carbon Pipes) Specification

Large diameter, mill certified API linepipe from 323.9 mm outside diameter through to 1220 mm outside diameter in varying wall thicknesses. All stock to a minimum of 350 MPA physical yield stengths.

High Quality S.A.W Spiralweld Pipes

600mm – 3000mm Diameter.

Product Type: ASTM A106/A53 GR.B

Product Name: 14 inch LSAW Large diameter welded carbon steel pipe

14 inch LSAW Large diameter welded carbon steel pipes

size: 14 inch, DN350, 355.8mm LSAW Large diameter welded carbon steel pipes

Outer diameter: ASTM 355.8mm, DIN 355.6mm, JIS 355.6mm 14 inch steel pipe

Material: ASTM A106 GR.B, ASTM A53 GR.B, 20#, Q235, STPY41, STPG38, STB30, STB33, STB35, STPT42 etc

14 inch LSAW tube Large diameter welded carbon steel pipe

Standard: ASME B36.10M /ANSI B36.10M, API, GB, SH, HG, MSS, JIS, DIN etc

14 inch LSAW steel pipe Thickness: DIN 8mm, JIS 7.9mm, ASME 6.35, 7.92, 9.52, 11.1315.09, 12.70, 19.05, 23.83, 27.79, 31.75, 35.71mm

Thickness Tolerance: ±12.5%

Length: Min 3 Meters, Max12 Meters, or according to customer’s requirement

Ends: Beveled/Straight cut, Plastic or Metal ends protetcors

Coating: Black painting/Vanish painting 3PE coated etc

Marking: According to standard or according the customer’s requirement

Large diameter pipes (Carbon Pipes) Usage

• Fluid, boiler, hydraulic, gas, oil, chemical fertilizer, structure pipes etc.
• For low pressure liquid delivery such as water, gas and oil Alpine zone, the sea, the city densely populated areas.

Thick wall ERW pipes

We are manufacturer of Thick wall ERW pipes and supply high quality Thick wall ERW pipes in both large and small quantities worldwide & offer you the best prices in the market.
We have a team of experienced professionals with years of experience in manufacturing.

Thick Wall ERW Pipes Specification
Product Type：API 5L GR.B

Product Name：API 5L steel pipe wall thickness 50mm

API 5L steel pipe wall thickness 50mm

• Size: 20 inch, DN5000 API 5L GR.B steel pipe
• Outer diameter: ASTM 508mm, DIN 508mm, JIS 508mm
• Wall Thickness: 50mm, SCH160 carbon steel pipe
• Length: 3-12 Meters

API 5L steel pipe wall thickness 50mm

Seamless API 5L Steel Pipe: 1/2″～24″, DN15～DN600, OD21.3MM～609.6MM

Welded API 5L Steel Pipe: 1/2″～48″, DN15～DN1200, OD21.3MM～1219.2MM

Grade: API 5L PSL1-B, X42, X46, X52, X56, X60, X65, X70, X42M, X46M, X52M, X56M, X60M, X65M, X70M

Standard: ASME B36.10M/ANSI B36.10M, API, GB, SH, HG, MSS, JIS, DIN ect

Industrial Processes: hot rolledd, hot expanded, cold drawn

Why Welding steel tube?

Welding steel tube is one pipe the surface has the steel pipe joint,which is use the steel belt or steel plate material through the bending deformation into round ,square ect then welded into shape.

The tube is manufactured without a seam, making it a better pipe to carry gas. The black steel pipe is also used for fire sprinkler systems because it is more fire-resistant than galvanized pipe.

Welded steel tube products are widely used in boilers, automobiles, ship building lightweight structural steel of the doors and windows, furniture, agricultural machinery, scaffolding, wire conduit, top shelves, containers, etc.. which can meet customer requirements, the special specifications welded pipe can be processed according to user requirements. Welded pipes for conveying water, sewage, gas, air, heating, steam and other low-pressure fluid and other uses.

According to different welding methods can be divided into electric arc welding tube, the high frequency or low frequency electric resistance welded pipe and gas welding tube, furnace welding pipe , bondi pipe, etc.

ERW: Electric Resistance Welded steel tube used in oil drilling and machinery manufacturing, etc.

Furnace tube welding pipe can be used for water gas pipe, etc .

LSAW: Longitudinal Submerge-arc Welded used for high pressure straight oil and gas transportation etc.

SSAW: Spiral welded pipe used for the oil and gas transmission, and pipe pile etc.

Pipe Coating: HDPE/ 3PE/ 3PP/ Pipe cement mortar lining

Mill Test Certificate: EN 10204/3.1B 
Third party inspection: SGS, BV, Lloyds etc.

Pipe cement mortar lining

Cement mortar lining can ensure a safe and abundant water supply for your water customers for many years to come. Cement will also extend pipe life by inhibiting the corrosion of ferrous materials and preventing future rust and tube regulation build up.

Water pipe or pipe through the centrifuge tube wall spraying machine in the formation of 8 - 16 mm of cement coating, a major role in the protection of water quality. Imperial produces quality linings per AWWA standard C-205, API practice 10E, or per your Custom-specified mix. A durable, cost-effective, timeproven choice for protecting steel pipe interiors for over a Century. Appropriate for above or below-ground applications in potable and reclaimed water systems.

Diameter range is Φ325 ~ Φ2220

Inspection: Hydraulic Testing, Eddy Current, Infrared Test;
The thired party, SGS, BV, can be accepted.

Certificate: Certificate: API 5L, API 5CT. ISO 9001; CE and so on.
Resistant to chemical corrosion, resistance to cathodic disbondment resistance, mechanical damage to properties.

Cement mortar lining can be applied to the interior surfaces of carbon steel pipes including potable water transmission, fire water, waste-water and seawater transfer and injection lines.

The cement mortar lining provides the following benefits:
• Physical protection to the pipe surface.
• Chemical protection to the pipe surface, i.e. should any aggressive fluid seep through the lining to the pipe wall, it will have been rendered completely harmless from a corrosion point of view owing to the free lime in the mortar which converts the effluent into an alkaline solution.
• Extends the life of the pipe.
• Reduces pipe maintenance costs.
• Ensure optimum hydraulic characteristics.

The protection provided by the cement mortar lining can increase the effective life of the pipe up to 100 years, depending on its condition and environment.

The cement mortar lining is applied utilizing Raymond's "Centriline" centrifugal process, which involves the controlled movement of a lining machine through stationery pipe, fittings or spools.

The "Centriline" centrifugal lining process has several advantages over the alternative "Spinning" Method, including:

• Linings are more dense and homogeneous
• Contains more cement resulting in extra strength and corrosion protection.
• Higher compressive, tensile and flexural strength.
• Centrifugal lining equipment is portable and more flexible.
• Spun lining equipment is only suitable for lining of straight pipes at a fixed factory location.

Lining can be performed at our Eastern Province Complex, or at a conveniently located, temporarily erected, lining facility to suit project requirements.

High-density polyethylene jacket pipe

High-density polyethylene jacket tube is widely used in oil pipelines, gas pipelines, urban heating pipes, water pipes, electricity and other corrosion engineering, product quality and service by the users of a good level.

High Density Polyethylene (HDPE) Jacketed System is designed for piping systems above or below ground suitable for inside or outside applications. High quality polyurethane foam insulation combined with a durable watertight jacket supplied in 20' or 40' lengths, means an economical, high-quality system.

High density polyethylene jacket corrosion structure: the outer surface of pipe wrapped in high-density polyethylene material, with a high mechanical strength and excellent corrosion resistance, can protect the steel in the transportation, installation and use of the process to avoid external factors the damage. Manufacture of stent should be added antioxidants, UV stabilizers and carbon black, etc. Polyethylene jacket tube easy to aging, such as open storage tarpaulin and other items appropriate to cover, dumps should stay away from high heat and fire, anti-corrosion steel pipe made after the ban exposure, sudden cold, or polyethylene jacket tube easy to crack, the impact product performance and service life. 

Calculated as follows:
OD ≤ 400mm, the upper and lower deviation, and = 0.1 × of the nominal wall thickness of +0.2
Diameter ≥ 400mm, the upper and lower deviation = 0.15 × the sum of the nominal wall thickness of +0.2

3PE Coating Steel Pipe
Coating Material : Epoxy Powder, Adhesion, Polyethylene Or Polypropylene, Cement Inside 
Standard: API 5L (PSL1, PSL2); GB/T 9711.1; 
Grade: Gr. B, X42, X46, X52, X60, X65, X70, X80; Q235B; Gr. C; 
Seam: SAW, SSAW; HSAW 

Inspection: Hydraulic Testing, Eddy Current, Infrared Test; 
The thired party, SGS, BV, can be accepted. 

Certificate: Certificate: API 5L, API 5CT. ISO 9001; CE and so on.
Resistant to chemical corrosion, resistance to cathodic disbondment resistance, mechanical damage to properties.

HDPE pipe

High-density polyethylene jacket tube is widely used in oil pipelines, gas pipelines, urban heating pipes, water pipes, electricity and other corrosion engineering, product quality and service by the users of a good level.

High Density Polyethylene (HDPE) Jacketed System is designed for piping systems above or below ground suitable for inside or outside applications. High quality polyurethane foam insulation combined with a durable watertight jacket supplied in 20' or 40' lengths, means an economical, high-quality system.

High density polyethylene jacket corrosion structure: the outer surface of pipe wrapped in high-density polyethylene material, with a high mechanical strength and excellent corrosion resistance, can protect the steel in the transportation, installation and use of the process to avoid external factors the damage. Manufacture of stent should be added antioxidants, UV stabilizers and carbon black, etc. Polyethylene jacket tube easy to aging, such as open storage tarpaulin and other items appropriate to cover, dumps should stay away from high heat and fire, anti-corrosion steel pipe made after the ban exposure, sudden cold, or polyethylene jacket tube easy to crack, the impact product performance and service life. 

Calculated as follows:
OD ≤ 400mm, the upper and lower deviation, and = 0.1 × of the nominal wall thickness of +0.2
Diameter ≥ 400mm, the upper and lower deviation = 0.15 × the sum of the nominal wall thickness of +0.2

3PE Coating Steel Pipe
Coating Material : Epoxy Powder, Adhesion, Polyethylene Or Polypropylene, Cement Inside 
Standard: API 5L (PSL1, PSL2); GB/T 9711.1; 
Grade: Gr. B, X42, X46, X52, X60, X65, X70, X80; Q235B; Gr. C; 
Seam: SAW, SSAW; HSAW 

Inspection: Hydraulic Testing, Eddy Current, Infrared Test; 
The thired party, SGS, BV, can be accepted. 

Certificate: Certificate: API 5L, API 5CT. ISO 9001; CE and so on.
Resistant to chemical corrosion, resistance to cathodic disbondment resistance, mechanical damage to properties.

Single-layer anti-corrosion epoxy powder pipe

The coating has a coating has the advantages of simple operation, no pollution, coating resistance and bending resistance, high temperature and other characteristics, has been applied widely overseas.

Melting guitar epoxy powder coating

It is nearly 30 years ago to develop a new type of coating, using electrostatic spray coating of epoxy powder coating, the first film. The coating is coated with easy to operate, pollution-free, coating and anti-bending performance impact, and of high temperature, in foreign countries has been widely used.

 

Coating Material : Epoxy Powder, Adhesion, Polyethylene Or Polypropylene, Cement Inside 
Standard: API 5L (PSL1, PSL2); GB/T 9711.1; 
Grade: Gr. B, X42, X46, X52, X60, X65, X70, X80; Q235B; Gr. C; 
Seam: SAW, SSAW; HSAW 

Outside Diameter: 219-2020 MM 
Wall Thickness: 5-25MM 
Length: 4/6/12/18/21 meters 
End: Plain or Bevelled 
Surface; Bare or Black Painted or Anti-corrosion, such as 3LPE; 

Inspection: Hydraulic Testing, Eddy Current, Infrared Test; 
The thired party, SGS, BV, can be accepted. 

Certificate: Certificate: API 5L, API 5CT. ISO 9001; CE and so on.
Resistant to chemical corrosion, resistance to cathodic disbondment resistance, mechanical damage to properties.

Single-layer epoxy powder (FBE) corrosion Flow Chart

2PE Coating Steel Pipe

The 2PE Coating Steel Pipe enjoys good impact resistance, abrasive resistance, shock resistance, acid resistance, high quality and long service life.

Our 2PE coating steel pipe can be used in transferring natural gas, crude oil and refined oil product over long distance. Our 2 PE coating steel pipe can be also used in urban fuel gas piping system, storage tanks and groove piping system, protecting pipe in electricity and communication industries and water piping systems.

PE anti-corrosion pipe three-tier structure:

the first layer adhesive (AD), the second layer of polyethylene (PE), two kinds of integration.
Outside Diameter: 219-2020 MM 
Wall Thickness: 5-25MM 
Length: 4/6/12/18/21 meters 
End: Plain or Bevelled 
Surface; Bare or Black Painted or Anti-corrosion, such as 3LPE; 

Inspection: Hydraulic Testing, Eddy Current, Infrared Test; 
The thired party, SGS, BV, can be accepted. 

Certificate: Certificate: API 5L, API 5CT. ISO 9001; CE and so on.

Resistant to chemical corrosion, resistance to cathodic disbondment resistance, mechanical damage to properties.

2PE steel pipe

The 2PE Coating Steel Pipe enjoys good impact resistance, abrasive resistance, shock resistance, acid resistance, high quality and long service life.

Our 2PE coating steel pipe can be used in transferring natural gas, crude oil and refined oil product over long distance. Our 2 PE coating steel pipe can be also used in urban fuel gas piping system, storage tanks and groove piping system, protecting pipe in electricity and communication industries and water piping systems.

PE anti-corrosion pipe three-tier structure:

the first layer adhesive (AD), the second layer of polyethylene (PE), two kinds of integration.
Outside Diameter: 219-2020 MM 
Wall Thickness: 5-25MM 
Length: 4/6/12/18/21 meters 
End: Plain or Bevelled 
Surface; Bare or Black Painted or Anti-corrosion, such as 3LPE; 

Inspection: Hydraulic Testing, Eddy Current, Infrared Test; 
The thired party, SGS, BV, can be accepted. 

Certificate: Certificate: API 5L, API 5CT. ISO 9001; CE and so on.

Resistant to chemical corrosion, resistance to cathodic disbondment resistance, mechanical damage to properties.

3PE steel pipe

The 3PE Coating Steel Pipe enjoys good impact resistance, abrasive resistance, shock resistance, acid resistance, high quality and long service life.

Our 3PE coating steel pipe can be used in transferring natural gas, crude oil and refined oil product over long distance. Our 3 PE coating steel pipe can be also used in urban fuel gas piping system, storage tanks and groove piping system, protecting pipe in electricity and communication industries and water piping systems.

PE anti-corrosion pipe three-tier structure:

the first layer of epoxy powder (FBE> 100um), the second adhesive (AD) 170-250um, the third layer of polyethylene (PE) 2.5-3.7mm.
Three of the integration, and steel pipe with a good solid coating. Diameter of Φ159-Φ1220.

IPN8710 Water pipe inner wall

When the corrosion of steel in more types of media, such as acids, alkalis, salts, oxidants and water vapor, etc., the coating must be chemically inert, acid salt corrosion, the coating should be compact structure, water permeability, adhesion, tough fullness. Such cases for IPN8710 corrosion.

water supply pipes within the wider variety of corrosive media, there is acid, alkali, salt, oxidizing and water vapor, etc., coatings must be chemically inert, acid and alkali salt corrosion, the coating should be compact and water permeability, strong adhesion , tenacity fullness.

IPN8710 primer: from polyurethane polyethylene, modified epoxy resin, non-toxic anti-rust pigment, filler, additives such as composition, room temperature curing to form interpenetrating networks, film structure, dense, acid, alkali, salt, rust-proof performance, strong adhesion.

IPN8710 finish: from epoxy, rubber and resin-modified, non-toxic anti-rust pigment, filler, additives etc.. Excellent chemical resistance, non-toxic, anti-microbial erosion.

Uses: IPN8710 primer for water supply pipeline wall corrosion grounding coating;
Diameter range is Φ325 - Φ2220
IPN8710 finish for water supply pipeline wall corrosion finish. 

Anti-corrosion steel pipe

Anti-corrosion steel pipe is processed through the preservation process, which can effectively prevent or slow down the process in the transport and use of chemical or electrochemical corrosion reaction of steel pipe.

Sunny Steel Internal and External Anti-corrosion steel pipe services: Anti-corrosion steel pipe in the country is mainly used for petroleum, chemical, gas, heat, sewage treatment, water, bridges, steel pipes and other engineering fields.anti-corrosion steel pipe is divided into the following categories:

IPN8710 Water pipe inner wall
When the corrosion of steel in more types of media, such as acids, alkalis, salts, oxidants and water vapor, etc., the coating must be chemically inert, acid salt corrosion, the coating should be compact structure, water permeability, adhesion, tough fullness. Such cases for IPN8710 corrosion.
IPN8710 anti-corrosion primer: from polyurethane, polyethylene, modified epoxy resin, non-toxic anti-corrosion pigments, additives and other components, room temperature curing to form interpenetrating networks, dense coating structure, acid, alkali, salt, rust performance, strong adhesion for water supply pipeline wall corrosion primer paint. IPN8710 anti-corrosion finish: from the epoxy, rubber, resin-modified, non-toxic anti-corrosion pigments, additives and other components. Excellent chemical resistance, non-toxic, anti-microbial corrosion, corrosion protection for water supply pipeline wall finish.

FBE epoxy powder corrosion
FBE epoxy powder anti-corrosion structure: electrostatic spraying the surface of the steel epoxy powder coating, a film. The coating has a coating operation is simple, clean, coating impact resistance and bending properties, temperature resistance advantages.

3PE / 2PE steel pipe 
2PE/3PE corrosion structure: the surface of the steel and epoxy powder electrostatic spraying adhesive side wound, lateral wound polyethylene coating, combined with the excellent performance of the three, thus significantly improving the overall quality of pipeline corrosion. Resistant to chemical corrosion, resistance to cathodic disbondment resistance, mechanical damage to properties.

Coal tar epoxy anticorrosive
Coal tar epoxy anticorrosive structure: from the epoxy resin + filler made of coal tar pitch + anti-corrosion coatings on steel surface coated with glass cloth to strengthen the formation of a coating, commonly used in the pipe wall corrosion. Thickness of 0.5 ~ 1.0mm.

High-density polyethylene jacket corrosion
High density polyethylene jacket corrosion structure: the outer surface of pipe wrapped in high-density polyethylene material, with a high mechanical strength and excellent corrosion resistance, can protect the steel in the transportation, installation and use of the process to avoid external factors the damage. Manufacture of stent should be added antioxidants, UV stabilizers and carbon black, etc. Polyethylene jacket tube easy to aging, such as open storage tarpaulin and other items appropriate to cover, dumps should stay away from high heat and fire, anti-corrosion steel pipe made after the ban exposure, sudden cold, or polyethylene jacket tube easy to crack, the impact product performance and service life.

Spiral submerged-arc welding pipes

Spiral submerged arc welding(SSAW) is its forward direction and forming tube centerline hose reel molding angle (adjustable), side molding edge welding and weld them into a spiral.

We are manufacturer of SSAW pipes and supply high quality SSAW pipes in both large and small quantities worldwide and offer you the best prices in the market. 

We have a team of experienced professionals with years of experience in manufacturing.

HDPE pipe High-density polyethylene jacket tube is widely used in oil pipelines, gas pipelines, urban heating pipes, water pipes, electricity and other corrosion engineering, product quality and service by the users of a good level. 3PP Anti-corrosion pipe Three-layer PE/PP coating is characterized by excellent corrosion-proof performance,insulatibity,relatively long service life and mechanical damage resistance. Anti-corrosion steel pipe Anti-corrosion steel pipe is processed through the preservation process... Anti layer structure Technological process Spiral Submerged-arc Welded steel pipe technological process Quality Assurance Spiral Submerged-arc Welded Quality Assurance

DSAW pipes Double Submerged Arc Welded (DSAW) steel pipe is available in straight and spiral welded formats and used in a variety of applications. SAW pipes SAW is normally operated in the automatic or mechanized mode, however, semi-automatic (hand-held) SAW guns with pressurized or gravity flux feed delivery are available. 3PE steel pipe The 3PE Coating Steel Pipe enjoys good impact resistance, abrasive resistance, shock resistance, acid resistance, high quality and long service life. Pipe cement mortar lining Cement mortar lining can ensure a safe and abundant water supply for your water customers for many years to come. Success Stories Widely preferred longer lengths up to 18,5 m. considerably decreases the cost of pipeline construction resulting in less number of girth welds compared to shorter pipe lengths.

SSAW pipe is made of hot rolled coiled steel by automatic submerged arc weld under normal atmospheric temperature. All the pipes are produced according to API Spec 5L, GB/T9711.1, GB/T9711.2, ASTM A252-89 standard. These pipes mainly used in petroleum and natural gas industry to transport flammable and non-flammable liquid and steel construction.

Size:

(O.D×Wall Thickness)mm×Length(mm)

219-3200mm×5-30mm x 12000mm+500mm

In addition to above specification, the pipes can be produced according to customer’s requirements.

Execute Standard:

ASTM A252-89 WELDE AND SEAMLESS STEEL PIPE PILES 

API SPEC 5L Specification for Line Pipe

GB/T9711.1 Petroleum and natural gas industries—Steel pipe for pipelines—Technical delivery conditions

SY/T5037 Spiral submerged arc welded pipe for low pressure liquid transportation

Material:

Q235-Q345,　L175-L485,　SS400,　16Mn,　L290-L360
or according to the customer's requirements.

Mainly usage:

Spiral welded steel pipes are widely used in Oil, Natural Gas, Water and other flammable & nonflammable liquid conveyance and distribution pipelines, steel structures for construction and other general purposes by means of their wide size range.

Mill Test Certificate: EN 10204/3.1B 
Third party inspection: SGS, BV, Lloyds etc.

---

Pipe End: 

square ends (straight cut, saw cut, and torch cut). or beveled for welding, beveled, 

Surface:

Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy,  Fusion Bond Epoxy, 3-layers PE)

Packing: 

Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps.

Test: 

Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield, strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.

Mill Test Certificate: EN 10204/3.1B 
Third party inspection: SGS, BV, Lloyds etc.

Welcome to order more. 

We have a team of experienced professionals with years of experience in manufacturing.

Note:
This inventory is part of the inventory, demand and other models in stock or order materials, please contact us.

SSAW ASTM A252 pipes

ASTM A252 standard covers nominal wall cylindrical steel pipe piles in which the steel cylinder acts as a permanent load-carrying member or as a shell to form cast-in-place concrete piles.

Each welded pile shall be made by seamless, electric resistance welding, flash welding or fusion welding with longitudinal, helical-butt, or helical-lap seams. This specification also deals with material tensile requirements, minimum elongation values and common size and weights per unit length values.

SSAW pipe is made of hot rolled coiled steel by automatic submerged arc weld under normal atmospheric temperature. All the pipes are produced according to API Spec 5L, GB/T9711.1, GB/T9711.2, ASTM A252-89 standard. These pipes mainly used in petroleum and natural gas industry to transport flammable and non-flammable liquid and steel construction.

• O.D.:219-3040mm W.T.:5-30mm
• Steel Grade: ASTM A252 Grade1, Grade2, Grade3
• Standard pipes and tubes for piles, columns, structural and other mechanical uses.
• Piling pipes for low-pressure, high-density purposes

Quality Assurance -- Quality Control

+ Outside Diameter Control
Hydrostatic Testing
+ X-Ray Testing Online

Mill Test Certificate: EN 10204/3.1B 
Third party inspection: SGS, BV, Lloyds etc.

SAW pipes

Submerged arc welding (SAW) is a common arc welding process. SAW is normally operated in the automatic or mechanized mode, however, semi-automatic (hand-held) SAW guns with pressurized or gravity flux feed delivery are available.

• Spiral Submerged-arc Welded Quality Assurance
• ASTM A252 SSAW pipes
• ASTM A252-89 Weldedd and seamless pipe piles
• Spiral Submerged-arc Welded steel pipe Success Stories

The process is normally limited to the flat or horizontal-fillet welding positions (although horizontal groove position welds have been done with a special arrangement to support the flux).

SAW pipe is made of hot rolled coiled steel by automatic submerged arc weld under normal atmospheric temperature. All the pipes are produced according to API Spec 5L, GB/T9711.1, GB/T9711.2, ASTM A252-89 standard. These pipes mainly used in petroleum and natural gas industry to transport flammable and non-flammable liquid and steel construction.

Size:

• (O.D×Wall Thickness)mm×Length(mm)
• 219-3200mm×5-30mm x 12000mm+500mm
• In addition to above specification, the pipes can be produced according to customer’s requirements.

Execute Standard:

• ASTM A252-89 WELDE AND SEAMLESS STEEL PIPE PILES  
• API SPEC 5L Specification for Line Pipe
• GB/T9711.1 Petroleum and natural gas industries—Steel pipe for pipelines—Technical delivery conditions
• SY/T5037 Spiral submerged arc welded pipe for low pressure liquid transportation

Material:

Q235-Q345,　L175-L485,　SS400,　16Mn,　L290-L360

or according to the customer's requirements.

Mainly usage:

Spiral welded steel pipes are widely used in Oil, Natural Gas, Water and other flammable & nonflammable liquid conveyance and distribution pipelines, steel structures for construction and other general purposes by means of their wide size range.

• Pipe Coating: HDPE/ 3PE/ 3PP/ Pipe cement mortar lining
• Mill Test Certificate: EN 10204/3.1B 
• Third party inspection: SGS, BV, Lloyds etc.

Spiral Submerged-arc Welded Quality Assurance

Excellent Equipment:

There are nine modernized product lines in our company with the yield capacity of 1000 thousands tons of B-X80 steel pipe of φ219-φ3200mm, WT5-30mm.

Ultrasonic Inspecting SSAW pipe mills High Frequency Welding Normalizing

Lincoln Welder Welding Supercoil Accumulator Forming Machine Airport

Welding of hot rolled steel coils takes spiral form after passing through preforming and forming rolls. Excellent exterior weld quality at high production speeds is provided by double submerged arc welding process. Manufactured pipes are cut to the desired lengths at the exit of the pipe machine. Pipe ends are beveled by means of carbide machining for accurate on-site welding. 

After the pipe is conveyed to hydrostatic testing and off-line ultrasonic testing and/or real time X-ray inspection, the pipe will be subject to final inspection for the compliance to customer requirements. 

Starting from incoming control up to the final inspection stage; entire process is monitored and supported by computerized system. Traceability is achieved by input controls and barcodes through entire production lines.