ASTM A53 Standard Specifications

ASTM A53 Standard Spec. for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

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.

A53 pipe comes in three types (F, E, S) and two grades (A, B).

A53 Type F is manufactured with a furnace butt weld or may have a continuous weld (Grade A only)

A53 Type E has an electric resistance weld (Grades A and B)

A53 Type S is a seamless pipe and found in Grades A and B)

A53 Grade B Seamless is our most polar product under this specification and A53 pipe is commonly dual certified to A106 B Seamless pipe.

Materials and Manufacture

The steel for both seamless and welded pipe shall be made by one or more of the following processes: open-hearth, electric furnace, or basic-oxygen. The weld seam of electric-resistance welded pipe in Grade B shall be heat treated after welding.
Applications: heat exchangers, condensers, heat transfer equipment and similar pipes.

Chemical Properties %

	Grade	C, max	Mn, max	P, max	S, max	Cu*, max	Ni*, max	Cr*, max	Mo*, max	V*, max
Type S(Seamless)	A	0.25	0.95	0.05	0.05	0.40	0.40	0.40	0.15	0.08
	B	0.30	1.20	0.05	0.05	0.40	0.40	0.40	0.15	0.08
Type E (Electric-resistance Welded)	A	0.25	0.95	0.05	0.05	0.40	0.40	0.40	0.15	0.08
	B	0.30	1.20	0.05	0.05	0.40	0.40	0.40	0.15	0.08
Type F (Furnace-welded)	A	0.30	1.20	0.05	0.05	0.40	0.40	0.40	0.15	0.08

Note:

• DN — Nominal Diameter
• NPS —Nominal Pipe Size

Keywords:

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The table below indicates maximum working pressure of carbon steel pipes manufactured according ASME/ANSI B 36.10 and ASTM A53 B:

Carbon Steel Pipes – Working Pressure
Nominal Size (inches)	Pipe Outside Diameter OD (inches)	Schedule Number or weight	Wall Thickness - t - (inches)	Inside Diameter - d - (inches)	Working Pressure ASTM A53 B to400°F
					Manu- facturing Process	Joint Type	psig
1/4	0.540	40ST	0.088	0.364	CW1)	T	188
		80XS	0.119	0.302	CW	T	871
3/8	0.675	40ST	0.091	0.493	CW	T	203
		80XS	0.126	0.423	CW	T	820
1/2	0.840	40ST	0.109	0.622	CW	T	214
		80XS	0.147	0.546	CW	T	753
3/4	1.050	40ST	0.113	0.824	CW	T	217
		80XS	0.154	0.742	CW	T	681
1	1.315	40ST	0.133	1.049	CW	T	226
		80XS	0.179	0.957	CW	T	642
1 1/4	1.660	40ST	0.140	1.380	CW	T	229
		80XS	0.191	1.278	CW	T	594
1 1/2	1.900	40ST	0.145	1.610	CW	T	231
		80XS	0.200	1.500	CW	T	576
2	2.375	40ST	0.154	2.067	CW	T	230
		80XS	0.218	1.939	CW	T	551
2 1/2	2.875	40ST	0.203	2.469	CW	W	533
		80XS	0.276	2.323	CW	W	835
3	3.500	40ST	0.216	3.068	CW	W	482
		80XS	0.300	2.900	CW	W	767
4	4.500	40ST	0.237	4.026	CW	W	430
		80XS	0.337	3.826	CW	W	695
6	6.625	40ST	0.280	6.065	ERW2	W	696
		80XS	0.432	5.761	ERW	W	1209
8	8.625	30	0.277	8.071	ERW	W	526
		40ST	0.322	7.981	ERW	W	643
		80XS	0.500	7.625	ERW	W	1106
10	10.75	30	0.307	10.136	ERW	W	485
		40ST	0.365	10.020	ERW	W	606
		XS	0.500	9.750	ERW	W	887
		80	0.593	9.564	ERW	W	1081
12	12.75	30	0.330	12.090	ERW	W	449
		ST	0.375	12.000	ERW	W	528
		40	0.406	11.938	ERW	W	583
		XS	0.500	11.750	ERW	W	748
		80	0.687	11.376	ERW	W	1076
14	14.00	30ST	0.375	13.250	ERW	W	481
		40	0.437	13.126	ERW	W	580
		XS	0.500	13.000	ERW	W	681
		80	0.750	12.500	ERW	W	1081
16	16.00	30ST	0.375	15.250	ERW	W	421
		40XS	0.500	15.000	ERW	W	596
18	18.00	ST	0.375	17.250	ERW	W	374
		30	0.437	17.126	ERW	W	451
		XS	0.500	17.000	ERW	W	530
		40	0.562	16.876	ERW	W	607
20	20.00	20ST	0.375	19.250	ERW	W	337
		30XS	0.500	19.000	ERW	W	477
		40	0.593	18.814	ERW	W	581

1) CW – continuous weld – a method of producing small diameter pipe (1/2-4″)
2) ERW – electric resistance weld – most common form of manufacture for pipe in sizes from 2 3/8-22″ OD

• 1 in (inch) = 25.4 mm
• 1 psi (lb/in2) = 6,894.8 Pa (N/m2) = 6.895×10-2 bar

Packing: plastic pipe cap, plastic bag and steel strips bundled
Applications: petroleum, chemical, power, gas, metallurgy, shipbuilding, construction and more