ASTM A53 Pipe Specifications

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ASTM A53 Steel Pipe

ASTM A53 steel pipes are designed for mechanical and pressure applications. They are well-suited for ordinary uses in steam, water, gas, and airlines.

It suits welding and forming operations like coiling, bending, and flagging. Our pipes are crafted to meet specific qualifications.
Whether you need Seamless or Welded, Black or Hot-Dipped Galvanized pipes.

We offer the perfect solution for your coiling, bending, flanging, and other specialized needs.

Trust our quality. We ensure the pipes are good for welding and meet industry standards.

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Procedure: ERW, SMLS
Dimensions: 10.3mm – 660.4mm, 1/8″ – 26″, DN6 – DN650

Thickness: 1.65mm – 25.4mm, SCH 5S – SCH XXS

Unit Length: Single Random 4.88 – 6.71mtrs, Double Random — 6.71 – 10.67mtrs”

Steel Grade: ASTM A53 GRA, ASTM A53 GRB
Surface Coating: Varnishing, Oiling, Hot Dip Galvanizing, FBE, 2PP, 3PP, 2PE, 3PE

End Type: Square cut, Plain, Bevelled, Threaded, Grooved
Joint Method: Fitting, Flange, Coupling, Clamp, Pipe Shoulder, Welding
Pipe Machining: Welding, Bending, Hole Drilling, Punching, Swaging, Tapering, Flaring, Expanding

ERW Pipe manufacturer_Line Pipe_HFW Pipe

Why choose us?

Our ASTM A53 steel pipes come with a comprehensive specification that includes dimensions, production procedures, steel grades, surface coatings, end types, joint methods, and machining services.

We offer pipes ranging from NPS 1/8 to NPS 26, processed through open-hearth, basic-oxygen, or electric-furnace methods.

With options in carbon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum, and vanadium, we provide seamless or welding processes, ensuring adherence to mechanical properties and hydrostatic tests.

Choose UNIASEN for precision and quality, tailored to your specific needs.

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ASTM A53 Pipe Dimensions

Our pipes have a thin wall and a specific diameter. They are designed for coiling, bending, and flanging. Our expert team is here to help you select the perfect dimensions for your unique needs.

Steel Pipe Dimensions Chart ANSI B36. 10 & 36.19
Nominal Pipe Size		Outside Diameter (mm)	Nominal Wall Thickness Schedule
NPS	DN	OD	SCH 5	SCH 10	SCH 20	SCH 30	SCH STD	SCH 40	SCH 60	SCH XS	SCH 80	SCH 100	SCH 120	SCH 140	SCH 160	SCH XXS
1/8	6	10.3	–	1.24	–	1.45	1.73	1.73	–	2.41	2.41	–	–	–	–	–
1/4	8	13.7	–	1.65	–	1.85	2.24	2.24	–	3.02	3.02	–	–	–	–	–
3/8	10	17.1	–	1.65	–	1.85	2.31	2.31	–	3.20	3.20	–	–	–	–	–
1/2	15	21.3	1.65	2.11	–	2.41	2.77	2.77	–	3.73	3.73	–	–	–	4.78	7.47
3/4	20	26.7	1.65	2.11	–	2.41	2.87	2.87	–	3.91	3.91	–	–	–	5.56	7.82
1	25	33.4	1.65	2.77	–	2.9	3.38	3.38	–	4.55	4.55	–	–	–	6.35	9.09
1 1/4	32	42.2	1.65	2.77	–	2.97	3.56	3.56	–	4.85	4.85	–	–	–	6.35	9.70
1 1/2	40	48.3	1.65	2.77	–	3.18	3.68	3.68	–	5.08	5.08	–	–	–	7.14	10.15
2	50	60.3	1.65	2.77	–	3.18	3.91	3.91	–	5.54	5.54	–	–	–	8.74	11.07
2 1/2	65	73	2.11	3.05	–	4.78	5.16	5.16	–	7.01	7.01	–	–	–	9.53	14.02
3	80	88.9	2.11	3.05	–	4.78	5.49	5.49	–	7.62	7.62	–	–	–	11.13	15.24
3 1/2	90	101.6	2.11	3.05	–	4.78	5.74	5.74	–	8.08	8.08	–	–	–	–	–
4	100	114.3	2.11	3.05	–	4.78	6.02	6.02	–	8.56	8.56	–	11.13	–	13.49	17.12
5	125	141.3	2.77	3.40	–	–	6.55	6.55	–	9.53	9.53	–	12.70	–	15.88	19.05
6	150	168.3	2.77	3.40	–	–	7.11	7.11	–	10.97	10.97	–	14.27	–	18.26	21.95
8	200	219.1	2.77	3.76	6.35	7.04	8.18	8.18	10.31	12.70	12.70	15.09	18.26	20.62	23.01	22.23
10	250	273.0	3.40	4.19	6.35	7.80	9.27	9.27	12.70	12.70	15.09	18.26	21.44	25.40	28.58	25.40
12	300	323.8	3.96	4.57	6.35	8.38	9.53	10.31	14.27	12.70	17.48	21.44	25.40	28.58	33.32	25.40
14	350	355.6	3.96	6.35	7.92	9.53	9.53	11.13	15.09	12.70	19.05	23.83	27.79	31.75	35.71	–
16	400	406.4	4.19	6.35	7.92	9.53	9.53	12.70	16.66	12.70	21.44	26.19	30.96	36.53	40.49	–
18	450	457	4.19	6.35	7.92	11.13	9.53	14.27	19.05	12.70	23.83	29.36	34.93	39.67	45.24	–
20	500	508	4.78	6.35	9.53	12.70	9.53	15.09	20.62	12.70	26.19	32.54	38.10	44.45	50.01	–
22	550	559	4.78	6.35	9.53	12.70	9.53	–	22.23	12.70	28.58	34.93	41.28	47.63	53.98	–
24	600	610	5.54	6.35	9.53	14.27	9.53	17.48	24.61	12.70	30.96	38.89	46.02	52.37	59.54	–
26	650	660	–	7.92	12.70	–	9.53	–	–	12.70	–	–	–	–	–	–

Chemical Requirement of ASTM A53 Pipe

A53/A53M − Chemical Requirements
Composition, max, %
Grade	Carbon	Manganese	Phosphorus	Sulfur	CopperA	NickelA	ChromiumA	MolybdenumA	VanadiumA
Type S (seamless pipe)
Grade A Grade B	0.25B 0.30C	0.95 1.20	0.05 0.05	0.045 0.045	0.40 0.40	0.40 0.40	0.40 0.40	0.15 0.15	0.08 0.08
Type E (electric-resistance-welded)
Grade A Grade B	0.25B 0.30C	0.95 1.20	0.05 0.05	0.045 0.045	0.40 0.40	0.40 0.40	0.40 0.40	0.15 0.15	0.08 0.08
Type F (furnace-welded pipe)
Grades A and B	0.30B	1.2	0.05	0.045	0.4	0.4	0.4	0.15	0.08
A The total composition for these ﬁve elements shall not exceed 1.00 %.
B For each reduction of 0.01 % below the speciﬁed carbon maximum, an increase of 0.06 % of manganese above the speciﬁed maximum will be permitted up to a maximum of 1.35 %.
C For each reduction of 0.01 % below the speciﬁed carbon maximum, an increase of 0.06 % of manganese above the speciﬁed maximum will be permitted up to a maximum of 1.65 %.

Mechanical Requirement

Tensile Requirements
Mechanical Properties	Grade A	Grade B
Tensile strength, min, psi [MPa]	48 000 [330]	60 000 [415]
Yield strength, min, psi [MPa]	30 000 [205]	35 000 [240]
Elongation in 2 in. or 50 mm	A, B	A, B
The minimum elongation in 2 in. [50 mm] shall be determined by the following equation: e = 625000 [ 1940] A 0.2/U 0.9 Where: e = minimum elongation in 2 in. or 50 mm in percent, rounded to the nearest percent, A = the lesser of 0.75 in.2 [500 mm2] and the cross-sectional area of the tension test specimen, calculated using the speciﬁed outside diameter of the pipe, or the nominal width of the tension test specimen and the speciﬁed wall thickness of the pipe, with the calculated value rounded to the nearest 0.01 in.2 [1 mm2], and U = speciﬁed minimum tensile strength, psi [MPa]. B See Table X4.1 or Table X4.2, whichever is applicable, for the minimum elongation values that are required for various combinations of tension test specimen size and speciﬁed minimum tensile strength.

Steel Grades

UNIASEN offers ASTM A53 steel pipes in two distinct steel grades: Grade A and Grade B.You may require Furnace-butt welded continuous Welded Pipe (Type F), Electric Resistance Welded Pipe (Type E), or Seamless Pipe (Type S). Our steel grades are made to meet your needs.We use raw steel from an open-hearth furnace, electric furnace, or basic-oxygen process to ensure quality and consistency in every grade.Trust in our expertise to provide the right grade for your project.

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