Carbon Steel Seamless Pipe

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The carbon steel seamless pipe is produced by rolling, drawing, squeezing, and punching. As its name suggests, it has no seams on the surface. Compared with solid steel, steel pipe is lighter under the same compressive strength and tensile strength. Therefore, it is widely used in oil, chemical, shipping, automobile, aviation, energy, construction, military, and other industries.

Common technical standards: ASTM A106 Grade B, ASTM A53 Grade B, API 5L Grade BProduct specification: Φ(17-720)mm×(2-70)mm

The ASTM A106 Grade B and ASTM A53 Grade B are the most commonly used American standards for carbon steel seamless pipe. They are applicable to pipes for high temperature services as well as pipes operating below 350℃ for pressure piping, pipeline and general purposes. Products conforming to ASTM A106 are processed by cold drawing or hot rolling.

ASTM A53

Standard

Grade

Chemical Composition

Mechanical Properties

Tensile Strength

Yield Strength

Elongation

ASTM A53

≤ 0.25

≤ 0.95

≤ 0.05

≤ 0.06

≤ 0.40

≤ 0.15

≤ 0.40

≤ 0.08

≥ 330

≥ 205

≥ 29.5

≤ 0.30

≤ 1.2

≤ 0.05

≤ 0.06

≤ 0.40

≤ 0.15

≤ 0.40

≤ 0.08

≥ 415

≥ 240

≥ 29.5

ASTM A106

Standard

Grade

Chemical Composition

Mechanical Properties

Tensile Strength

Yield Strength

Elongation

ASTM A106

≤ 0.30

≥ 0.10

0.29- 1.06

≤ 0.035

≤ 0.40

≤ 0.15

≤ 0.40

≤ 0.08

≥ 415

≥ 240

≥ 30

≤ 0.35

≥ 0.10

0.29- 1.06

≤ 0.035

≤ 0.40

≤ 0.15

≤ 0.40

≤ 0.08

≥ 485

≥ 275

≥ 30

API 5L PSL1

Grade and Category	Chemical Composition				Mechanical Properties
	C (Max.)	Mn (Max.)	P (Max.)	S (Max.)	Tensile Strength		Yield Strength
	C (Max.)	Mn (Max.)	P (Max.)	S (Max.)	PSI	MPa	PSI	MPa
A	0.22	0.90	0.030	0.030	48000	331	30000	207
B	0.28	1.20	0.030	0.030	60000	414	35000	241
X42	0.28	1.30	0.030	0.030	60000	414	42000	290
X46	0.28	1.40	0.030	0.030	63000	434	46000	317
X52	0.28	1.40	0.030	0.030	66000	455	52000	359
X56	0.28	1.40	0.030	0.030	71000	490	56000	386
X60	0.28	1.40	0.030	0.030	75000	517	60000	414
X65	0.28	1.40	0.030	0.030	77000	531	65000	448
X70	0.28	1.40	0.030	0.030	82000	565	70000	483

API 5L is a standard for line pipe which is used to transport oil, gas, and water extracted from the ground to oil and gas industry enterprises, including seamless type and welded type. Its end is plain, threaded, or belled, and the connection mode is correspondingly welding, coupling, and socket connection. Steel grade ranges from X42 to X70. There are onshore pipeline and submarine pipeline in variety.

API 5L PSL2

Grade and Category	Chemical Composition				Mechanical Properties				Mechanical Properties
	C (Max.)	Mn (Max.)	P (Max.)	S (Max.)	Tensile Strength		Tensile Strength		Yield Strength		Yield Strength
	C (Max.)	Mn (Max.)	P (Max.)	S (Max.)	PSI	MPa	PSI	MPa	PSI	MPa	PSI	MPa
B	0.24	1.20	0.025	0.015	60000	414	11000	758	35000	241	65000	758
X42	0.24	1.30	0.025	0.015	60000	414	11000	758	42000	290	72000	758
X46	0.24	1.40	0.025	0.015	63000	434	11000	758	46000	317	76000	758
X52	0.24	1.40	0.025	0.015	66000	455	11000	758	52000	359	77000	758
X56	0.24	1.40	0.025	0.015	71000	490	11000	758	56000	386	79000	758
X60	0.24	1.40	0.025	0.015	75000	517	11000	758	60000	414	82000	758
X65	0.24	1.40	0.025	0.015	77000	531	11000	758	65000	448	87000	758
X70	0.24	1.40	0.025	0.015	82000	565	11000	758	70000	483	90000	758

NACE MR0175 is a standard for materials for use in H2S-containing environments in oil and gas production. It is internationally regulated that when the partial pressure of H2S reaches 300Pa, the pipe used should be resistant to acid corrosion. Pipelines used under this condition have special requirements on the carbon content, sulfur content, phosphorus content, calcium sulfur ratio, and flaw detection. Hydrogen induced cracking test and sulfide stress cracking test are required.

We are one of the few manufacturers in China that are able to provide line pipes conforming to both API 5L PSL2 and NACE MR0175. We accept testing from the customer or the third-party testing company.

In addition to the aforementioned carbon steel seamless pipes, our company is also able to produce products meeting the following American standards.

1. ASTM A179 Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes
Outer diameter range: 3.2-76.2mm

2. ASTM A192 Standard Specification for Seamless Carbon Steel Boiler Tubes for High-Pressure Service
Nominal diameter: 12.7-177.8mm
Thickness: 2.2-25.4mm

3. ASTM A210/A210M-2003 Standard Specification for Seamless Medium-Carbon Steel Boiler and Superheater Tubes

4. ASTM A178/A178M-2002 Standard Specification for Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes
Outer diameter: 12.7-127mm
Wall thickness: 0.9-9.1mm

Related Names
Seamless Steel Pipe Manufacturer | Black Steel Tubes | Metal Tubing Supply

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