Grades: GR.B, X42, X46, X52, X56, X60, X65, X70 X80

Sizes:

Out Diameter Range: 1/2 inch---24 inch

Wall Thickness Range: SCH10,SCH20,SCH40,SCH STD,SCH80

Length: 1m---18m

Coating: 3PE Coating, 3PP Coating, FBE Coating;Epoxy Coating, Special Painting

Mechanical properties:

- Impact test under forced conditions using the J-B method (extra test required for the low-temperature environment below -20℃).

- Hardness testing covers the base metal, weld seam and heat affected zone ; full pipe body testing is required for seamless pipes).

- Grain size and inclusions must meet the requirements for ductile fracture propagation (especially for gas transmission pipelines).

Production method: Seamless pipes are mainly produced by hot rolling and can be cold expanded in diameter; welded pipes require high-precision welding techniques (such as SAWL/SAWH).

Delivery condition:

- Q (quenching + tempering): Enhance strength and toughness (such as X70Q).

- M (hot mechanical rolling): Optimize comprehensive performance, suitable for deep-sea or extremely cold environments.

Applications:

- High-pressure gas transmission trunk lines (with working pressure ≥ 15 MPa).

Polar or deep-sea oil and gas pipelines (able to withstand -45℃ low temperature and high salt corrosion).

- Acidic oil and gas fields containing hydrogen sulfide.

- High-pressure urban gas distribution networks (taking into account both safety and economy).

Chemical Composition & Mechanical Property:

Standard	Grade	Chemical Composition(%)				Tensile STrength(min)	Yield Strength(min)
Standard	Grade	C Mn P S				Mpa	Mpa
API 5L PSL1 (SMLS)	A	0.22	0.90	0.030	0.030	335	210
	B	0.28	1.20	0.030	0.030	415	245
	X42	0.28	1.30	0.030	0.030	415	290
	X46	0.28	1.40	0.030	0.030	435	320
	X52	0.28	1. 40	0.030	0.030	460	360
	X56	0.28	1.40	0.030	0.030	490	390
	X60	0.28	1.40	0.030	0.030	520	415
	X65	0.28	1.40	0.030	0.030	535	450
	X70	0.28	1.40	0.030	0.030	570	485
Standard	Grade	Chemical Composition(%)				Tensile STrength	Yield Strength
Standard	Grade	C Mn P S				Mpa	Mpa
API 5L PSL2 (SMLS)	B	0.24	1.20	0.025	0.015	415-655	245-450
	X42	0.24	1.30	0.025	0.015	415-655	290-495
	X46	0.24	1.40	0.025	0.015	435-655	320-525
	X52	0.24	1. 40	0.025	0.015	460-760	360-530
	X56	0.24	1. 40	0.025	0.015	490-760	390-545
	X60	0.24	1. 40	0.025	0.015	520-760	415-565
	X65	0.24	1.40	0.025	0.015	535-760	450-600
	X70	0.24	1.40	0.025	0.015	570-760	485-635
	X80	0.24	1. 40	0.025	0.015	625-825	555-705

Standard	Class	Grade	Chemical Analysis(%)				Mechanical Prop
Standard	Class	Grade	C	Mn	P	S	Tensile Strength (Mpa)	Yield Strength (Mpa)
API 5L (ERW)	PSL1	B	0.26	1.20	0.030	0.030	≥415	≥245
		X42	0.26	1.30	0.030	0.030	≥415	≥290
		X46	0.26	1.40	0.030	0.030	≥435	≥320
		X52	0.26	1.40	0.030	0.030	≥460	≥360
		X56	0.26	1.40	0.030	0.030	≥490	≥390
		X60	0.26	1.40	0.030	0.030	≥520	≥415
		X65	0.26	1.45	0.030	0.030	≥535	≥450
		X70	0.26	1.65	0.030	0.030	≥570	≥485
	PSL2	B	0.22	1.20	0.025	0.015	415-655	245-450
		X42	0.22	1.30	0.025	0.015	415-655	290-495
		X46	0.22	1.40	0.025	0.015	435-655	320-525
		X52	0.22	1.40	0.025	0.015	460-760	360-530
		X56	0.22	1.40	0.025	0.015	490-760	390-545
		X60	0.22	1.40	0.025	0.015	520-760	415-565
		X65	0.22	1.45	0.025	0.015	535-760	450-600
		X70	0.22	1.65	0.025	0.015	570-760	485-635
		X80	0.22	1.85	0.025	0.015	625-825	555-705

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API 5L PSL2 X70 Line Pipe