Low pressure liquid transportation steel pipe,CS pipe,API welded pipe,Square steel tube

Low pressure liquid transportation steel pipe

Pipe type:Spiral seam welded steel pipe, Double-sided submerged arc welding steel pipe(DSAW steel pipe), helical submerged arc welded steel pipe,SSAW Pipe, SSAW Steel Pipe, Spiral Steel Pipe, Welded S

Size : OD:219-3500mm WT:1.65-40mm, Length: 6mtr-20mtr

Standard & Grade :ASTM A53 Grades A,B,C

Ends:Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends

The process of Ssaw steel pipe:

Steel coils→Ray material test → Delivery straightening → Plate cutting and welding → circle shear edge milling → Forming → inside auto-welding → Outside auto-welding → Online ultrasonic inspection → Fixed length cutting → Visual inspection for outside seam → Visusl inspection for inside seam → X-ray inspection for welding seam → Even end and end bevel → Hydrostatic test → Ultrasonic inspection → Final product inspection → Marking → Store up

STANDARD OF SSAW STEEL PIPE

Standard	Grade	Chemical Composition(%)				Tensile STrength(min)	Yield Strength(min)
Standard	Grade	cMnPS				Mpa	Mpa
API 5L PSL1	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	cMnPS				Mpa	Mpa
API 5L PSL2	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

PSL 1 VS. PSL 2 SPEC SHEET

	PSL 1	PSL 2
Grade range	A25 through X70	GR B through X80	Table 1
Size range	0.405 through 80	4-2/1 through 80	Table 1
Type of pipe ends	Plain-end, threaded-end, bevelled-end, special coupling pipe	Plain-end	Table 1
Seam welding	All methods continous welding limited to Grade A25	All methods except continous and laser welding	Table 1
Electric welds: welder frequency	No minimum	100 kHz minimum	5.1.3.3.2
Heat treatments of electric welds	Required for grades > X42	Required for all grades (GR B through X80)	5.1.3.3.1; J.3.3.2:6.2.7
Chemistry: max C for seamless pipe	0.28% for grades > Gr B	0.24%	Tables 2A, 2B
Chemistry: max C for welded pipe	0.26% for grades > Gr B	0.22%	Tables 2A, 2B
Chemistry: max P	0.03%	0.03%	Tables 2A, 2B
Chemistry: max S	Only when purchases specifies SR18	0.02%	Tables 2A, 2B
Carbon equivalent	None	Maximum required for each grade	4.2:4.3:6.1.3: SR15.1
Yield strength, maximum	None	Maximum for each grade	Tables 3A, 3B
UTS, maximum	None required	Maximum for each grade	Tables 3A, 3B
Fracture toughness	Only when purchaser specifies SR4	Required for all grades

DIMENSION TOLERANCES OF SSAW STEEL PIPE

Standard	Standard
Standard	SY/T5040-2000	Y/T5037-2000	SY/T9711.1-197	ASTM A252	AWWA C200-9	API 5L PSL1
Tube end OD deviation	± 0.5%D	± 0.5%D	-0.79mm～+2.38	<± 0.1%T	<± 0.1%T	± 1.6mm
Wall thickness	± 10.0%T	D<508mm, ±12.5%T	- 8%T～+19.5%T	<- 12.5%T	-8%T～+19.5%T	5.0mm
Wall thickness	± 10.0%T	D>508mm, ±10.0%T	- 8%T～+19.5%T	<- 12.5%T	-8%T～+19.5%T	T≥15.0mm, ±1.5m

Hydrogrand Steel Pipe

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+86-731-84625800
+86-18684771190
info@hgsteelpipe.com