LSAW pipe welding line producing large diameter line pipe

SPECIAL GRADE 02 — LSAW LINE PIPE

LSAW line pipe — API 5L PSL2, Gr.B/L245 to X80/L555

Large-diameter longitudinally submerged arc welded pipe for oil, gas, water and slurry transmission, produced to API SPEC 5L and ISO 3183 PSL2 from Ø406 mm to Ø1422 mm, with wall thickness up to 52.37 mm depending on grade.

Request a quotation See the capability tables

At a glance

Ø406 – Ø1422 mm (16 – 56 in) Wall 6.35 – 52.37 mm Gr.B/L245 → X80/L555 API SPEC 5L / ISO 3183 PSL2 Coating, testing & documents

WHY LSAW

The standard choice for large-diameter transmission lines

LSAW (longitudinally submerged arc welded) pipe is used for oil and gas trunk lines, water transmission mains and slurry lines. Pipe is produced to API SPEC 5L and ISO 3183 PSL2: PSL2 goes beyond tensile requirements, with restricted carbon equivalent, maximum sulphur and phosphorus, mandatory Charpy V-notch impact testing, hydrostatic testing and non-destructive examination on each pipe before dispatch.

Oil & gas trunk linesGathering & station pipingWater transmission mains Slurry & tailings linesHydrogen blendingPiling & structural pipe

Standard	API SPEC 5L / ISO 3183 PSL2 (PSL1 also available)
Grades	Gr.B/L245, X42/L290, X46/L320, X52/L360, X60/L415, X65/L450, X70/L485, X80/L555
Size	Ø406 – Ø1422 mm (16 – 56 in), two LSAW workshops
Wall thickness	6.35 – 52.37 mm depending on grade
Coating	3PE / 3LPE, FBE, internal epoxy lining
Testing	Hydrostatic test, UT / RT weld inspection, Charpy impact testing

LSAW line pipe production line — Large-diameter line pipe being formed and welded

Size and wall thickness capability — API SPEC 5L / ISO 3183 PSL2

Maximum wall thickness in millimetres for each outside diameter and steel grade. Values marked * are pending re-confirmation against the mill's latest capability sheet.

1# Oil & Gas line pipe workshop

Pipe OD (mm)	OD (in)	Min WT (mm)	Max WT (mm) by steel grade
			Gr.B/L245	X42/L290	X46/L320	X52/L360	X60/L415	X65/L450	X70/L485	X80/L555
508	20	7.92	28.58	26.97	26.97	23.83	23.83	22.23	20.64	14.27
559	22	7.92	28.58	26.97	26.97	23.83	23.83	22.23	20.64	14.27
610	24	7.92	30.18	28.58	28.58	25.40	25.40	25.40	22.23	15.88
711	28	7.92	30.96	30.18	30.18	28.58	28.58	28.58	25.40	17.48
762	30	7.92	31.75	30.18	30.18	28.58	28.58	28.58	25.40	19.05
813	32	7.92	31.75	30.96	30.96	28.58	28.58	28.58	25.40	20.62
914	36	7.92	33.23	31.75	31.75	31.75	30.96	30.18	28.58	22.23
1016	40	7.92	35.71	33.23	33.23	31.75	31.75	30.18	28.58	23.32
1067	42	7.92	35.71	33.23	32.54	32.54	31.75	30.18	30.18	25.40
1118	44	7.92	36.53	35.71	33.32	32.54	31.75	30.18	30.96	26.97
1219	48	9.53	40.49	38.89	35.71	33.32	33.32	31.75	31.75	28.58
1321	52	9.53	47.63	44.45	38.10	35.71	35.71	33.32	33.32	28.58
1422	56	9.53	52.37	47.63	44.45	38.10	38.10	35.71	35.71	30.18

2# New Energy line pipe workshop

Pipe OD (mm)	OD (in)	Min WT (mm)	Max WT (mm) by steel grade
			Gr.B/L245	X42/L290	X46/L320	X52/L360	X60/L415	X65/L450	X70/L485	X80/L555
406	16	6.35	26.97	25.40	25.40	22.23	22.23	20.62	19.05	14.27
457	18	6.35	26.97	25.40	25.40	22.23	22.23	20.62	19.05	14.27
508	20	6.35	28.58	26.97	26.97	23.83	23.83	22.23	20.64	14.27
559	22	6.35	28.58	26.97	26.97	23.83	23.83	22.23	20.64	14.27
610	24	7.13	30.18	28.58	28.58	25.40	25.40	25.40	22.23	15.88
660	26	7.13	30.18	28.58	28.58	25.40	25.40	26.97*	22.23	15.88
711	28	7.13	30.96	30.18	30.18	28.58	28.58	28.58	25.40	17.48
762	30	7.13	31.75	30.18	30.18	28.58	28.58	28.58	25.40	17.48
813	32	7.92	31.75	30.96	30.96	28.58	28.58	28.58	25.40	17.48
914	36	7.92	33.23	31.75	31.75	31.75	31.75	30.18	28.58	19.05
1016	40	7.92	35.71	33.23	33.23	33.23	31.75	31.75	30.18	22.22*

Capability data are given for preliminary selection; the rolling programme and the confirmed purchase order govern final availability. Quotation states grade, size, quantity, weight and delivery term.

LSAW line pipe — questions buyers ask

What is the difference between PSL1 and PSL2 line pipe?

PSL1 covers chemical composition and tensile requirements only. PSL2 adds a restriction on carbon equivalent, maximum sulphur and phosphorus, mandatory Charpy V-notch impact testing and more frequent testing. Sour service, low-temperature and high-pressure lines are normally specified in PSL2.

What is the maximum wall thickness for X80/L555?

In the oil and gas line pipe workshop, X80/L555 is rolled up to 30.18 mm at Ø1422 mm (56 in) and up to 28.58 mm at Ø1219 mm (48 in). Thicker walls at smaller diameters are available in lower grades — the capability tables list every combination.

Do you supply coated pipe?

Yes. 3PE (3LPE), FBE and internal epoxy lining can be applied, and pipe ends can be bevelled and capped for welding on site. Coating thickness and holiday test reports come with the certificate pack.

Which grades are used most for gas transmission?

X52/L360, X60/L415 and X65/L450 are the most common gas transmission grades. X70/L485 and X80/L555 are specified for high-pressure, long-distance lines where lower wall thickness and tonnage matter.

Request a quotation

Send your line list — a firm quotation follows.

Send the standard, outside diameter, wall thickness, grade, quantity and destination port. If you only have a tender document or a piping class, send that instead — we will read it and come back with the pipe specification.

Sales e-mail	info@yuxindapipe.com
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Works & port	Tianjin, China — 40 minutes from Tianjin Port
Working hours	Monday–Saturday, 08:30–20:00 (GMT+8)
Languages	English · Français · العربية · Português

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