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LSAW Steel Pipe

Keywords: Longitudinal Welded Pipe, Longitudinal Submerged Arc Welded Pipe, LSAW Pipe, EFW Pipe

Size: OD: 406mm ~ 1422 mm;WT: 6.4mm ~ 44.5mm;LENGTH: 5mtr ~ 12mtr

Standard & Grade: ASTM A53 Grade A/B/C

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

Packing: Bundled/In Bulk, Plastic Caps Plugged, Waterproof Paper Wrapped

Usage: Used for Fluids Transmission, Structural Support in Industrial Construction

Feature: Large Diameter Steel Pipes

Application: Used For Oil/Gas/Water Transmission,Engineering/Offshore Projects

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Product Detail
Specification
Standard
Painting & Coating
Packing & Loading
FAQ

The UOE LSAW STEEL PIPE mill features the most advanced technology and process, achieves high production efficiency, stable product quality and is equipped with complete inspection equipment. UOE mill adopts U & O forming, the formed pipes are welded inside through five internal welding stations with three wires, and welded outside through four external welding stations with three wires. In accordance with different requirements of the customers, the welded pipe can be expanded either by mechanical or hydrostatic expand to improve dimensional accuracy, and eliminate residual stress.

Specifications
Outside Diameter 508mm- 1118mm (20"- 44")
Wall Thickness: 6.0-25.4mm 1/4"-1"
Quality Standards: API、DNV、ISO、DEP、EN、ASTM、DIN、BS、JIS、GB、CSA
Length: 9-12.3m (30'- 40')
Grades: API 5L A-X90,GB/T9711 L190-L625

JOCE SLAW STEEL PIPE is large diameter longitudinal submerged arc welded (SAWL) pipe production line in China. The mill adopts progressive bending process, featuring evenly distributed forming stress, high uniformity of dimension, infinite sizes variation&wide poduct range, and high flexibility, etc.

Specifications
Outside Diameter：Φ406mm- 1626mm (16" - 64" )
Wall Thickness：6.0- 75mm (1/4" - 3" )
Quality Standards：API、DNV、ISO、DEP、EN、ASTM、DIN、BS、JIS、GB、CSA
Length：3-12.5m ( 10'- 41' )
Grades：API 5L A-X100, GB/T9711 L190-L690

LSAW (Longitudinal double submerge arc welding) carbon steel pipe is a type of SAW pipe made of steel plates that were hot rolled by JCOE or UOE forming technology. JCOE technology represents the shaping and forming processes involved during manufacturing as well as the inner and outer welding and cold expansion carried out after welding.

LSAW pipe used to convey low pressure liquid or high pressure petroleum or natural gas, and can be also used widely in structural supports or foundation. The advantage for LSAW type is they could produce more thick wall thickness of pipes, maximum to 120mm.

Features:
- Large diameter steel pipes
- Thick walls
- High-Pressure resistance
- Low-temperature resistance

Tests:
- Chemical Component Analysis
- Mechanical Properties – Elongation, Yield Strength, Ultimate Tensile Strength
- Technical Properties – DWT Test, Impact Test, Blow Test, Flattening Test
- X-ray Test
- Exterior Size Inspection
- Hydrostatic Test
- UT Test

Out Diameter

Wall Thickness(mm)

Inch

6.4

7.1

7.9

9.53

12.7

14.3

15.9

19.1

22.2

25.4

28.6

31.8

34.9

38.1

41.3

44.5

406.4

✓

457

✓

508

✓

559

✓

610

✓

660

✓

711

✓

762

✓

813

✓

864

✓

914

✓

965

✓

1016

✓

1067

✓

1118

✓

1168

✓

1219

✓

1321

✓

1422

✓

1524

✓

1626

✓

Tolerance of Outside Diameter and Wall Thickness of Carbon LSAW Steel Pipe

Types	Standard
Types	SY/T5040-2000	SY/T5037-2000	SY/T9711.1-1977	ASTM A252	AWWA C200-97	API 5L PSL1
Tube end OD deviation	±0.5%D	±0.5%D	-0.79mm～+2.38mm	<±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, ±1.5mm

Chemical Composition and Mechanical Properties of Carbon LSAW Steel Pipe

Standard	Grade	Chemical Composition(max)%					Mechanical Properties(min)
Standard	Grade	C	Mn	Si	S	P	Yield Strength(Mpa)	Tensile Strength(Mpa)
GB/T700-2006	A	0.22	1.4	0.35	0.050	0.045	235	370
	B	0.2	1.4	0.35	0.045	0.045	235	370
	C	0.17	1.4	0.35	0.040	0.040	235	370
	D	0.17	1.4	0.35	0.035	0.035	235	370
GB/T1591-2009	A	0.2	1.7	0.5	0.035	0.035	345	470
	B	0.2	1.7	0.5	0.030	0.030	345	470
	C	0.2	1.7	0.5	0.030	0.030	345	470
BS En10025	S235JR	0.17	1.4	-	0.035	0.035	235	360
	S275JR	0.21	1.5	-	0.035	0.035	275	410
	S355JR	0.24	1.6	-	0.035	0.035	355	470
DIN 17100	ST37-2	0.2	-	-	0.050	0.050	225	340
	ST44-2	0.21	-	-	0.050	0.050	265	410
	ST52-3	0.2	1.6	0.55	0.040	0.040	345	490
JIS G3101	SS400	-	-	-	0.050	0.050	235	400
JIS G3101	SS490	-	-	-	0.050	0.050	275	490
API 5L PSL1	A	0.22	0.9	-	0.03	0.03	210	335
	B	0.26	1.2	-	0.03	0.03	245	415
	X42	0.26	1.3	-	0.03	0.03	290	415
	X46	0.26	1.4	-	0.03	0.03	320	435
	X52	0.26	1.4	-	0.03	0.03	360	460
	X56	0.26	1.1	-	0.03	0.03	390	490
	X60	0.26	1.4	-	0.03	0.03	415	520
	X65	0.26	1.45	-	0.03	0.03	450	535
	X70	0.26	1.65	-	0.03	0.03	585	570

Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings

Carbon-LSAW-Steel-Pipe-Manufacturing-Process

Standards & Specifications: Which standards do our Carbon Steel Pipes comply with?

Q: I need carbon steel pipes for a high-temperature application. Do you supply pipes according to ASTM or EN standards, and how do I choose the right grade?
A: Yes, we strictly manufacture and export pipes according to international standards.
For general structural use and pressure lines, we supply ASTM A53 Gr. B and ASTM A106 Gr. B.
For high-temperature services (boilers/refineries), ASTM A106 Gr. B/C or ASTM A335 (Alloy) is recommended, while API 5L is exclusively for oil and gas transmission lines.
For the European market, we comply with EN 10217 (welded) and EN 10216 (seamless) standards .
We always provide Mill Test Certificates (MTC) verifying the chemical composition and mechanical properties.

Export Licenses & Compliance: What is the "Export License" situation for 2025-2026?

Q: I heard China has new restrictions on steel exports. Can you ship Carbon Steel Pipes without issues in 2026?
A: As of January 1, 2026, China requires export licenses for specific steel products classified under HS Code Chapters 72 and 73 (7301-7307) .
We manage this for you: We handle the application for the Export License with the Ministry of Commerce, submitting the export contract and quality inspection certificates.
Dual-Use Items: For high-strength, corrosion-resistant alloy pipes used in specific industrial sectors, we ensure compliance with the "Dual-Use Item" permit requirements if applicable .

Minimum Order Quantity (MOQ) & Customization

Q: I only need a small batch of large-diameter pipes (20 ft) for a specific project. Do you accept small orders?
A: Yes. While standard sizes are stocked, we accept low MOQs for custom sizes. We support customized moulds for non-standard diameters and specific lengths (random or fixed) .

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