ERW, LSAW STEEL PIPE Manufacturer

Specification: φ60.3-2,032mm(2”-80”), wall thickness 7-100mm

API 5L, ASTM A53, AS/NZS 1163:2016, EN10219, ASTM A671/A672, ASTM A691…

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ERW, LSAW, DSAW (2″-80″) steel pipe manufacturer Since 2003

API 5L/ISO3183 PSL1 & PSL2 Line Pipe

ERW, LSAW, DSAW steel pipe;
Grade: B, X42-X80; Diameter up to 72”

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AS NZS 1163 Hollow Sections

Grade: C250/C350/C450 L0
O.D: 114.3-1,422mm; Round pipe, bend pipe

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ASTM A252 Steel Pipe Piles

Grade: 1, 2, and 3
Out diameter: 219.1-1016mm;LSAW, DSAW pipe piling.

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ASTM A53 B ERW Pipes

Grade: B; 2”-26”; 6-12 meters
Surface: Bare, black, HDG (Hot dipped galvanized)

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ASTM A671 EFW Steel Pipes

Grade: CA55, CB60, CB65, CB70, CC60, CC65, CC70
Out diameter: 406.4-1,422mm

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ASTM A672 EFW Steel Pipes

Grade: A55, B60, B65, B70, C60, C65, C70
Out diameter: 406.4-1,422mm

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FBE/3LPE Coating Pipes

Standard: DIN30670/30678, CSSA Z245.20, AWWA C210
Coating thickness: 2.9mm / 3.2mm / 3.5mm / 3.7mm / 4.2mm

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EN10219-1 Structural Steel Pipes

Grade: S235, S355 JR/J0/J2; ERW, LSAW steel pipe
O.D: 60.3-1,422mm; Round pipe, bend pipe

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About LONGMA

LONGMA is one of China leading ERW/LSAW steel pipes manufacturers since 2003, with a registered capital of 176 million RMB, covering an area of 230,000 square meters. The company specializes in the production: large-diameter thick-walled double-sided sub-arc-seam welding steel pipe, LSAW-Longitudinal Submerged Arc Welded, ERW steel pipes. By the end of 2022, the company’s annual output exceeded 500,000 tons.

Why Choose Us

Professional Experiences

We have been serving the Oil and Gas company for the last decades, succeed to achieve profitable full satisfied contracts with the most famous customers of the oilfield activity such as SINOPEC / CNPC / PEMEX / PDVSA / PTTEP / AMOTIC / ITECO, and much more.

Efficient Production & Inspection

The fastest delivery of some stock pipes is 7 days, commonly used sizes are delivered within 30 days, and customized products are delivered within 45 days.
From the purchase of steel plates to the delivery of steel pipes, we have specialists to follow up and provide records of various tests/inspections.

Complete Traceability

Every single product from LONGMA is completely traceable for each process, including raw material control, Heating No, Batch No, and Product No. Once the Non-qualified material is found, corresponding test and improvement will be done accordingly.