LSAW Steel Pipes

Achieved through welding steel plates in a straight pattern using an electric arc submerged under granular flux.

LSAW steel pipes are engineered for projects that require superior strength, dimensional accuracy, and dependable performance under demanding conditions.

Built using submerged arc welding technology, these pipes provide excellent weld integrity, high load-bearing capacity, and reliable long-distance pipeline performance.

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Overview

LSAW Steel Pipes are produced by forming steel plates into cylindrical shapes and welding them longitudinally using the Submerged Arc Welding (SAW) process.

This manufacturing method creates pipes with:

high structural integrity
precise dimensional consistency
strong pressure resistance
excellent durability for critical infrastructure projects

Key Specifications

Typical Standard and Specifications

ASTM A252, API 5L B, ASTM A139, EM10219, AWWA C200

Mechanical Properties

Standard specification for straight seam or spiral weld piling pipe

OD Tolerance: +/- 1%
Wall Tolerance: 12.5%

Grade	Minimum Yield	Minimum Tensile
Grade 1	30,000 PSI	50,000 PSI
Grade 2	35,000 PSI	60,000 PSI
Grade 3	45,000 PSI	66,000 PSI

The steel shall contain no more than 0.05% phosphorus.

Each of the Standard / Specification matches a particular application; ensure to consult with designer which suits the project best.

Available Sizes (Chart Summary)

Parameter	Range
Outer Diameter (OD)	24" – 64" / 609.6mm – 1625.8mm
Wall Thickness	1/4" to 1-13/32" / 6.35mm – 35.7mm

Availability of sizes is subject to final confirmation.

Typical Material Grade for SSAW / LSAW

EN 10025	S235, S275, S355, S390, S420, S460
GB/T	Q235, Q345, Q390, Q460
API	X42, X46, X52, X56, X60, X65, X70, X80
ASTM A572	Gr. 43, Gr. 50, Gr. 60
Low Corrosion Steel	ASTM A690 Mariner Steel Grade / 345 / 390 / 430