Electric Resistance Welded Pipe (ERW Pipe)

Electric Resistance Welded Pipe(ERW Pipe)is a widely used welded steel pipe produced by forming steel strip into a tubular shape and welding the longitudinal seam using electric resistance heating and pressure welding.It is known for high dimensional accuracy,smooth surface,and stable performance,suitable for medium‑and small‑diameter piping in various industries.

Production Characteristics

Welded by high‑frequency or low‑frequency electric resistance without filling material

Narrow heat‑affected zone,high welding efficiency,and good weld quality

Excellent roundness,straightness,and wall thickness uniformity

Commonly produced in round,square,rectangular and other sectional shapes

Full inspection including hydrostatic test,ultrasonic test,eddy current test

Materials&International Standards

Materials:Q235B,Q355B,ASTM A53 Grade A/B,API 5L Grade B,X42–X65,ST37,ST52

Standards:API 5L,ASTM A53,ASTM A252,EN 10219,GB/T 3091,GB/T 9711

Main Advantages

High production efficiency and competitive cost

Precise dimensions for easy installation and connection

Stable mechanical properties and good pressure resistance

Wide size range and strong customization capability

Suitable for mass production and large‑scale projects

Typical Applications

Water supply,gas supply,heating and fluid transportation pipelines

Municipal engineering,fire protection systems,cable conduits

Construction structures,scaffolding,steel structures

Mechanical manufacturing,automotive parts,conveyor rollers

Agricultural irrigation,industrial piping and general engineering