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Hfw - Erw Pipes

High Frequency Electric Resistance Welded [HF-ERW] Pipes

Ratnamani manufactures Carbon Steel High Frequency Electric Resistance Welded (HF-ERW) Pipes with an annual installed capacity of 100,000 MT. HF-ERW pipes are made from hot rolled flat steel strip, formed into tubular shape and the longitudinal seam is welded by the application of mechanical squeezing of edges and heating the edges through High Frequency Electric Resistance applied by induction or conduction. The weld joint is achieved without addition of any filler metal.

Salient Features

Detailed Size Range

Salient Features


Capability to manufacture pipes as per API 5L Grade API X-80 or equivalent

All testing facilities in-house to meet International Standards

Manufacturing of HFW - ERW Pipes

Type Diameter Range Thickness Range Specification¹
Carbon Steel Electric Resistance Welded/ High Frequency welded pipes (ERW/HFW) 6NPS [168.5 MM] to 18NPS [457.2 MM] 0.125”[3.2 MM] to 0.5” [12.7MM] As per ASTM
As per API 5L,
API5CT
As per EN / BS
As per IS
As per Customer’s specification

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