HFW
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 HIGH-FREQUENCY ELECTRIC WELDED (HFW) PIPES

Production Line
This mill produces HFW pipes, square pipes, rectangular pipes and Cold Formed Profile Steel. The mill is equipped with Thermatool's 600KW high frequency welding system and medium frequency heat treatment system, Krautkramer's multi-channel online seam UT tester, Joy Sound's hydrostatic tester, Guild International's shear and welder, super coil accumulator, Pacific's computerized cutting machine and Chicago Roll's rollers system. This is a highly automatic and stable mill.

Specifications     
Outside Diameter:Φ114mm- Φ356mm (4"- 14")
Wall Thickness:3.0mm- 12.7mm (1/8"- 1/2")
Quality Standards:API、DNV、ISO、DEP、EN、ASTM、DIN、BS、GB、CSA
Length:6m-18.5m (20' - 60' )
Grades:GB/T9711 L190-L555 (API 5L A-X80)

Manufacturing Process


PRODUCT RANGE

Pipe O.D W.T. Length(m)
Min.Yield Strength(Mpa)
In. Mm 245(B) 290(X42) 360(X52) 415(X60) 450(X65) 485(X70) 555(X80)
4 1/2 114.3 3.0-8.7 3.0-8.7 3.0-8.1 3.0-7.6 3.0-7.3 3.0-7.1 3.0-6.4 6.0-18.5
5 9/16 141.3 3.2-9.5 3.2-9.5 3.2-8.7 3.2-8.1 3.2-7.8 3.2-7.6 3.2-7.1 6.0-18.5
6 5/8 168.3 3.4-11.1 3.4-11.1 3.4-10.3 3.4-9.5 3.4-9.1 3.4-8.7 3.4-7.8 6.0-18.5
7 5/8 193.7 3.6-11.5 3.6-11.5 3.6-10.5 3.6-9.8 3.6-9.2 3.6-9.0 3.6-8.1 6.0-18.5
8 5/8 219.1 3.8-11.9 3.8-11.9 3.8-11.1 3.8-10.3 3.8-9.8 3.8-9.5 3.8-8.7 6.0-18.5
10 3/4 273.1 4.3-12.7 4.3-12.7 4.3-11.9 4.3-11.1 4.3-10.7 4.3-10.3 4.3-9.6 6.0-18.5
12 3/4 323.9 4.8-12.7 4.8-12.7 4.8-11.9 4.8-11.1 4.8-10.7 4.8-10.3 4.8-9.6 6.0-18.5
13 3/8 339.7 5.2-12.7 5.2-12.7 5.2-11.9 5.2-11.1 5.2-10.7 5.2-10.3 5.2-9.6 6.0-18.5
14 355.6 5.6-12.7 5.6-12.7 5.6-11.9 5.6-11.1 5.6-10.7 5.6-10.3 5.6-9.6 6.0-18.5

Copyright © 1993-2018 Guangzhou Pearl River Petroleum Steel Pipe Co., Ltd. GD ICP NO.05091798