HFI pipe

In High Frequency Welded (HFW) pipe production process, hot rolled steel coils are fed with a high capacity accumulator in order to achieve continuous welding.

HIGH-FREQUENCY WELDING is a welding process in which the heat source used to melt the joining surfaces is obtained from high-frequency (HF) alternating current (ac) resistance heating.
Coil edges are milled using carbide cutters in order to assure a high quality weld. Coils are then formed by cold forming method using a set of cage rolls and fin passes, and then joined using high frequency currents using induction or alternatively conduction methods.
Expertise
Using its specialist expertise in high frequency welding, TWI has supported industry with a range of project and consultancy work which has included:

  • mechanical properties of welded pipe
  • metallurgical studies on welds
  • defect examination
  • optimisation studies on HF butt welding of tailored blanks
Resource:
  • testing facilities for fracture mechanics studies
  • corrosion & metallurgical test equipment
  • non-destructive testing
  • process advice & troubleshooting
  • tailored training courses
Application Areas
HFW welded steel pipes are widely preferred in Oil, Natural Gas, Water and other liquids transportation and distribution lines, heating, cooling, ventilation piping and steel structures for construction and other general purposes by means of precise production tolerances and high capacity manufacturing method.

All SSE's Pipes and fittings are conducted to ISO 9001 quality standard
 Why not search the site for more information on high frequency welding (ERW)
 Want to discuss high frequency welding (ERW)? 
 If you work for an Industrial Member of SSE look in Who Knows to find the expert.
 Mail to: sales@sunnysteel.com , If you want to get more information.

Get in Touch

Welcome to Sunny Steel Enterprise Ltd.

Sunny Steel provide a wide range of steel products as Steel pipes, Seamless tube and seamless pipes, Alloy pipes, Pipe fittings, Composite steel pipe used in the industry, construction etc.
You can get in touch by telephone, post, online or E-mail.
Please check the help section first to see if your question may be answered there.

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Pipe fitting
Pipe fitting is work that involves the installation or repair of pipes or tubes. Pipes and tubes are necessary for a wide range of reasons.

Flanges General

Flanges General
A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system.

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