High frequency welding (HFW) steel pipe is that ERW pipe produced with a welding current frequency equal to or greater than 70 kHZ. Through high-frequency current welding resistance, the heat generated in the contact objects, so the objected surface are heated to the plastic state, then with or without forging to achieve a combination of steels. HFW is a solid resistance heat energy.  The high frequency current pass through the metal conductor, will produce two peculiar effects, skin effect and proximity effect.  And HFW process is to use the skin effect to concentrated on steel object surface, use proximity effects to control the position and the power of the high-frequency electric current flow path.  Since the speed is very high, the contacted plate edge could be heated and melted in shore time, then extruded through docking process.

The range of production:

OD: 1/2” -24 “(21.3mm -609mm)

W.T: SCH10-40(2mm to 20mm)

Standard: API 5L/ASTM A53/A252/A500/EN10217/10219/EN10210/AS1163/,GB/T3091-2015,GB/T9711. etc.

Materials: GR.B,X42, X52, X56 ,Q235B, Q345B, Q355C,Q355D,S275JR, S275J0H, S355JOH,C350,C350L0 SS400

Length: 5.8M/6M/12M/18M fixed length, SRL/DRL

HFW feature and application:

HFW features: simple production process, high production efficiency, low cost, fast delivery

HFW steel pipes are mainly used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction.

Used for liquid transportation: water supply and drainage.

Used for gas transportation: gas, steam, liquefied petroleum gas.

For structural purposes: as piling pipes, as bridges; pipes for wharves, roads, building structures, etc.

Market:

The HFW pipes have been exported to Singapore,Malaysia,India,Yemen,Dubai,Kuwait,Brazil,Bahrain, Saudi Arabia,Ecuador,Guatemala,Bangladesh,Chile,Korea,Indonesia,Philippines, Vietnam.etc

Huayang is one of the biggest supplier & exporter of Welded Steel Pipes in China. We are API,CPR,Gost Certificate approved manufacturer of steel pipes,with the HEW production lines 12, we stock HFW steel tubes in wide sizes & Thickness about 400000 tons.Welcome your Visit to Huayang,ERW pipe and LSAW pipe factory.

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  Transportation

  Predominant geological location, 160 kilometers from XINGANG port

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  Strict Quality Control

  From the raw material control to the finished products, the whole process be managed accroding to ISO 9000 quality management system and the material standard, also to be inspected by our QC strictly

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  Raw Material

  Based on strong financial support, purchase the huge quantity raw material to ensure continuous production.

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  Professional Team

  Effective and professional Team, provide the best services & solution to ship the goods successfully

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  Government Support

  As a leading manufacturer and the first major taxpayer in local market, Government give great support to Huayang

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  Fast Delivery

  HY production lines pass Environmental Assessment, keep 30,000 Tons stock per month,and enough raw material stock for the common steel grade,and numerous production lines

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  Advanced Production Line

  Advanced imported production equipment;German once-through rolling machines; British CT METORI digital controllers; JCOE Forming Machine from Taiyuan Heavy Industry