ERW426 high-frequency welded pipe production line is the special equipment providing longitudinally welded pipe and cold formed steel for industries such as metallurgy, construction, transportation, machinery, vehicles and so on. Taking cold or hot-rolled steel as raw materials, through cold-formed and high-frequency welding method to produce the suitable round tube. 

Adopts “FF” foming method to produce round pipe, and square to square to produce square and rectangle pipe.

Material of the Coil: low carbon steel and low alloy steel,σb≤630MPa,σs≤345 MPa.

Steel Type: AMTS512, Q345B, 20#, X70

Strip Steel Coil
Material: low carbon steel and low alloy steel
Strip steel thickness: 3.0~16.0mm
Strip steel width: 440~1340 mm
Inner Diameter: Φ580mm~Φ760mm
Outer Diameter: Φ1300mm~Φ2200mm
Max Weight: Max.30 ton

Steel Pipe Specification
Round Pipe: Φ139~Φ426mm
Thickness: 3.0~16.0 mm
Square Pipe: 110×110-335×335mm
Thickness: 3.0~16.0 mm
Length Scope of Pipe: 6~12m
Tolerance: ±3 mm

Technology Data

Forming method: “FF” foming method to produce round pipe, and square to square to produce square and rectangle pipe.

Forming Speed: 10-25m/min

Welding mothed: H.F. welding

Feeding direction: Right to left

Compressed air consumption: 80x10³m³ the whole year.

Compressed air pressure: 0.5Mpa

Water consumption: 7000m3/a, recycling

Drive power: 380V; 50HZ

The Technical Flow of the Production Line

Feeding Strip → Uncoiler → Peeler → Seven Roll Flattening → Auto-Shear and End Welder → Spiral Accumulator → Eage Milling → Forming (Xztf) → High-Frequency Induction Welding → Removing External and Internal Burr → Polishing Roller → Online U.T. Tester → Heat Treatment Of Welding Seam → Drawing → Air Cooling → Water Cooling → Sizing → Computer Flying Saw → Pullout Roller Table(Water Washing) → Stave Testing → Pipe End and Chamfering Machine → Water Pressure Testing → U.T. Testing → Weighing and Measuring → Painting and Marking → Packing → Warehousing

Equipment Manufacturing and Inspection/Test

1. The Seller manufactures the equipment according to the relevant standards strictly and tests the equipment according to the technical documents.

2. The Buyer shall inspect and test the commodities at the Seller’s factory at the Seller informs to confirm their conformity to the Contract Specifications. If the Buyer fails to arrive on time, the Seller shall have the right to deliver the goods according to the date stipulated in the Contract.

Technical Documents

The Seller shall submit the following documents in English:

1. Foundation Plan (including the arrangement of water, electricity and air ect.)

2. Arrangement Plan

3. Operation Instruction (including the structure diagrams of the equipment, operation instruction, maintenance and trouble shooting, safe rules, consumable parts list and purchased parts list)

Please Contact by Email at selina@tenengchina.com for much more Technical Parameters or Documents!