ERW/API 508 TUBE MILL

This pipe is used especially for Petroleum, Natural gas, City gas, Pipe network, Chemical industry, Electricity, Steel truss, Water and Gas pipeline; it is widely used for a variety of pressure pipelines

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Product serial number

Category

Tube Mill

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Keyword:

tube

and

section

strip

pipe

min

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Product Description

Parameters

Brief introduction of ERW pipe mill

Raw material (Steel Strip) in form of a coil is uncoiled and feed into forming section passing through the equipment of entry section. Entry section enables the tube mill to run continuously by using strip joining and accumulation equipment. Tube is formed in round shape passing through a set of driven and idler rollers of forming section before welding. In welding section tube is longitudinally welded by using high frequency induction welding method. Outside bead is removed and formed in shape of scrap. The weld seam is ironed and tube passes through the cooling section. In sizing section, tube is formed to specified size and converted into specified shape. After sizing, tube is cut to specified length by using flying cutting equipment and delivered in collecting troughs passing through run out conveyor.

Function

Process flow

Coil loading—Uncoiling—Pinching & Leveling—End Shearing‐Strip joining—Horizontal spiral strip accumulator—Forming‐HF Welding– O.D bead cutter–SEAM ANNEALER —Cooling—Sizing & Turks head‐Measuring roll—Flying cut off machine—Run out conveyor_ End facing & chamfering_ Hydrostatic Test- Ultrasonic Testers—Packing

Specification
- Row material	: Carbon Steel, Cold or Hot Rolled pre slit strip coils of weld able grade with max. 0.2% carbon.
- Material grade	: Q235A~Q345，B，10#、20#，J55，N80，X42-X70
- Round pipe O.D.	: min 165mm, max.508mm
- Wall thickness of Round	: min.6.0mm, max.16.0mm
- Square tube	: min 130x130mm, max400x400 mm
- Rectangle tube	: min 120x140mm, max350x450 mm
- Wall thickness sq & rec.	: min.6.0mm, max.12.7mm
- H.F. welder	: Solid state,1000 kW
- Line Speed	: Max 30 m/min
- Pipe length	: 5 – 18 m