508 Tube 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: 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

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

Raw 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
Standard:API 5LX, API 5L A&B, ASTM A53 A&B, Up to API X-70

Accreditations

We pride our selves in our 30 years’ experience in roll form engineering and ERW tube mill design. We look after our customers every step of the way throughout the entire manufacturing lifecyle and offer our insights & services on optimizing their roll form equipment.