Hot Rolled Straight Seam Welded Pipe Mill For ERW Black Round Tube Building Materials

 hot rolled straight seam welded steel pipes, ERW black round tube building materials Hot sale

1. Introduction

Spiral welded pipe mill is used to roll the low carbon steel/ low alloy steel strip into tube by a certain forming angle, further weld it into steel pipe by sub-merged arc welder.

Large diameter pipes can be produced with narrow steel strip.

2. Function

For liquid delivery: water supply& drainage;
For gas delivery: coal gas, steam and LPG;
For structural use: piling pipe, structural pipe in the field of bridge, dock, road, and construction, etc.

3. Process flow
Feeding→uncoiling→leveling→shearing& butt welding→rotary shear→edge milling→main drive→pre-bend& guide board→forming→inside welding→outside welding→cutting off→pull out→end-facing& beveling→hydrotesting→collection