erw89

pipe mill Used for making ERW pipes good quality Name:HF Welded Pipe Mill Line HG89Material:Specs:HG89 Info:Forming and sizing part are the main parts of ERW production line. The mills adopts various molding methods. Forming part bend the steel strip into tube blank, by contact or induction high frequency welder, the borders reach to welding temperature at moment, then finish the welding under ...