1. Weld appearance of the basic requirements of dsaw pipeDSAW pipe before the non-destructive testing, weld appearance inspection should meet the requirements. The general requirements for the appearance of the seam and the surface quality...英国华人论坛
Pre - welding technology statusIn the early dsaw pipe production was not pre-welded until the second generation of UOE pipe unit began to show a pre-welder, but the moment of pre-welding for the joint welding, the distance of about 300mm, t...英国华人论坛
DSAW steel pipe is a strip coil as raw material, after extrusion at room temperature, with automatic double wire-sided submerged arc welding process welded spiral seam steel pipe.DSAW steel pipe process performance are as follows:1. Bending...英国华人论坛