Spiral submerged arc welded steel pipe way; before tilting intermittent production; line speed, 0.5--3m / min; welding speed, 0.5--3m / min. Units from the open-book machine, straightening machine, centering device, hydraulic shears, milling welding, cutting [...]
Welded steel pipe refers strip or plate bending round, square and other shapes and then welded into the surface jointed pipe. Welded steel pipes used in billet steel sheet or strip. By welding methods classification [...]
Q345D spiral pipe production has strict operational procedures and manufacturing processes, Q345D spiral steel pipe outer diameter of about 30 nm and an inner diameter of about 10 nm, about 11 nm from the adjacent [...]
Spiral Pipe is a strip coil as raw material, often warm extrusion molding, automatic double wire-sided submerged arc welding process welded spiral seam steel pipe main production processes are as follows: 1. raw materials that [...]
For he spiral steel pipe often produced “outside folds” such defects, many eddy current probe instrument and often can be found. Often outside off to the naked eye visible, but not the only instrument ET [...]
Spiral steel surface by high velocity and turbulence of the fluid-like impact, along with wear and corrosion damage was known corrosion and wear. Impact Corrosion and wear is the primary form of corrosion. Spiral pipe [...]
Spiral welded steel pipes are widely used in Oil, Natural Gas, Water and other flammable & nonflammable liquid conveyance and distribution pipelines, steel structures for construction and other general purposes by means of their wide size range.