Seamless steel pipes are widely used.1. General-purpose seamless steel pipes are rolled from ordinary carbon structural steel, low-alloy structural steel, or alloy structural steel, and have the largest output. They are mainly used as pipelines or structural parts for conveying fluids.2. According t

What is the defect in outer surface of the hot expanded seamless pipe?

The difference between high frequency welded steel pipe and straight-seam welded steel pipeFirst. Different in natureA. High-frequency welded steel pipe: After the hot-rolled coil is formed by the forming machine, the skin effect and proximity effect of the high-frequency current are used to heat an

Usage and functions of large-diameter straight seam welded pipes1. The use of large-diameter longitudinally welded pipes can be divided into oil well pipes (casings, tubing, and drill pipes, etc.), line pipes, boiler pipes, mechanical structure pipes, hydraulic prop pipes, gas cylinder pipes, geolog