The so-called seamless stainless steel pipe and carbon steel seamless pipe distinction, mainly refers to the difference in carbon steel and stainless steel design rules, which are a few differences are summarized as follows: First, the stainless steel produced during cold work hardening, for example

OCTG pipe are steel pipes used to support the walls of oil and gas wells to ensure the normal operation of the entire oil well after drilling and completion. Each well needs to use several layers of casing according to different drilling depths and geological conditions.After casing under the well t

1. Water welding with pressureThis method is suitable when the pipeline leaks, the pipe itself is in good condition without serious rust and other defects, and the pressure in the pipe is small, so it can be directly welded.2. Self-made pipe clamp plugging methodThis method is suitable for methods s

The hot-dip galvanized pipe is to make the molten metal react with the iron matrix to produce an alloy layer so that the matrix and the coating are combined. Hot-dip galvanizing is to first pickle the steel pipe. In order to remove the iron oxide on the surface of the steel pipe, after the pickling,

1 Judging from the surface, that is, in visual inspection. The visual inspection of welded joints is a simple procedure with a wide variety of inspection methods. It is an important part of finished product inspection, mainly to find welding surface defects and dimensional deviations. Generally, the

1. Welding processIn the welding process, the welding method of the spiral steel pipe and the longitudinal welded pipe is the same, but the longitudinal welded pipe inevitably has many T-shaped welds, so the probability of welding defects is greatly increased, and the welding residual stress at the

Stainless steel pipe fittings are a kind of pipe fittings. They are made of stainless steel materials, so they are called stainless steel pipe fittings. They include stainless steel elbows, stainless steel tees, stainless steel crosses, stainless steel reducers, stainless steel pipe caps, etc., acco