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Quenching and tempering treatment of seamless steel pipe
After the quenching and tempering treatment of seamless pipes, the parts produced have good comprehensive mechanical properties and are widely used in various important structural parts, especially those connecting rods, bolts, gears and shafts that work under alternating loads. But the surface h...Read more -
What are the common uses of seamless steel tubes?
The seamless tube is formed in one piece, directly pierced from round steel, without welds on the surface, and has a wide range of applications. Because of the special processing of seamless steel tubes, carbon structural steel, low alloy structural steel, etc. are generally used for production, ...Read more -
Casing & tubing pressure rating
Casing pressure rating Out diameter mm Inner diameter mm Internal pressure strength Mpa External collapse strength Mpa Internal volume L/m 73.03 62.0 72.9 76.9 3.02 88.9 76.0 70.1 72.6 4.54 Tubing pressure rating Out diameter mm Inner diameter mm Internal pressure ...Read more -
Application of seamless steel pipe in construction industry
Among the many pipeline materials, the most practical one is seamless pipe (SMLS), which is a relatively powerful pipeline material, not only because of the wide range of application fields and scope of this pipeline material, but more importantly, Because the quality of seamless steel pipe is ve...Read more -
Resistance welding method
There are many types of electric resistance welding(erw), and there are three types of welding, seam welding, butt welding and projection welding. First, spot welding Spot welding is a method of electric resistance welding in which a weldment is assembled into a lap joint and pressed between two ...Read more -
Quality inspection method of spiral pipe
The quality inspection method of spiral pipe (ssaw) is as follows: 1. Judging from the surface, that is, in visual inspection. Visual inspection of welded joints is a simple procedure with various inspection methods and is an important part of finished product inspection, mainly to find welding...Read more