The surface quenching and tempering heat treatment of straight seam welded steel pipe is usually carried out by induction heating or flame heating. The main technical parameters are surface hardness, local hardness, and effective hardened layer depth. Vickers hardness tester can be used for hardness

High-pressure seamless steel pipes and high-pressure boiler tubes are a type of boiler tubes that belong to the seamless steel pipes category. The manufacturing method is the same as that of the seamless pipe, but there are strict requirements on the steel type used to manufacture the steel pipe. Hi

1. The purchase of straight seam steel pipe needs to know the type of steel pipe1) By type: straight seam steel pipe, seamless steel pipe, spiral steel pipe, etc.2) Section shape classification of straight seam steel pipe classification: square pipe, rectangular pipe, oval pipe, flat oval pipe, semi

1. 316 stainless steel is a type of molybdenum-containing stainless steel. Due to the molybdenum in the steel, the overall performance of this steel is better than that of 310 and 304 stainless steel. Under high-temperature conditions, when the concentration of sulfuric acid is lower than 15% and hi