Steel pipe we use stainless steel lining process, that is, on the basis of steel pipe inner wall through a certain process technology to add a layer of stainless steel pipe. This can meet the corrosion resistance, but also to meet the use of high pressure needs.

Materials Selection:

(1) The steel pipe is made of 27SiMn material, which is appropriate to add one or more alloying elements on the basis of high-quality carbon steel to improve the strength, toughness and hardenability of the steel. Compared with high-quality carbon steel, this kind of alloy steel has quite high strength, hardness, wear resistance and good comprehensive mechanical properties. The tensile strength can reach more than 980MPa.

(2) The inner surface of the steel pipe is lined with stainless steel, stainless steel grade 304/316, etc., the thickness is not less than 0.5 mm, the stainless steel pipe is closely bonded with the inner wall of the seamless steel pipe by advanced drawing and spinning process, and the two ends are sealed and welded. No other debris impurities are produced during the use of the inner wall, and the roughness coefficient is not higher than 0.05.

External anticorrosion:

After the outer surface of the steel pipe is sandblasted (Sa2.5 grade); Spray epoxy coating coating thickness is not less than 80μm. The outer surface of all pipes is treated with rust prevention and electrostatic spray epoxy resin coating