The utility model is a http://www.united-steel.com/product/stainless-steel-products.html used for liquid and gas transmission and wire transmission. It is composed of a stainless steel inner pipe and an outer steel pipe. It does not need any binder. Under normal temperature and pressure, it passes pure The mechanical processing method is to inlay the stainless steel inner tube and close it tightly to the inner wall of the outer steel tube, which includes galvanized steel tube. The utility model has the characteristics of simple and reasonable structure, smooth inner wall, good corrosion resistance, stability, impact resistance and durability, long service life, and will not produce scale and cause secondary pollution in the water supply process. Stainless steel composite steel pipe
It is made of welded steel pipe or seamless steel pipe lined with thin-walled stainless steel pipe. When the outer tube is a welded steel pipe, it shall comply with the standard of GB/T3091-2001; when the outer tube is a seamless steel pipe, it shall comply with the standard of GB/T8163-1999; the grade and chemical composition of the lining stainless steel pipe shall comply with GB12771-2000 and CJ/T151 -The grades and chemical composition of austenitic stainless steels of 0Cr18Ni9 (304), 0Cr18Ni11Ti (316) and 0Cr17Ni12Mo2 (316L) specified in 2001.
