According to the new standard ASME sa249, ASTM A269 / a270-s2, puretube BPE pipeline is aimed at the equipment application of biopharmaceutical process. Material TP316L high sulfur material, the content of S element is 0.005% - 0.017%.
The main supply types of puretube were sf0 (BA, ID RA < 0.8um, 32ra), SF1 (Ba + ID RA < 0.5um, 20ra), SF4 (EP, ID RA < 0.25um, 10Ra).