... kinds of stainless steel pipe. The products are according to the standards such as GB,ASTM,API 5L,API ... 5L. We can supply all kinds of stainless steel pipe. The products ... are according to the standards such as GB, ASTM, ,API 5L, ... more than 5mm3: type: stainless steel pipe4. standard: GB, ASTM, API 5L, API 5CT, DIN, JIS.