... ,TP310S,TP316L TP321 TP202h OD: 6mm-630mm;1/8"-36" Stainless steel pipe: MaterialsTP304,TP304L,TP310S,TP316L TP321 TP202hFinish2B polish,colour,and ... ,GB/T14976-2002 GB13296-91usageThe structure tubes and drainpipe in industrial fieldBuilding materials ,which including elevators ,inside and outside decoration materials ...