1.Material:ASTM A106/A53/A179 2.Size:1/2",3/4",1", ... , X60 STK500, or per the buyers demand.2) Standards: BS1387, ASTM A or B, GB/T3081, GB/T9711, API 5L, API ... ,30,40,60,STD XS,80ASTM A106GR.B5.8m,6m,ASTM A53Gr.B5m to 12m randomPipe line3" to 18"SCH20,30 ...