... 30mmstandardAPI5L,API5CT,ASTM-A106,ASTM-A53,SY5037-2000,GB/T5711.1-1997MaterialX42,X52,X60,X65,X70, ... Q235,Q345,10#,20#,45#,12CrMo,15CrMo,SS304,SS321packagingPainting, Caps, Bevel (beveled ... advance payment(or as your requirement)Payment term T/T ,I/C .now we can accept USANCE ... us wo n favorable reputation from customers. GB/T 8162-1999,ASTM A53-2007 Insulation Steel Pipe,API,PED ...