... /2"-72" Thickness: SCH20-XXS Material: carbon steel, alloy steel,stainless stee Size:from 1/2" to 72" Thickness:SCH20, SCH30, SCH40 ... , STD, SCH80, SCH100. SCH120, SCH160. XXSMaterial:carbon steel, alloy steel,stainless steelQualification: ISO9001, API, CE,Packing:wooden cases & palletsSpecial design available ...