1)size:1/2"to 72" 2)material:carbon steel,stainless steel,etc 3)standard:ANSI B16.5 4)WT:#150-#2500 ... B16.47, ASME B16.36,DIN2505,EtcMaterialCarbon steel(ASTM A105,Q235,A350LF2,A350LF3,Etc)Stainless steel(ASTM A182 F304, F304L,F316,F316L,F321 ... design avaliable according to requirement2,all the production process are made under the ISO9001:2000 strictly3, surface treatment:anti-corrosive oil ...