1)size:1/2"to 72" 2)material:carbon steel,stainless steel,etc 3)standard:ANSI B16.5 4)WT:#150-#2500 ... ,F316L,F321,F347,F310F44F51,A276 S31803, A182, F43,Etc)Alloy steel(ASTM A694 F42,F46,F52,F56,F60,F65,F70, A182 ... :2000 strictly3, surface treatment:anti-corrosive oil,black painted,as per customer's request.4,high-temperature resistant with black painting.5,marking ...