... or Carbon 2.Head mark:OEM,Dia:1/4-1" 3.Processing:Cold &Hot forged Metal joint fittings 1.Material:Stainless Steel or Carbon Steel2 ... .Head mark:OEM 3.Dia:1/4-1" (ANSI),M5 ... ,DIN571,A-10,A-6,ISO4014,ISO4017,etc8.Production Processing:Cold forged or Hot forged9.Surface:Whited,Plain,Zp,Hdg and ...