... 304, 316 2. mirror polish, high polished 3.Bullet End Plug,forged pipe fittings 1.Material : Stainless steel 304 ... , 3162. Surface: mirror polish, high polished3.Name:Bullet End Plug,forged pipe fittings4.specification:7/8'' Casting: investment ... process complex shell process.Materials: stainless steel ,carbon steel ,alloy steel, heat resistant steel ,tool steel ,brass and aluminum ...