... mirror polish, high polished3.Name:Bullet End Plug,forged pipe fittings4.specification:7/8'' Casting: investment casting ,precision ... ,alloy steel, heat resistant steel ,tool steel ,brass and aluminum ,according to DIN ,EN, ASTM, BS,JCSI. ... Piece numbers: small, medium and large series.Process: cast, machining, turning, milling, drilling, ... to ISO 9001 2001 Bullet End Plug,pipe fitting