... 3.Bullet End Plug,forged pipe fittings 1.Material : Stainless steel 304, 3162. Surface: mirror polish, high polished3.Name ... .Process: cast, machining, turning, milling, drilling, thread cutting.Surface treatment: glass rays electrolytic polishing, coating, varnishing, bromzing. Passivating ... impact tenacity, x-ray,metallograph.Quality control: According to ISO 9001 2001 Bullet End Plug,pipe fitting