1.ANSI;DIN;SAE;BS and JISC 2.Type :Caps ,nuts 3.10 years OEM experience 4.ISO 9001 .Our VisionTo ... Compression Male/Female Unions, Tees, Elbows, Connectors, Adapters, Nuts, Sleeve, etc.2. Raw Material: Brass 58-3, C37700, lead-free, or according ... roll out of the factory.Quality control begins when the raw materials enter the factory premises then to the production floors ...