Cnc precision machining brass fitting/high quality brass compression pipe fitting Sizes: according to customers' drawings or samples. Process: cnc machining, turning, milling, stamping, welding, wire injection, cutting, etc. Coupling plug: valve plug can automatically close to prevent leakage when couplings are disconnected or open to let fluid get through when couplings are connected. Key parts are induction hardened for a better durability. Advantages: 1. Iso9001:2008 and ts16949 certificated. 2. Oem available. 3. More than ten years of sales and manufacture experience. 4.100% test for air pressure and inspection for product appearance before shipment. 5. Long lifespan, competitive price 6. Good payment term. 7. Fast delivery. 8.Thread standard: bspp, bspt, npt, metric etc. Our products are exported to more than 30 countries in the whole world.