Pipe Fitting, Close Steel Nipple Fittings, Close Steel Pipe Nipple, NPT Threaded Pipe Nipple, BSP Threaded Pipe Nipple, BSPT Threaded Pipe Nipple, Galvanized Welded Pipe Nipple, Galvanized Pipe Nipple，Black Welded Pipe Nipple, Carbon Steel Nipples Supplier, Stainless Steel Nipple Supplier, Brass Pipe Nipple

Quality Features：1. Each thread of the roll-formed steel pipe nipples is complete, full, smooth, and continuous.2. Each tooth surface is smooth and clean, resembling a grinding surface.3. The tooth shape and taper are 100% satisfactory, and the products are free from any defects.4. The thread size and concentricity at both ends are identical, and the thread quality remains consistent during mass production.Performance Features：1. For galvanized steel pipes, the galvanized layer on the roll-formed pipe threads is generally preserved, preventing rusting of the threads. Therefore, there is no need for on-site anti-rust protection, such as oiling.2. For galvanized steel pipes, rolling preserves their galvanized layer and compresses it with the zinc-iron alloy layer, resulting in enhanced anti-corrosion performance for the threaded section. This enhancement significantly improves the lifespan of the joint, m