
High-Quality Long Neck Welding Flange for Pipe Connections. Wide Material Selection: Carbon steel, stainless steel, alloy steel, duplex stainless steel, and nickel-based alloys available. Customization Capabilities: Full customization, minor customization, and design-based customization options available. Extensive Size Range: Available in sizes from DN15 to DN4000mm to fit various pipe connection needs. Multiple Sealing Surfaces: Options include RF, flat, annular joint, large/small convex concave, and tongue and groove. High Production Capacity: Annual production capacity exceeds 24,000 tons of flanges and forgings. Strict Quality Control: 100% visual inspection, ultrasonic testing, and PMI chemical analysis on finished products. Global Shipping Options: Sea and air transport available from Tianjin or Shanghai ports with custom packaging.