Product Features

• One-piece spun and pressed forming creates a smooth dome transition with strong pressure-bearing sealing performance.
• Carbon steel construction provides uniform wall thickness, stable high-pressure resistance, and impact resistance.
• Standard welding bevels allow direct butt welding to pipes for leak-resistant end closure.
• Manufactured to common pipe-fitting standards for accurate dimensions and broad industrial pipeline compatibility.

Common Specifications

• Material Options: China 20# carbon steel, Q235R, Q355; ASTM A234 WPB/A420 WPL6; EN P265GH/16Mo3; JIS STPG370/SPV235; GOST St20/09G2S/15X5M
• Standards: GB/T 12459, GB/T 13401, GB/T 14383; ASME B16.9/B16.11/MSS SP-75; EN 10253-2; JIS B2312/B2311; GOST 17393/GOST 33295/GOST 12876
• Size Range: DN25-DN1200, with wall thickness matched to the connected pipe
• Process: Spun or pressed forming with black anti-corrosion paint treatment
• Standard Options: Chinese GB/T and ASME B16.9 specifications available

Applications

• District heating and steam/hot-water pipeline end closure
• Oil, gas, and general chemical pipeline end sealing
• Municipal and plant water-supply or drainage pipe closures
• Pressure-vessel, tank, and equipment end-sealing components