Union Joint

  • Socket Welding Union Joint
  • Screwed Union Joint

Union Joint

Our union joint is designed and manufactured for the joining of ends of lengths of installed pipes where rotation of neither length is possible. It is composed of a union head having a male screw thread, a union tail piece and a union nut.


CLASS 3000

Carbon Steel: ASTM/ASME A105, ASTM/ASME A516 Grade 55-60-65-70
Alloy Steel: ASTM/ASME A182 F1-F12-F11-F22-F5-F9-F91-F911-F92
Stainless Steel: ASTM/ASME A182 F304-F304H-F304L-F304N-F304LN F316-F316H-F316L-F316N-F316LN F321-F321H F347-F347H, ASTM/ASME A182 F51-F52-F53-F54-F55-F60-F61
Low-Temperature Steel: ASTM/ASME A522, ASTM/ASME A707 Grade L1-L2-L3-L4-L5-L6-L7-L8
High-Strength Steel: ASTM/ASME A694 F42-F46-F48-F50-F52-F56-F60-F65-F70

MSS SP 83-2006

Industrial Processes
Die forging, Machining

Industries Served
Electrical power, petroleum, natural gas, chemical, shipbuilding, heating, papermaking, metallurgy

Ahad is a professional union joint manufacturer in China. Apart from the production of union joint, we also produce other forged fittings like nipple, socket weld cap, socket weld coupling and threaded elbow etc. Thanks to the reliable quality and competitive price, the union joint is ISO 9000, Pressure Equipment Directive 97/23/EC (PED 97/23/EC), AD2000 Merkblatt W0, and API compliant. The product is successfully exported to Italy, Germany, Spain, France, Russia, USA, Brazil, Iran, India, etc.
If you have any queries, please feel free to contact us!

Inquiry Form