JIS B 2311　　
　一般配管用鋼製突合せ溶接式管継手

JIS B 2312 　　
　配管用鋼製突合せ溶接式管継手

JIS B 2313　　
　配管用鋼板製突合せ溶接式管継手

ASTM A 234　
　 Standard Specification for Piping Fittings of Wrought
​　 Carbon and Alloy Steel for Moderate and Elevated Temperatures

ASTM A 403   
　Standard Specification for Wrought Austenitic Steel Piping Fittings

ASTM A 420   
　Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low=Temperature Service 

ASME B16.9
    Factory-Made Wrought Steel Buttwelding Fittings

ASME B16.25
   Buttwelding Ends

ASME B16.28 
　 Wrought Steel Buttwelding Short Radius Elbows and Returns

MSS SP-43       
　Wrought Stainless Steel Buttwelding Fittings