ASME SEC II A SA-420/SA-420M-2001 Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service ASTM A420/A420M-99
Boiler and Pressure Vessel,Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service ASTM A420/A420M-99
ASME SEC II A SA-420/SA-420M-2001 history
2001ASME SEC II A SA-420/SA-420M-2001 Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service ASTM A420/A420M-99