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Group of ASTM standards for welded pipe fittings

Certain ASTM standard specifications were given to welded pipe fittings recently covering various aspects of fittings for high-temperature service, special applications like fire protection use and other ordinary services. These standards are given in the table below:

A234 A234/A234M-99 Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
A403 A403/A403M-99a Wrought Austenitic Stainless Steel Piping Fittings
A420 A420/A420M-99 Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service
A774 A774/A774M-98 As-Welded Wrought Austenitic Stainless Steel Fittings for General Corrosive Service at Low and Moderate Temperatures