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See Chinese contents: TB/T 1632.4-2014 TB/T 1632.4-2014: Welding of rails - Part 4: Gas pressure welding
This Part of TB/T 1632 specifies the requirements, inspection methods and inspection rules for the gas pressure welding of rails. This Part is applicable to the gas pressure welding of 50 kg/m ~ 75 kg/m new rails.
