... pipeit is used in petroleum,chemical,electric power,boiler etc as they Resistance to high temperature, low temperature resistance,Corrosion ... temperatureApply to-45 °C ~ 195 °C level-low temperature and low pressure vessel pipe heat exchanger pipelineASTM A333A333 GR6steel ... X56,X60,X65,X70,X80ERW STEEL PIPEUsed in general structure stents, low voltage liquid transportation, etcGB/T13793-1992GB3091- ...