... heat conveying equipments6, ASTM A192 For manufacture wall panel,economizer,reheater,superheater and steam pipeline of boilers.Seamless pipe StandardTrademarkChemical componentsMechanical propertyCSiMnP,SCuNiMoCrVTensile ... 8810-530*1.5-36Boiler pipes for refinery,heatexchangeing pipes,seamless steel pipes for pipelineHigh-pressureSeamless pipes for fertilizer making equipment20, 16Mn,Q345GB6479- ...