... -temperature resistant,Low temperature-resistant, corrosion-resistant Seamless pipe for Petroleum, chemical, electric power,Boiler industry16-824 ... pipe10-530×1.5-36 high-pressure seamless pipe for chemical fertilizer equipment 20,16Mn,Q345GB6479-2000Fertilizer ... power, boilers, drinking water, machinery, military industryDN80-1500-square pipeQ195,Q235,Q345,20#GB/T6278-2002 Structure, decoration, ...