... pipe.Carbon steel,Quality carbon steel,Nodular cast iron,Stainless steel.Q235-A,20,35,45,QT400-15,0cr18Ni9, ... 1992Bolt,Stud,Power Screw,Nut.Carbon steel,Quality carbon steel,stainless steelQ235A,35,45,00Cr17Ni14Mo2,1Cr18Ni10TiGB/T4237-1992GB/T700-1998GB/ ... /T3093-1988raw oil,lubricating oil,product oilG70HT/T3092-1988Fuel gas,thermal gasFN70HG/T3089-2001fuel oilWBHG/T3097-2006hot drinkable water ...