... this flux is suitable for welding of gascylinders , membrane water-cooled wall of boilers, etc welding flux ZT.HJ350HJ350(Medium Manganese-oxide ... H08MnA, H10Mn2,H08Mn2Mo wires, this flux is suitable for welding of low alloy steel (such as 16Mn,15MnVN,15MnN)important ... pressure vessel. The14X 80 mesh size is recommended for welding of thin plates with small diameter wires. GUIDELINES FOR USAGE: ...