★GB H08A JIS W11 AWS El8 Welding wire is of copper plated carbon structure. It is widely used fot automatic hidden arc welding. It is of excellent welding performance. Togeather with sintering flux, such as SJ501、SJ401、SJ301, or melting flux, such as HJ430、Hj431、 HJ433, it is used to weld low-carbon steel and low-alloy steel, for instance, the automatic hidden arc welding. ★GB H08MnA JIS W21 AWS Em12 It is of copper plated carbon sructure. With flux for hidden arc welding, the welding metal is of excellent mechanical property, for instance, the automatic hidden arc welding of 16Mn boiler and pressure vessel. ★GB H10Mn2 JIS W41 AWS Eh14 　Welding wire is of high-manganese structure, widely used for automatic hidden arc welding. With sintering flux and melting flux, it is used to weld lo-cabon steel and low-alloy steel. ★GB H10MnSi AWS Em13 　The welding wire is used for hidden arc welding. With propriate flux, fine welding metal is available, of high efficiency and stable quality. It is applicable for carbon and low-alloy steel structure, such as, broiler, chemical vessel, nuclear power station containor, bridge, ship, etc.