一区二区吉沢明步免费视频 ,丰满少妇被猛烈进入试看,亚洲永久在线,国产aⅴ麻豆系列尤物,TUBE44VIDEOS欧美,伊人av一区二区无码,又长又大又粗又硬3p免费视频,东京热制服丝袜无码专区,中文字幕无码av专区久久,狠狠色丁香婷婷综合尤物

進(jìn)口瑞典伊薩OK AutrodCuSi3/ERCuSi-A硅青銅合金焊絲12.5公斤/盤

ESAB OK Autrod 19.30 is a solid copper wire for the GMAW joining of copper-zinc alloys and low-alloyed copper and for the GMAW brazing of zinc-coated steel sheets.It is alloyed with silicon and manganese and has good flow properties and wear resistance. This alloy is widely used in the joining of zinc-coated steel sheets in car body production, as well as for overlay welding on low- and non-alloyed steels and cast iron. Pulsed or specialised GMAW is recommended.This wire is normally welded with pure Ar as the shielding gas,however,for GMAW brazing the addition of 1% O2  improves the brazing properties.