我厂在铺设一条近百米长的输酒管道时,为便于管道经常拆洗,采用铜接头连接。输酒管材料为不锈钢。我们采用氧乙炔焊焊接了不锈钢管与铜接头。通过对几个接头的检查,焊缝成形美观光滑,未发现表面气孔等焊接缺陷。通过气、水压试检(要求耐压5公斤/厘米~2),合格率达100％。焊前先将不锈钢管插入铜接头内(图1), I plant in the laying of a nearly 100-meter long wine pipeline, in order to facilitate the regular demolition of the pipeline, the use of copper joints. Liquor is stainless steel. We use oxyacetylene welded stainless steel pipe and copper fittings. Through the inspection of several joints, weld formation beautiful and smooth, no surface porosity and other welding defects found. Passed gas, hydraulic pressure test (required pressure 5 kg / cm ~ 2), pass rate of 100%. Before welding the stainless steel pipe into the copper connector (Figure 1)