In this case, I found some of the 6 exhaust tubing that we use on the little 3306 series Caterpillar engines.
在这种情况下，我发现一些6排气管，我们使用的小毛虫3306系列引擎。
These products are used for cutting of hypodermic needles, watch parts, exhaust convertor tubing and other stainless steel or some nonferrous material.
该产品主要用于医用针头钟表配件汽车尾气管及其它一些不锈钢非金属材料的切割。
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