不像那些打孔机和打出来的孔屑，垂悬，旋转和起波纹。
Not the ones with hole-punches and their chads, hanging, swinging and dimpled.
采用新型不锈钢波纹管代替壳管式换热器中的直管，对压缩机中间冷却器进行了改造，并进行了实际运行测试和比较分析。
The modification of a compressor intercooler was conducted by replacing the straight tubes of a shell tube heat exchanger with a new type of stainless steel corrugated tubes.
该生产线用于生产PVC、PE原料的单壁波纹管，主要由双（单）螺杆挤出机、成型机、收卷机等主设备组成。
The line produces single-wall corrugated pipe made for PVC or PE material. It is made up twin(single)-screw extrude, forming machine, reeling machine and so on.
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