Welding type high pressure check valve is generated by the pipeline flow of the medium itself force automatically turned on and off, is an automatic valve.

主要用于高压加压的天然气加气系统，防止加压天然气倒流的阀门。焊接式高压单向阀是靠管路中介质本身的流动产生的力而自动开启和关闭的，属于一种自动阀门。

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Any water tank module in the prior art is processed through cutting a piece off the corner of a piece of sheet metal first, and then bending and welding.

公知水箱模块都是预先在板材的角部剪掉一块，然后弯折、焊接。

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When SS systems are fabricated, the welding process destroys the existing passive film and compromises the metal's ability to ward off the corrosive process.

铬镍不锈钢系统建立后，焊接处理会破坏存在的钝化膜，并降低材料抗腐蚀的性能。

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Those measurements are then fired off to legendary bike builder Ted Wojcik, who has been hand-welding and bending award-winning frames for over 25 years.

ENGADGET: Engineering a better bicycle with DBC City Bike Design Alt