Class 300-600: Fully-encased spiral wound graphite-filled stainless steel gasket.

600磅级：全封闭螺旋缠绕石墨填充不锈钢密封垫。

youdao

Class 300-600: Fully-encased spiral wound graphite-filled stainless steel gasket.

600磅级：全封闭螺旋缠绕石墨填充不锈钢密封垫。

youdao