全焊接阀体的球阀，可以直埋于地下，使阀门内件不受侵蚀，最高使用寿命可达30年，是石油、天然气管线最理想的阀门。

Full welding of the ball valve body can be directly buried in the ground, so that in case the valve from erosion, the maximum service life of up to 30 years, oil, natural gas pipeline valve ideal.

youdao

一件式衬垫的结实耐用的氨基甲酸乙酯阀座部分也覆盖了阀门内部表面。

The robust urethane seat portion of the one-piece liner covers the interior of the valve.

youdao