久久亚洲av秘 无码久久_91尤物在线精品无码中文_国产A一级毛片高清视频校长完整片_欧美性爱 加勒比_精品一区二区三区免费毛片_国产精品日韩欧美在线播放_97人妻无码专区_国产羞羞网站_亚洲婷婷久久综合_免费看精品老年人毛片

CN EN
(0)15021555579
qrCode

新聞中心

NEWS



當(dāng)前的位置:新聞中心 >> 技術(shù)知識(shí)

With double sleeve type spherical diffusion welded ball valve

發(fā)布時(shí)間:2023/12/29


Features:

According to API607 / BS6755 norms, the use of fire in the valve site, the secondary seal made of non-metallic materials in the ring decomposition or destruction under high temperature, then the primary metal seal can quickly close the ball Play a seal. Unique double-stage sealing seat structure design to ensure the reliability of the valve seat fire.

下一條:焊接鋼制球閥