国产成人在线观看_青青草91视频_日韩一二在线_天天操91_国产精品内射后入合集_四库成人免费视频

Insulation jacket gate valve is mainly used in petroleum, chemical industry, metallurgy, pharmaceutical and other systems. The valve jacket is welded between the two flanges of the valve, and the side and bottom of the valve are equipped with the connecting mouth of the jacket. The jacket can flow through steam or other hot thermal insulation media freely to ensure that the viscous medium can flow through the valve smoothly.

Product Model: BZ41
Nominal diameter: DN40~500mm
Nominal pressure: PN1.0-10.0MPa
Main materials: ZG1Cr189Ti, ZG00Cr18Ni10, ZG1Cr18Ni12MO2Ti, ZG00Cr17Ni14MO2, WCB
Design and Manufacture: GB12234-89
Structure length: GB12221-89
Flange size: JB/T79-94
Inspection and test: GB13927