日韩欧美一二区_亚洲无码 鲁 鲁 更健康_国产美女一区三区_中文欧美日韩无线码_中文字幕亚洲激情_国产成人精品男人的天堂538_毛片影院在线观看_很黄很湿18以免费视频_国产乱子伦精品中文_过程网站在线观看黄

H44H/W swing check valve is designed and manufactured strictly according to GB12236 standard. The pin shaft is connected with the valve disc with the built-in structure, with excellent performance and more reliable sealing.Products are widely used in petroleum, chemical, pharmaceutical, electric power and other working conditions of the pipeline.

Product model: H44H/W
Nominal diameter: DN50 ~ 800mm
Pressure range: PN1.6~16.0MPa
Operating temperature: -196℃ ~ +550℃
Main material: carbon steel, stainless steel, alloy steel
Suitable medium: water, steam, oil, nitric acid, acetic acid
Design and manufacture: GB12236
Length of structure: GB12221
Connection flange: JB/T79-1994
Testing and inspection: JB/T9092-1999