摸进她的内裤里疯狂揉她动图视频,亚洲人成网亚洲欧洲无码久久,久久婷婷五月综合97色一本一本,久久久精品人妻一区亚美研究所

Welcome to Jiaozuo Libo Light Alloy Co., Ltd.

Aluminum alloy sacrificial anode

magnesium anode, zinc anode

Telephone:

0391-7588881 +8618739187123

Jiaozuo Libo Light Alloy Co., Ltd.

News

News

Contact

Phone:18739187123

hotline:0391-7588881

E-mail:970512272@qq.com

Address:Wuzhi County, Jiaozuo City, China

Q & A

What problems should be paid attention to when installing insulation joints

  • Author:Libo
  • Source:wkmeufh.cn
  • Date:2021-06-11
  • Click:0

Precautions for installation of insulation joints:

1. No dead mouth to be welded is allowed within 50m from the insulation joint installation place.

2. When there is a dead mouth of the pipeline within 200m of the insulation joint installation, the welding of the dead mouth should be carried out in the local uniform daily temperature (±5℃).

3. After the insulation joint is connected with the pipeline, it is not allowed to lift the pipeline within 5m to avoid damage to the insulation joint.

4. When the insulation joint is installed in the gas medium pipeline, it shall not be installed in the low-lying place buried in the pipeline.

5. The lifting speed of the insulation joint shall not be greater than 0.5mpa per minute.

6. After the insulation joint is connected with the pipeline, it should be corroded according to the requirements of the pipeline, and the surface temperature of the insulation joint is not allowed to be higher than 100℃ during the anticorrosion course.

7, before installation, only insulation function test (500V meter resistance should be greater than 2M ω and not lower than the marked data, should not be repeated hydraulic test).

8. Insulation joints shall not be used as thermal stress deformation compensation.


Online
聯(lián)系方式

熱線電話

18739187123

上班時(shí)間

周一到周五

公司電話

0391-7588881