黄片毛片在线看,97人人模人人爽人人少妇,色成人av

中文|English

Your Current Position: NEWS CENTER

04

2020-12

【Industry trends】 New regulation | "approval rules for special equipment inspection institutions (draft for comment)" was released

Recently, the Official website of the State Administration for Market Regulation issued an announcement, in order to further standardize the approval work of special equipment inspection institutions...
27

2020-11

【Technical article】 What does the valve arrow on the body mean?

What does the valve arrow on the body mean?The arrow on the body indicates the recommended pressure direction of the valve, not the direction of medium flow...
20

2020-11

【Industry trends】 Northwest oil field special tools to solve the gas valve disassembly problem

"Master Huang, your special tool for air valve is so easy to use. I am replacing a valve plate and buffer plate now. It only takes 5 minutes."November 12, after replacing the valve plate and buffer plate of an air valve of Compressor no. 4
13

2020-11

【Technical article】 How to maintain the pneumatic ball valve

The use of pneumatic ball valves requires good maintenance of these equipment.It is also a very complicated job to maintain the equipment.It's a lot of work...
06

2020-11

【Industry trends】 The 18 valve industry standards will be implemented as of January 1, 2021

According to the Announcement of the Ministry of Industry and Information Technology of the People's Republic of China No. 15 in 2020, the Ministry of Industry and Information Technology of the People's Republic of China has approved and...
30

2020-10

【Technical article】 What should be avoided when installing the valve?

Valve is the most common equipment in chemical enterprises. It seems easy to install the valve, but if it is not executed according to the relevant technology, safety accidents will occur
23

2020-10

【Industry trends】 Wenzhou Yongjia to build a modern manufacturing industry cluster of 100 billion

China's valve industry first draft of the new international standard ISO 22153:2020 "Industrial valve electric device General requirements" has been officially released and implemented...
16

2020-10

【Technical article】 What are the advantages of low temperature gate valves in service?

The reason why the valve has a good sealing effect in the process of use, is because it needs effective transport and contact medium in the process of use, low temperature gate valve is also widely used in the current market
09

2020-10

【Industry trends】 The diversified utilization of clean power generation has embarked on the path of nuclear energy with Chinese characteristics

China's independent nuclear power technology brand and the world's advanced third-generation nuclear power model "Guohe No.1" in Shanghai.
25

2020-09

【Technical article】 Chemical valve selection

Corrosion has long been one of the most troublesome hazards of chemical equipment. A slight mistake can damage the equipment, or even cause accidents or disasters.

First <Previous ... 16 17 18 19 20 21 22 23 24 ... Next> End

TOP

QQ客服

+86-027-84805675

1976tina@163.com

欧美性高清bbbbbbxxxxx_最近更新中文字幕在线_亚洲人a成www在线影院_欧美成人久久_国产黄色观看_日韩精品3