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24

2018-11

【Technical article】 Cause analysis of defects in valve casting during production

1. The stomataThis is a small cavity formed by the gas that cannot be escaped from the metal during solidification. Its inner wall is smooth and contains gas, and it has a high reflectivity to ultrasonic wave.
17

2018-11

【Industry trends】 Serious leakage valve brings back to life

On the morning of November 10, several young people wearing red overalls were sweating around a replaced valve on the YT2-10H well site of the second production area of No. 1 Oil Production Plant of Northwest Oilfield.
10

2018-11

【Industry trends】 Hualong No. 1 serious accident relief valve and other important valves passed the national appraisal smoothly

Recently, the China Machinery Industry Federation and the China General Machinery Industry Association organized in Dalian a swing-start type of pressure relief valve with operation device for serious accidents...
03

2018-11

【Industry trends】 2018 the Sixth China International valve technology development forum was held in Shanghai.

On the afternoon of October 26, the 6th China International Valve Technology Development Forum was held in Conference Room 1 of Shanghai World Expo Exhibition Hall.
27

2018-10

【Industry trends】 The 2nd China Pump and Valve Town Exhibition and the 13th Wenzhou (Golden Eagle) Pump and Valve Exposition were grandly held.

Autumn is the golden season. On this harvest-filled day, we are honored to have the opportunity to meet and witness the 2nd China Pump and Valve Township Exposition and the 13th Wenzhou (Golden Eagle) Pump...
20

2018-10

【Industry trends】 Henan oilfield invented small tools to solve the problem of gate falling off

"Since the invention of Zhao technicians, the gate to take out the device, take out the gate has not been difficult, it is really effective and safe and labor-saving, an annual effect of more than 35,000 yuan. On October 11, Xiao Xingwen, an...
13

2018-10

【Industry trends】 A valve company in Nanan forged 50 7 inspection reports and was fined for investigation and punishment.

The forged product inspection report is also stamped with the company seal to provide to the customer. Recently, the Nan'an Market Supervision and Administration Bureau investigated...
06

2018-10

【Industry trends】 China Valve Association signed a business cooperation agreement with Sinopec Nanjing Valve Supply and Reserve Center

In order to promote the healthy development of the valve industry in a global competitive market environment and assist the supply side reform, China General Machinery Industry ...
29

2018-09

【Technical article】 Four major technical requirements of modern coal chemical industry for valve products

Direct liquefaction is also called hydroliquefaction. In the hydrogenation process, the valve, pipeline and related equipment are in the high temperature and high pressure hydrogen gas, hydrogen damage is a very big problem. When high 。。。
23

2018-09

【Industry trends】 The principle, installation and maintenance of pneumatic control valve is enough.

Pneumatic control valve is one of the industrial process control instruments widely used in petroleum, chemical, electric power, metallurgy and other industrial enterprises. Regulating ...

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