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162018-06Recently, the Ministry of Industry and Information Technology released Document No. 23 of 2018, approving 594 industry standards and 63 industrial measurement technical specifications. Among them, the four valve industry...
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062018-06First, DN (Nominal Diameter) means the nominal diameter of the pipe, which is the average of the outside diameter and inside diameter. The value of DN = value of De - 0.5 * tube wall thickness. Note: This is ...
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302018-05A) Direction and location Many valves have directionality, such as cut-off valves, throttle valves, pressure reducing valves, check valves, etc. If they are reversed, they will affect the use effect and life...
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232018-05In the recent survey and research activities conducted by the Municipal Science and Technology Bureau, the issue of scientific and technological innovation of enterprises has become the focus of researchers. This year, the Municipal Science and ...
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192018-05[China Chemical Instrument Network Policy and Regulations] The construction of the automatic surface water monitoring station is still underway. However, the groundwater monitoring project has reached an important stage of maintenance. According...
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082018-05[China Chemical Instrument Network Policy and Regulations] The construction of the automatic surface water monitoring station is still underway. However, the groundwater monitoring project has reached an important stage of maintenance. According...
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052018-05How to connect the entire valve and pipeline or equipment, this problem can not be ignored, because the valve running, running, drip, leakage phenomenon, the vast majority occurred here.
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282018-04Liu Zhenjiang, secretary of the China Iron and Steel Association Party Committee and Secretary General, said at the press conference of the China Steel ...
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202018-04The principle of maintenance during the operation of the valve is as follows: 1 Keep the outside of the valve and the active part clean and protect the integrity of the valve paint. The surface of the valve, trapezoidal ...
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122018-04On the 28 day, according to the official disclosure of the Lanzhou University of Technology, the first domestic 600 ℃ high temperature liquid lead bismuth alloy transmission shielding pump made by the...
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