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The butterfly plate must be in the closed position during installation to ensure that the butterfly plate does not collide with the pipe flange.

The role, selection and maintenance of water meters in irrigation…

Internal leakage in DN50 electric control valves is a common…

Seamless steel pipes play an important role in the national economy and are widely used in various sectors such as petroleum, chemical industry, boilers, power stations, ships, machinery manufacturing, automobiles, aviation, aerospace, energy, geology, construction and military industry.