04-23
2019
Briefly explain the working principle, advantages and disadvantages and precautions of gate valves
The opening and closing part of the gate valve is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid.
04-23
2019
Turkey's seamless steel pipe imports fell 25% in November 2011
According to the data provided by TUIK, Turkey's data and statistics bureau, in November 2011,
Engaged in the production of ductile cast iron and gray cast iron
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