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Valve trapezoidal threads, stem nut and sliding parts of the bearing, bearing parts, gears and worm gears, meshin [Read More]

Pneumatic ball valve is mainly used to cut off or connect the medium in the pipeline It can also be used for [Read More]

The sealing surface is the most critical working surface of the valve The quality of the sealing surface direct [Read More]

As the temperature in the north continues to drop, local governments have begun to heat up and all kinds of co [Read More]

A small hole is drilled in the compression chamber of the oil seal mechanical vacuum pump, and a regulating val [Read More]

Evacuation is an indispensable and important step before filling refrigerants in the production or maintenance of [Read More]

The welding technology is mainly applied to the metal base metal Commonly used arc welding, argon arc welding, [Read More]

During the welding and cutting operations, the articles shall be cleaned Attention shall be paid to the trenches [Read More]

The welding current in the straight seam steel pipe swing welding is slightly larger than the traditional welding [Read More]

In the high-temperature vacuum brazing furnace, the metal honeycomb carrier of the three-way catalytic converter fo [Read More]