31 rotary drilling rig, 280 pairs of steel wire rope, how long?
The main varieties of steel wire rope with manganese phosphating coating of steel wire rope, galvanized steel wire, stainless steel wire rope and coated steel wire rope, atmospheric environment, manganese phosphating coating can improve the wear resistance and corrosion resistance on the surface of the wire, inhibit the occurrence of fretting fatigue, and large increase in the fatigue life of wire rope, for reference only
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