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(Total 2 Products for Double Shoulder Drill Pipe Joint)
Double Shoulder Drill Pipe Joint
Double Shoulder Drill Pipe Joint Product Features Double shoulder desig
Welding Drill Friction Adapter
Friction welding drill adapter NC26 Product Description Friction welding drill pipe adopts thermal refining to superior alloy steel 35CrMo or 4137H that`s after thread hardening treatment and phosphating to better anti
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