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Available tool joint size ranging from NC26 to 6-5/8FH, made of 4137M steel or customer required material. By special heat treatment, the material have high strength, excellent hardenability and toughness, suitable for long time use. Copper plating or Phosphating surface treatment provide good thread anti-galling properties, meet SY/T5290 and API Spec 5DP latest edition requirements.
drill pipe tool joint
