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Cross-Over Sub

  • China China  
  • Last Updated:
    Posted on: 29 Apr 2024

Buyer Information

RFQ Details

Cross-Over Sub


Cross-over sub acts for conversion and connection of drill stem component in petroleum , natural gas and geology drilling ***** is used mainly for connecting of upper drill tools and lower drill tools during drilling operations.

The cross over sub in 4 types of main structure


Sort Description Upper Connection Part Lower Connection Part Type
1 Kelly cross-over sub Kelly Drill pipe A or B
2 Drill pipe cross-over sub Drill pipe Drill pipe A or B
3 Interim cross-over sub Drill pipe Drill collar A or B
4 Drill collar cross-over sub Drill collar Drill collar A or B
5 Drill bit cross-over sub Drill collar Drill bit A or B
6 Swivel cross-over sub Swivel lower sub Kelly C
7 Fishing cross-over sub Kelly Drill pipe C
Drill pipe Fishing tools C

Type A stand for same diameter :one crossover sub has one size (D)on O.D., code A.
Type B stands for reduce type:one crossover sub has two sizes (D1, D2) on O.D., code B.
Type C is left hand thread type:the connection thread is left hand type, code C.


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