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tianhe petroleum group

Products >> Cross-over sub

Cross-over sub

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Description
Product Name: Cross-over sub
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Cross-over sub acts for conversion and connection of drill stem component in petroleum ,natural gas and geology drilling work.It 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.

Contact Us
Company: tianhe petroleum group
Contact: Mr. Dong Yong
Address: 69 ChaoYang Road, the Fortune Center, Ste. 1-801,ChaoYang, BeiJing, 100025 China
Postcode: 100025
Tel: 86-10-85787096
Fax: 86-10-85787238
E-mail:         


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Tel : 86-10-85787096 Fax : 86-10-85787238
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