Crossover Subs are used for crossing over from the size of a single connection to the other in the drill string. They are also used for prolonging the life of the more expensive components of the drill string.
The connections of the Subs are available in the following types of configurations:
1. Pin-Pin.
2. Box-Box.
3. Box-Pin.
Features and Benefits:
These Couplings are available in all carbon and exotic grades of steel including stainless and high alloy, and are available as
specified in API or to the thread manufacturer's specs.
Couplings can be supplied with special clearance OD's and beveled should.
One end | Another end | ||||
Size | Thread type | Size | Thread type | ||
2-3/8 | EUE, NUE, NEW VAM box | EUE, NUE, NEW VAM pin | 2-3/8 | EUE, NUE, NEW VAM box | EUE, NUE, NEW VAM pin |
2-7/8 | 2-7/8 | ||||
3-1/2 | 3-1/2 | ||||
4 | 4 | ||||
4-1/2 | 4-1/2 | ||||
Dongying Zhaoxin Industry and Trade Co.,Ltd is an ISO-9001, ISO-14001, OHSAS-18001 certified company and has all the quality systems in place for design, planning,manufacturing and quality monitoring & traceability to ensure that Dongying Zhaoxin Industry and Trade Co.,Ltd products match the highest quality & reliability Standards similar to any International major in this field.
Dongying Zhaoxin Industry and Trade Co.,Ltd with perfect attitude, product and service, is going to make further development together with customers at home and abroad .
