CROSSOVER SUB

E-MAIL: irislea@sj-drilling.com;irislea@163.com

CROSSOVER SUB 

SAVER SUB

SHUANGJIA Saver sub is used to extend the life of the Kelly by taking the connection wear each time it is make up to a drill stem component. The saver sub connection is sacrificed because it can be easily repaired or inexpensively replaced. The saver sub can be equipped with a rubber protector to reduce BOP equipment and casing wear resulting from contact damage with a lower Kelly connection.

/SPECIFICATIONS: All sizes

STRAIGHT OD SUB

SHUANGJIA Straight OD sub is use d to connect drill stem members that have a similar outside diameter. The drill bit, downhole tools, heavy weight drill pipe and drill piepe can be crossed over using a straight OD sub.

/SPECIFICATIONS: All sizes 

REDUCED SECTION SUB

SHUANGJIA Section sub is used to connect drill stem members that have different diameters that warrant the cross-sectional change necessary to accommodate different connections. The sub would be used to crossover large OD drilling tools or tapered drill collar string .

/SPECIFICATIONS: All sizes

SPECIFICATIONS：CONNECTING DRILL PIPE

SPECIFICATIONS：CONNECTING DRILL COLLAR

SPECIFICATIONS：CONNECTING KELLY AND SWIVEL

HEILONGJIANG NORTH SHUANGJIA DRILLING TOOLS CO., LTD.

Iris lea

Sales Manager

International Marketing Dept.

Add: No.56, Xingye Road, Yangming District，Mudanjiang City, Heilongjiang P.R, China     
E-mail:irislea@163.com；irislea@sj-drilling.com
Website: http://www.sj-drilling.com

Skype:irislea-sj-drilling

Wechat:irislea

WhatsApp:13604531257
Tel:0086-453-6293088