Proprietary Connections—In addition to a strong tubular inventory position, GB Tubulars developed several specialty casing connections for a variety of services. GB Tubulars Drilling with Casing Connections are semi-premium connections used for high torque and fatigue resistant applications. These innovative coupled connections are suitable for all types of service; Running (standard static casing applications), Rotating (to aid string advancement), Drilling (Drilling with Casing/Drilling with Liners) and Driving. With an inventory of over 20,000 couplings and an average seven day threading turn around time, GB strives to be the industry leader in service and quality.


GB CD Butt

GB Casing Drilling is used for conventional running, rotating to aid in string advancement, drilling with casing/liners, or driving. Used on lighter wall casing.

GB CDE Butt

GB Casing Drilling Enhanced is used for conventional running, rotating to aid in string advancement, drilling with casing/liners, or driving. Internal shoulder for heavier wall pipe.

GB CD 3P

GB Casing Drilling 3 Pitch, Large OD, Deep Stab, No Cross Thread Connection. This connection has high torque capacity and is suitable for circulating and light duty rotation to aid target achievement. It is used for lighter wall casing.

GB CDE 3P

GB Casing Drilling Enhanced 3 Pitch, Large OD, Deep Stab. No Cross Thread Connection. Used for conventional running, rotating to aid in string advancement, drilling with casing/liners, or driving. Internal shoulder for heavier wall pipe.

GB 3P (Original Design)

GB 3 Pitch, Large OD, Deep Stab, No Cross Thread Connection. This connection has high torque capacity and is suitable for circulating and light duty rotation to aid target achievement. Internal shoulder for heavier wall casing.

GB WS/GB HB Butt

GB Casing Drilling Wear Sleeve/Hard Band is an integral sacrificial sleeve on the leading edge and critical areas on the GB CD connection to minimize wear during drilling operations. In more abrasive environments the sleeve can also be hard faced.

GB WSE/GB HBE Butt

GB Casing Drilling Wear Sleeve/Hard Band is an integral sacrificial sleeve on the leading edge and critical areas on the GB CDE connection to minimize wear during drilling operations. In more abrasive environments the sleeve can also be hard faced.

GB WS 3P/GB HB 3P

GB Casing Drilling Wear Sleeve/Hard Band is an integral sacrificial sleeve on the leading edge and critical areas on the GB CD 3P connection to minimize wear during drilling operations. In more abrasive environments the sleeve can also be hard faced.

GB WSE 3P/GB HBE 3P

GB Casing Drilling Wear Sleeve/Hard Band is an integral sacrificial sleeve on the leading edge and critical areas on the GB CDE 3P connection to minimize wear during drilling operations. In more abrasive environments the sleeve can also be hard faced.

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