GBI was founded in 1986 by Gert Bahlo. Our quality management system conforms to API Specification Q1 and GBI holds API Monogram License Number 6A-0248. 


Our state of the art machine shop manufactures and assembles wellhead components such as casing hangers, tubing hangers, primary & secondary seals, back pressure/two-way check valves and lubricators. We also offer machining services as well as complete turn-key manufacturing and are capable of hydro-testing assemblies up to 30,000psi in house.


Our 60,000 square foot manufacturing and office facility is located on 3 acres in Pearland, TX which is just south of Houston. We currently have 23 Mazak machines, 1 robotic painting cell, 6 saws, 1 manual lathe and a 30,000psi Hydro-tester.


Our products are being used by major as well as small wellhead manufacturers and repair facilities worldwide.

Machining Capabilities


This site was last updated on 10/9/2020