Sub-drill exclusively represents Global Manufacturing Inc, an industry leading and world renowned US based manufacturer of Drill Stem Valves and Associated Products.


Global Manufacturing

Global Manufacturing specialise in the design and manufacture of a complete range of Drill Stem Valves, developed and engineered using FEA to be the highest quality and most reliable valve on the market.

Precision machined from the highest quality materials, Global Valves are competitively priced and reliable - designed to last the pace offshore in all types of well and operating conditions, including 20k designs for the next generation of drilling.

Sub-drill are the authorized distributor and OEM approved repair centre for Global Manufacturing products in Europe and Africa.

Authorised valve inspection, repair and test

Sub-drill are the approved service facility for Global Manufacturing USA; we inspect, repair and test all types of Top Drive, IBOP’s, Full Open Safety, Kelly, Gray Type and Drop-In Check Valves to OEM standards. Sub-drill provides in-house inspection, repair, refurbishment and pressure testing facilities to the latest industry standards at its Aberdeen Westhill facility.

In addition to our in-house inspection, repair and test facilities, Sub-drill provide the means to test valves offshore using our compact portable Sub-drill DSV™.

For further information, please click here: 'Authorised valve inspection, repair and test facility'

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Additional reading: Drill Stem Valve Services.