We specialize in deep hole machining services. Check our page on Deep Hole Boring for additional capacities.

  • Drilling provides a given hole size with a single machining pass. It may be through the part, or partially through (blind). We provide drilling services for holes ranging from 1.180″ to 6.25″ diameter and have trepanning capabilities for very large ID’s. Grand Valley can machine your flat bottom or radius blind holes as well.
  • Grand Valley provides machining services to a wide variety of markets including Steel, Paper, Plastic, Aerospace, Ground Transportation, Construction Equipment, Nuclear, Railroad, Propulsion, Military, and the Oil and Gas Industries.
  • Grand Valley excels in production work, with 125,000 sq feet of storage capacity under roof for incoming material and finished parts awaiting shipment. We also have computerized production control, to monitor and control the flow of your material through the shop.

If it looks like it doesn’t fit, call to speak with one of our technical experts.

Facility Capabilities at a Glance

Small Shaft Buildings 51 & 52Medium Shaft Plant
Outside Diameter2.00″ – 24.00″ OD4″.00 – 48.00″ OD
Inside Diameter1.180″ – 6.00″ ID2.25″ – 40.00″ ID
Length25′ (300″ )50′ (600″)
Weight10 Ton Crane20 Ton Crane

Large Shaft Buildings 82 & 87Large Milling Plant
Outside Diameter4.00″ – 98.00″ OD2.00″ – 20′ (240″) Width
Inside Diameter2.00″ – 60.00″ IDup to 7′ (84″) Height
Length70′ (840″)up to 20′ (240″) Length
Weight130 Ton Crane20 Ton Crane