Weld-on Casing Adapters
Akkerman’s Weld-On Casing Adapters are often imitated, but never duplicated. These adapters are designed to connect pilot tubes that have been installed on line and grade to steel casing that will be installed by either auger boring or pipe ramming. Designed with high grade steels and a specific weld process to match, these adapters can be custom built to suit your specific diameters.
FEATURES:
Weld-On Reaming Head (WORH)
- Designed for guided auger boring applications in displaceable ground conditions.
- Diameters up to 36‑in can connect directly to the installed pilot tube string using standard Akkerman connections.
- Multi‑stage WORHs recommended for diameters larger than 36‑in; typical stage is ½ the final casing diameter for casings up to 72‑in.
- May be used with a pneumatic pipe ram when obstacles are encountered.
- Allows the contractor to lag the cutter behind the adapter for natural plugging in unstable ground or to remove augers for obstacle removal.
- Standard steel casing bore diameters stocked; custom diameters available.
Guided Ramming Head
- Designed for guiding steel casing installations using pneumatic pipe hammers.
- Optimized to allow dynamic soil movement along casing walls while resisting fatigue and eliminating side loading to maintain alignment.
- An additional 10‑ft hex core rod is recommended when connecting ramming heads directly behind pilot tubes to absorb shock loads.
- Standard steel casing bore diameters stocked; custom diameters available.
SPECIFICATIONS
Print This Page| model | diameter | ground conditions | length |
|---|---|---|---|
| WORH Standard | 12‐36 in. | N < 30 | 110 in typ. |
| WORH 2-Stage | 42-72 in. | N < 30 | 90 in typ. |
| GRH Standard | 20‐36 in. | Variable | 110 in typ. |
| GRH 2-Stage | Custom | Variable | 90 in typ. |
Testimonials
I have been working in the underground construction for the past 40 years. In the last 25 years I’ve been involved with all kinds of tunneling operations. Hand mine tunnels using jacking equipment, wood box tunnels dug by hand. But my favorite type of tunneling is MTBM’s. I have been working with and around Akkerman tunnel machines from 120” wheeled machines all the way down to the 48” SC tunnel machine. We’ve done successful runs in ranges from 200’ to 800’ with no problems. In all my years of tunneling we have never had a failure of equipment to cause us any down time. When we have had issues with mechanical parts or service needed Akkerman can usually get you the parts pretty quickly and technicians can get on a plane and help you out also. The team at Akkerman is always ready to answer any questions or problems you may have. They can help you decide on what equipment might work best for your particular job needs. I’ve also been involved with the GBM equipment we have run 32” PCH installing 30” Hobas pipe and also 44” PCH installing 42” Hobas pipe. We have had great success with GBM runs up to 500’ in length. Our last purchase was a new 5200 series jacking frame and 60” series 2 MTBM. We chose Akkerman for this equipment for our past experience and the fact they are made in the USA and can service us quickly. It truly has been great working with Akkerman.