Hobas
- Manufactures and supplies large diameter, centrifugally cast, glass-fiber reinforced, polymer mortar pipe (fiberglass pipe) ideally suited for corrosive applications and installations such as microtunneling, jacking, sliplining, pipe bursting, direct bury
- http://www.hobas.com

Tulsa Rig Iron
- Offers complete line of drilling fluids and related products.
- http://www.tulsarigiron.com/

Permalok Corporation
- Supply a interlocking pipe joining systemis designed to be flush with the interior and exterior surfaces of the pipe. Includes structural analysis and installation data.
- http://www.permalok.com/

Mark Tool & Rubber
- "Splashtron": Perfect Coating For Pulling - For directional river or road crossings, when corrosion and site conditions are tough, "Splashtron" from Mark Tool Co. is the coating of choice.
- http://www.marktool.com/

Wyoming Bentonite
- Supplying products for use in environmental protection, drilling fluids, and industrial applications.
- http://www.wyoben.com/

No-Dig-Pipe, Microtunneling Clay Pipe
- No-Dig, A Division of MCP Industries Inc is the manufacturer of the first rigid bodied, clay pipe for use in microtunneling, sliplining, pipe bursting and in casings in the United States. Our first installation was in Houston Texas in April 1992. Since
- http://www.no-dig-pipe.com/

Parchem, Horizontal Directional Drilling Supplies
- Parchem, Inc. supplies drilling fluids, solids control systems, component units and tri-plex mud pumps.
- http://www.parchem.com/

Sinclair Services
- Sinclair Services, a division of Ecivres Corporation, is a full service supplier to the Foundation and Construction, Environmental, Horizontal Drilling, Mineral Exploration, and Water Well industries.
- http://www.sinclairservices.com/

HollyPipe
- Oilfield drill pipe and drill collars, utility boring tubulars, drill and leave utility pipe, directional drilling consultation and machine work.
- http://www.hollypipe.com/

Liquid Earth Support
- A geotechnical firm dedicated to the formulation of drilling fluids, lubricating slurries, self-hardening slurry/grouts, adapted to your site conditions and specific requirements.
- http://www.liquidearthsupport.com/

CETCO - Colloid Environmental Technologies Company
- CETCO's bentonite products are often used during directional drilling projects. CETCO provides practical solutions for today's environmental problems. A full-service, global environmental company, CETCO is backed by more than 70 years of bentonite mining
- http://www.cetco.com/

Baroid IDP
- Baroid is a provider of industrial drilling products.
- http://www.baroididp.com/

Can Clay Corporation
- A manufacturer of vitrified clay products. These products include vitrified clay pipe for open trench, microtunneling, pipe jacking and pipe bursting installations which are especially suited to long lasting performance for sanitary sewers and storm sewer
- http://www.canclay.com/

Meyer Rohr and Schacht GmbH
- Meyer Rohr and Schacht GmbH, manufacturers of polycrete pipe and manholes. Polycrete is commonly used for trenchless new construction.
- http://www.meyer-polycrete.com/english/index.htm

ROCLA
- Concrete pipe for jacking.
- http://www.rocla.co.za/

ACIPCO - American Cast Iron Pipe Company
- Manufacturers of ductile iron, steel, cast iron, and centrifugal pipe which are often used for pipe jacking and microtunneling.
- http://www.acipco.com/