IMI Yorkshire Copper Tube Ltd.
- Leading manufacturer of copper plumbing and refrigeration tube for the construction industry suitable for use in most of the major worldwide markets.
- http://www.yorkshirecopper.com/

Techlite Insulation
- Non-Fibrous insulation systems for pipe, tanks, and ducts.
- http://www.techlite.net/

HTH Companies, Inc.
- Provides mechanical and insulation installation services in the midwestern US. Also provides scaffold erection and plant maintenance services.
- http://www.hthcompanies.com/

Advanced Polymer Technology, Inc.
- Designs and builds complete solutions for fueling installations including controlled flexible product piping, vent and vapor recovery piping, tank sumps, dispenser sumps, ast transition sumps and flexible entry boots.
- http://www.flexpipe.com/

Nelson Unit
- Supplies pipework, brackets and supports.
- http://www.nelsonunit.co.uk/

Pelican Forge Software Corporation
- Engineers use supportmodeler to model pipe supports in 3d cad for use with intergraph pds and bentley systems plantspace plant design systems.
- http://www.pelicanforge.com/

Plumbing Express
- Information for homeowners to determine if the have defective polybutylene plumbing in their homes.
- http://www.polybutylene.com/poly.html

Thermacor Process, Inc
- Manufacturer of prefabricated, preinsulated, secondary containment, and conduit piping systems for industrial and domestic applications.
- http://www.thermacor.com

Quality Pipe Products, Inc
- Manufacturer of pipe nipples. carbon steel, brass, stainless steel, chrome plated, pipe fittings: malleable iron and brass.
- http://www.qualitypipeproducts.com

PIHASA
- Design, manufacture, supply, maintenance and inspection of pipe hangers, pipe supports, cryogenic shoes, and accessories.
- http://www.pihasa.com/ingles/index.htm

Heat-Line
- Water pipe freeze-protection systems. Self-regulating internal and external heat-tracing systems can be fully insulated.
- http://www.heatline.com/index.htm

Piping News Report
- A resource for piping & hvac designers & engineers seeking information, jobs, news, articles and links pertaining to piping & hvac design & engineering.
- http://www.pipingnews.com/

Stainless Insert Flange Company
- Serves the piping and pressure vessels needs of the food, chemical, petrochemical, and pharmaceutical industries
- http://www.insertflanges.com/

Tahoe Design Software
- Develops piping design, pump selection software and custom product promotion CDs. Free software downloads are available at their website.
- http://www.tahoesoft.com

Lake Process Systems, Inc.
- Design and install sanitary piping systems. Also offer custom stainless steel fabrication and process piping installation.
- http://www.lakeprocess.com/

JCM Industries
- Manufactures fittings and fabrications for the repair, connection and branching/tapping of all types and sizes of pipe. Innovative engineering assures a technically advanced design with the highest safety factor possible.
- http://www.jcmindustries.com

Armstrong World Industries, Inc.
- Flexible thermal insulation for mechanical systems and process piping. Elastomeric and polyethylene pipe insulations control condensation and heat flow.
- http://www.armaflex.com/

VBS Industries, Inc.
- Provides liquid nitrogen handling equipment, including vacuum insulated no-frost cryogenic transfer hoses, automatic dewar filling stations and liquid nitrogen controllers. Campbell, California.
- http://www.vbsflex.com/

Valex
- Manufacturer and distributor of electropolished and non-electropolished stainless steel tubing and fittings.
- http://www.valex.com/

Orion Fittings, Inc
- Orion's high purity and ultra high purity systems are manufactured from pure, unpigmented, virgin polymers using no anti-oxidants, pigments or other foreign substances often associated with other plastic piping products.
- http://www.orionfittings.com/

Ogontz Corporation
- Temperature control, measurement/control, systems and testing equipment products.
- http://www.ogontz.com/

Unaflex Inc.
- Manufacturers of rubber, flexible metal and teflon-lined expansion joints and hose, sheet rubber and high temperature flue ducts.
- http://www.unaflex.com/

Pittsburgh Corning FOAMGLAS Insulation
- Insulation used in a variety of mechanical, industrial and building applications under many operating environments.
- http://www.foamglasinsulation.com/

Thermon Manufacturing Company
- Thermon's specialty is "heat tracing"; the application of steam, fluid or electric heat to piping, tanks, instrumentation and other equipment.
- http://www.thermon.com/

OmegaFlex
- Developing and manufacturing flexible metal hose and braid for over 20 years.
- http://www.omegaflex.com/

Rovanco Piping Systems
- Providing pre-insulated piping system.
- http://www.rovanco.com/

Insul-Vest, Inc
- Manufacturer of high temperature insulation blankets. Offer off the shelve and custom designed products for a range of industries and applications.
- http://www.insul-vest.com/

Piping Technology & Products, Inc.
- Manufacturers of various high quality engineered products including pipe hangers (variable and constant load), spring hangers, expansion joints, mechanical and hydraulic snubbers, insulated pipe supports (cryogenic supports/cold shoes, hot shoes), and cod
- http://www.pipingtech.com/

Belform Insulation
- Available in buns, boardstock, cut pipe sections, pipe supports, bends and curved segments, Koolphen K is suitable for heating, ventilation, air conditioning, process and industrial applications.
- http://www.belform.com/

Polybutylene Info Central
- Comprehensive information about polybutylene plumbing for homeowners, home buyers, home sellers, property managers, real estate professionals and home inspectors.
- http://www.polybutylene.com/