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T.D. Williamson, Inc.
International manufacturer and services provider for hot tap and hot tapping equipment and services and other pipeline maintenance equipment.
www.tdwilliamson.com/

TSS International Inc
Selling valves, meters, manifolds and other devices used with piping. Based in Houston, Texas. Includes product listings.
www.tssi.org/

Pipeline Measurement and Control
Provides turn-key systems, equipment, and services for production and pipeline custody metering, control and conditioning of crude oil, natural gas and refined or processed hydrocarbon fluids.
www.pipelinemeasurement.com/

Shaw Pipeline
Specializes in technology-based exploration and production products and services for pipeline, petrochemical and industrial markets worldwide. Manufacturing and service facilities globally.
www.shawpipeline.com/

Sienna Composite Group Ltd.
Supplies fluid transmission alternatives through spoolable recoverable composite pipe. Includes a list of products, details on the safety and environmental policies. Located in Canada.
www.siennacomposite.com/

PipeSak Incorporated
Offers a new patented system of gravel-filled baffles which straddle a pipeline to achieve buoyancy control. Features advantages, a list of technical notes, and a comparison with other techniques.
pipesak.com/

BKW, Inc.
Provides pipeline pigging technology, equipment and anchoring systems, pipe supports, slug catchers and engineering services. Based in Tulsa, Oklahoma. Offers information about products.
www.bkwinc.com/

Tuboscope Pipeline Services
International provider of instrumented pig inspection and data management tools and services. Offers instrumented geometry, metal loss and crack detection tools. Based in Houston, Texas, USA.
www.tuboscope-pipeline.com/

Pipeline Construction and Engineering Supplies Ltd
World wide suppliers and manufacturers of pipe handling, preparation, alignment, coating inspection, welder protection, welding equipment and general tools for the constructional, petro chemical and pipeline industries.
www.pces.uk.com/

CDRiA Pipeline Services
Provides cleaning pigs, intelligent geometry pigs and ultrasonic wall thickness inspection pigs and related services. Provides comprehensive pipeline survey reports of each inspection. Also manufactures ultrasonic material test equipment. Headquarters in Warsaw, Poland.
www.cdria.com/