Transite Pipe (Asbestos-Cement Pipe) — Asbestos Exposure Crosswalk

What This Equipment Is

Asbestos-cement pipe — best known by the Transite trade name (Johns-Manville) but produced by several major manufacturers — is rigid pressure pipe made by binding chrysotile fiber into Portland cement. Diameters ranged from about 3 inches to 36 inches and larger. From the 1930s through the early 1980s it was specified for:

  • Municipal water distribution mains
  • Sewer force mains and storm drains
  • Industrial process-water and cooling-water lines
  • High-temperature exhaust flues from heaters, dryers, and process equipment
  • HVAC ductwork in industrial drying applications
  • Refinery and chemical-plant process piping in selected services
  • Underground utility ducts carrying electrical cable

In industrial settings Transite was specified where its non-combustibility, corrosion resistance to many process streams, and pressure rating gave it an advantage over metal pipe.

Why Transite Pipe Work Was a High-Exposure Activity

Asbestos-cement pipe in service is non-friable so long as the cement matrix is intact. Exposure happens during field cutting, tapping, joint making, demolition, and repair — any mechanical operation that breaks the cement and releases the bound chrysotile.

Cutting Transite with a power saw (the standard field method for length adjustment and tap-in connections) generates dense fiber concentrations at close range. Drilling, grinding, and breaking pipe sections during pipe-rehab projects all produce the same exposure. Utility maintenance workers excavating and replacing failed sections of asbestos-cement water main are a documented exposure category.

Decades after original installation, much of this pipe is still in the ground. Water utilities across the United States continue to encounter, cut, tap, and replace asbestos-cement mains — an ongoing exposure source for utility crews and pipeline contractors.

Manufacturers Named in Asbestos-Cement Pipe Litigation

  • Johns-Manville — Transite (the dominant brand)
  • CertainTeed — asbestos-cement pipe
  • Eternit — asbestos-cement products including pipe
  • Atlas Asbestos Company — asbestos-cement pipe
  • Keasbey & Mattison — asbestos-cement pipe
  • U.S. Pipe — asbestos-cement pressure pipe
  • Capco / Capco Pipe — asbestos-cement pipe

Documented Product References

Images sourced from publicly available product-identification reference materials. Inclusion does not constitute a finding of liability against any company.

Trust Funds That May Apply

  • Manville Personal Injury Settlement Trust
  • Keasbey-Mattison related trusts
  • Various smaller asbestos-cement-pipe related trusts established through Chapter 11 reorganization

Trades Most Exposed at Transite Pipe Work

Utility pipeline workers (water and sewer), HVAC sheet-metal mechanics installing or replacing dryer and exhaust ducting, refinery and chemical-plant pipefitters, demolition crews, electrical workers handling underground utility duct.

Jobsites in the Network Documenting Transite Pipe

Compiled from publicly filed asbestos litigation, EPA / state-DNR records, and industry-publication histories. Product and company references reflect what has been alleged or documented in publicly filed litigation. This page does not constitute a finding of liability against any company. Not legal advice; consult a licensed attorney about your specific situation.