Solutions for the Petrochemical Industry

Asahi - Proline Polypropylene Piping

Proline is manufactured from a copolymer polypropylene consisting of propylene and ethylene, according to ASTM D-4101, and contains a stabilizer to resist the effects of corrosive hot liquids.

Harrington Industrial Plastics - Asahi Proline Polypropylene Piping
  • Pipe and fittings are inventoried in two pressure-rated systems, both designed according to a Standard Dimensional Ratio (SDR). Pressure ratings are derated at higher temperatures
  • PRO 150 is an SDR11 system rated at 150 psi at ambient temperature
  • PRO 45 is an SDR32 system rated at 45 psi at ambient temperature
  • Able to withstand continuous operating temperatures ranging from 32°F to 200°F
  • Resists most organic and inorganic chemicals, many strong and weak acids, alkalies, organic solvents and some aggressive gases
  • Well-suited for handling sulfur-based compounds
  • Corrosion resistance makes it ideal for handling salt water disposal and cooling lines
  • Joining methods include butt or socket fusion
  • Color is European green

Signet 8900 Multi-Parameter Meter​


  • Color coded for compressed air (light blue)
  • 100% leak free from a correctly made solvent joint
  • Easy to handle—1/8th the weight of steel
  • Quick to join by solvent welding
  • Speed of installation—no special equipment required
  • Tough and ductile
  • Metric sized; equivalent inch sizes are: 20 (1/2”), 25 (3/4”), 32 (1”), 50 (1-1/2”), 63 (2”), 90 (3”), 110 (4”)
  • 6″ & 8″ are IPS-sized, gray in color, with pressure ratings of 180 psi and 145 psi respectively

Compatible Units:

  • 515 Rotor-X flow 
  • 525 Metalex flow
  • 2000 Micro-flow
  • 2100 Turbine flow 
  • 2350 Temperature 
  • 2450 Pressure 
  • 2507 Mini-flow 
  • 2517 Brass flow 
  • 2536 Rotor-X flow 
  • 2540 SS flow 
  • 2552 Electromagnetic 
  • 2750 DryLoc sensor 
  • 2850 Conductivity 
  • 7000 Vortex flow
  • 8058 Signal converter 
  • 8059 External relay module
Harrington Industrial Plastics - Aquatic Signet

Double Containment Piping

Contamination of the environment do to chemicals leaking from piping systems is a major concern. But there is a solution. Harrington is helping to keep the environment clean and safe by offering field proven double containment piping systems such as: Asahi’s Dou-Pro, Chem-Prolok and Poly-Flo systems, IPEX’s Guardian Double containment and Encase systems, and GF’s Contain-It system. These and other reliable systems for hazardous chemicals are available from Harrington.

Harrington Industrial Plastics - Double Wall Piping
Harrington Industrial Plastics - Double Wall Piping

Plastic-Lined Steel Piping

When corrosive piping applications require the chemical resistance of plastic and the strength of metal, think plastic-lined-steel piping. It’s available in corrosion resistant PTFE, PFA, Polypropylene, and PVDF locked in liners and pipe sizes to fit your specific needs. Harrington can fabricate spool pieces to your exact specifications.

Harrington Industrial Plastics - Plastic-Lined Steel Piping