1. PLASTIC
vs.
STEEL

2. Richard G. Kraft – VP Sales Marketing Endot Industries, Inc.
Past Chair Energy Piping System Division of Plastic Pipe Institute (PPI)
Past Chair of Conduit Division of PPI
26 Years with Endot

3. Producers of Polyethylene (PE)
Endot Industries, Inc.
Producers of Polyethylene (PE)
Gas Pipe, Water Pipe
& Telecom Conduit

4. Endot Industries, Inc. 40 years producing HDPE pipe and tubing
Headquarters in Rockaway, NJ
3 Operating Plants, NJ, TN & OK

5. Endot Industries, Inc. 24 Extruders in 3 Locations – NJ TN OK
½” through 12”
Producing – Gas Pipe & Tubing
Water Pipe
Geothermal Loops
Fiber Optic Conduit
Electrical Conduit

6. APPROVED or PRODUCING PIPE FOR:
PSE&G
UGI
NEW JERSEY NATURAL GAS
YANKEE GAS
WASHINGTON GAS
DOMINION GAS
NATIONAL GRID
CON EDISON (NYC)

10. PLASTIC
POLYETHYLENE
vs.
STEEL

11. POLYETHYLENE WHAT IS IT?
Polyethylene was first synthesized accidentally in Germany 1898
The first practical industrial synthesis was discovered in England in 1933
In 1939 this process was developed into a reproducible basis for industrial production

12. POLYETHYLENE WHAT IS IT?
POLYETHYLENE (PE) is a Thermoplastic consisting of long hydrocarbon chains
PE is very similar to candle wax and a simple resin consisting of Carbon and Hydrogen
PE has excellent chemical resistance even to low levels of oxidizers such as chlorine

13. EARLY GAS PIPE SOLUTIONS
CAST IRON – Installed beginning in the 1830’s. Cast iron pipe is well past it’s prime and should be replaced
CAST IRON – Short pieces of pipe
multiple joints now leaking
aging out and getting brittle
BARE STEEL – corrosion issues with bare steel are cause for concern with increasing potential for leaks, this pipe too should be replaced

15. EARLY GAS PIPE SOLUTIONS
Cast-iron and bare steel piping are made out of metal and susceptible to corrosion and rust.
This aging infrastructure is causing undetected cracks and holes from which gas can leak.
85,000 miles of aging cast-iron and bare-steel gas pipes still operating in U.S. communities
Most of the cast iron mains are in the Northeast.

16. POLYETHYLENE THE SOLUTION
In the late 1960s the DuPont Company invented Aldyl pipe material – according to Jana Labs - Aldyl was a brilliant invention to fix a problem afflicting the gas distribution industry.
That problem was metal pipe corrosion, and Aldyl, being a Medium Density Polyethylene (MDPE), eliminated the corrosion problem. 

17. POLYETHYLENE THE SOLUTION A Joint Free system using Fusion
Polyethylene has a benefit that only plastics can provide
A Joint Free system using Fusion
Fusion joins PE pipe at the molecular level creating one continuous pipe without joints.
Joint Free Is LEAK FREE – no methane escapes – addresses State and Federal efforts to mitigate fugitive methane

19. POLYETHYLENE THE SOLUTION
Aldyl resin was produced from 1965 into the 1980’s
Aldyl had issues as well – unlike todays PE resins, Aldyl had limited stress crack resistance. Older version of Aldyl were less resistant than newer versions.
The higher the stress crack resistance the longer PE pipe will last

21. POLYETHYLENE THE SOLUTION
MDPE resins produced from the 1980’s onward had significantly improved stress crack resistance
MDPE became the resin of choice for gas distribution piping systems – recognized by its Yellow color
Gas Distribution Piping in the USA is 95%+ PE gas pipe today

23. POLYETHYLENE THE SOLUTION
In the 1990’s a new method of producing PE became popular – BI-MODAL polyethylene
Bimodal PE provides multiple benefits over earlier PE resins

24. POLYETHYLENE THE SOLUTION Bimodal PE has a life of over 100 years
Bimodal PE has stress crack resistance in excess of 10,000 hours in laboratory testing
Bimodal resin reduces RCP potential significantly

25. POLYETHYLENE THE SOLUTION
Bimodal PE is mostly produced as High Density Polyethylene (HDPE) commonly called PE4710
Bimodal HDPE as gas pipe is black with yellow stripes
Bimodal HDPE is rapidly replacing MDPE as the resin of choice for gas distribution

27. POLYETHYLENE THE SOLUTION
PE currently is limited to 125 maximum pressure
PHMSA may soon recognize the properties of Bimodal PE4710 resin and that pressure limit could be raised
Even if the limit is not raised PE4710 resin will allow thinner walled pipe for higher flow rates and lower cost

28. POLYAMIDES PA-11 & PA-12 ANOTHER SOLUTION
Polyamides can handle pressure up to 200 psi
Polyamides can be fused providing a joint free, leak free piping system

30. QUESTIONS? Endot Industries, Inc. 60 Green Pond Road
Rockaway, NJ
ENDOT ( )
Rockaway, NJ - Greeneville, TN Pryor Creek, OK