Engineering Information

HDPE pipes are not more difficult to engineer than metallic pipes once their basic material behavior is understood. HDPE’s light weight, toughness, and flexibility offer capabilities not possible with PVC, ductile and cast iron pipes.

Size, Dimensions and Pressure Rating Charts

Data Sheets

Pipe Calc

Software, Handbook and Field Manual

Plastics Pipe Insitute Member Company

News and Events



What if there was a pipe material that doesn't leak, won't rust or corrode and, when properly installed will be leak-free and maintenance-free for 100 years? Sound too good to be true? It's not. To find out how High Density Polyethylene Pipe (HDPE) we can solve our pipe infrastructure emergency, CLICK HERE video link

WL Plastics: ISO 9001:2008 Certified

WL Plastics is ISO 9001:2008 certified for its quality system. ISO 9001:2008. Quality System Certification is registered for WL Plastics Corporation, Ft. Worth, TX, and its manufacturing plants at Mills (Casper), WY; Cedar City, UT; Elizabethtown, KY; Bowie, TX; Snyder, TX; Rapid City, SD and Crossfield (Calgary), AB. read more

PE 4710 Chosen for durability and savings

PE 4710 was the Ideal Solution for Washington County Water Conservancy District’s Water Distribution System They began this project to deliver water to irrigators four and a half miles away at Anderson Junction. The project consisted of the district piping an old ditch called the Peter Anderson Ditch. Water loss along the ditch was large and often only a trickle was left at the end of the ditch. The ditch diverted water from Wet Sandy Creek to Anderson Junction. read more