Square manhole adjustment
Feb 26th, 2016
Square manhole adjustment
Based on the success and acceptance of the round PRO-RING™ Manhole Grade Adjustment System, Cretex now offers square and rectangular PRO-RING™ systems. These new products are manufactured from the same engineered polymer, expanded polypropylene (EPP), as the round versions and meet the loading requirements of AASHTO HS-25. EPP is renowned for its exceptional strength-to-weight ratio, chemical resistance, durability and long service life. PRO-RING™ is approximately 1/20th the weight of concrete grade rings, which makes them easier to handle, safer and reduces the risk of worker injury.
Cretex Specialty Products
