4 in. Grade Round Ring
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Cretex
PRO-RING™ 4 in. Grade Round Ring
Purchase history
Cretex
PRO-RING™
4 in. Grade Round Ring
4027G400
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Product Details
Product Details
- PRO-RING™ is the only manhole grade adjustment system made from expanded polypropylene (EPP)
- PRO-RING™ products provide a proven alternative to concrete grade or adjustment rings and is the most advanced concrete ring alternative manhole grade adjustment system available anywhere
- EEP is known for its ability to stand up to the harshest of conditions without damage or deformity for many years
- Installed on tens of thousands of manholes and catch basins throughout the U.S. and Canada, these lightweight rings are renowned for their exceptional strength-to-weight ratio, durability, chemical resistance and long service life under the most demanding conditions
- Safety - it usually takes two to four men to lift a concrete grade ring, each one risking back injury. A 6" PRO-RING™ weighs only 14 pounds. Where concrete rings break and can cause injury, the PRO-RING™ system minimizes that hazard, helping reduce comp claims
- Efficiency - one man can easily install the PRO-RING™ system in just minutes. People are always amazed at our demonstration. The rings nest together and include a finishing ring and a slope adjustment ring for a precision fit
- Fast and cost effective - PRO-RING™ products speed manhole installation and repair dramatically, allowing the site to be closed in one day and reducing overall cost from 20% to 30% based on conditions
- No water, sand mortar or bricks are needed, just a few simple tools
- Angle ring allows conformity to sloped road surfaces
- Cost effective over the long haul
Specifications
- AASHTO:
- AASHTO HS-20, AASHTO HS-25, AASHTO M-306
- ASTM:
- ASTM C-1244, ASTM C-920, ASTM C-969, ASTM D-3575, ASTM D-4819-13, ASTM E-84 Class A
- Application:
- Automotive
- Collection:
- PRO-RING™
- Diameter:
- 40 in
- Diameter - Inside 1:
- 27 in
- Height:
- 4 in
- Material:
- Plastic
- Material Type:
- Polypropylene
- Product Type:
- Ring