Ladtech, Inc.
Our Company Contact Us Offering a solution to the age-old problems associated with manhole adjustment rings.
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Sizes and Specifications - Material Specifications
LADTECH® POLYETHYLENE BLEND #9801
POST CONSUMER, MIXED COLOR, HIGH DENSITY POLYETHYLENE FLAKE
The following data was developed by LADTECH personnel utilizing the plastic laboratory of Hennepin Technical College, Brooklyn Park, MN in June of 1998.
PROPERTY ASTM VALUE UNITS
Melt Index D 1238 .49 G/10 min.
Density *Estimated .94 - .96 G/cm2
Tensil Strength @yeild D 638 3,453 PSI
Elongation @yeild D 638 122 %
Flexural Modulus D 790 147,771 PSI
Izod Impact Strength D 256 7.12 Ft-lb/in
Hardness (shore D) D 2240 63.1 --
Head Deflection Temp D 648 174°F @66 PSI
Shrinkage D 955 .032 in/in
The above data is representative of LADTECH primary-use blend polyethylene. This blend is produced from 100% recycled polyethylene. The predominate source product for the raw plastic is curbside collected, post-consumer, blow molded milk jugs, detergent bottles and injection molded thin-wall containers. The material is shredded, washed, dried, and sized to LADTECH specifications.
Designs and Specifications

24", 27", 30" 32" & 34" Diameter Rings
24" x 24" and 24" x 36" Catch Basin

THICKNESS/HEIGHT OPTIONS AVAILABLE:
(dependent upon diameter as follows)
24" & 27"
1 1/4", 1 1/2", 2", 4" flat and 1 1/2" Slope
30"
1 1/2", 2 1/4", 4" flat and 2 1/4" Slope
32" & 34"
2", 3" flat and 2 1/4" Slope
24"x 36" Catch Basin
1 1/2", 2", 2 3/4" flat and 1 1/2" Slope
24"x 24" Catch Basin
1 1/2", 2", 2 3/4" flat and 2 3/4" Slope
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