2022-11-24
Many areas have entered the cold winter. In this low temperature weather, with the protection of BETTER COVER, people only need to enjoy the beauty of this winter!
BETTER COVER FRP composite manhole covers can be used for a long time in an environment of -40°C, and temperature changes will not affect manhole covers performance.
BETTER COVER Experimental data of manhole cover materials
Low temperature (-40°C) flexural strength and modulus retention
Standard Specification Conditions：GB/T1499-2005,GB/T9979-2005（-40℃）
Index requirements: strength retention > 100% modulus retention > 100%
