крышки люков

manhole coversfeatures : (1) Environmental protection With raw material non-toxicity, it will not influence to user. (2) Saving mine resource It is made by regenerated resin or regenerated plastic raw material, which save application of cast iron. (3) Longevity Acid-alkali and corrosion resistance; Anti-rust; insulation; anti-abrasion; weatherability; excellent anti-pressure capability. (4) Competitive price The price of compound manhole cover is lower than stipulated standard cast iron ones. (5) Light weight The weight is 1/3 lighter than cast iron ones so that it is convenient to transport, install, rush repair; construct easily and reduce working intensity. (6) Nice appearance rich colors; the cover is not sprayed in surface but painted in whole material so that the color can keep lasted;. With clean, smooth surface, it will be consistent with the lawn or ground, beautiful and functional. (7) Anti-theft Non-recycle, anti-theft naturally; the lock attachment can prevent tunnel products from losing, therefore city blackhole can be stopped totally. (8) Low noise It can prevent the ear-piercing noise and shaking when car pass. Applications: (1) heavy-duty covers for motor vehicle Road, municipal pipelines, communications, power and water works. (2) P-type wells for steam 10 the following motor vehicle Road, municipal administration, living quarters communications, electricity and water supply works. (3) Light covers applied to sidewalks, parks, squares, green belt, municipal pipelines and other projects