VALPlast SMC composite grates are used to cover manholes.<\/p>\n
The manufacturing process consists of processing the raw material in molds shaped like the finished product, subjected to temperatures above 150\u00b0C and pressures above 100 bar.<\/p>\n
Advantages of using SMC raw material compared to other composite materials:
\u2013 using SMC (Sheet Moulding Compound) compared to BMC (Bulk Moulding Compound) provides a uniform structure of the finished product and superior surface finish
\u2013 SMC fibers are longer than in the BMC version
\u2013 SMC allows manufacturing large parts with a homogeneous structure and excellent mechanical, thermal, and chemical properties.
\u2013 only with this type of raw material can the optimal orientation of the fiberglass be kept constant to achieve high strength that remains consistent over time in the finished product.
\u2013 compared to BMC, with SMC it is impossible to use inert filler materials (sand or gravel), materials used to reduce the cost of the finished product but which dramatically reduce strength.
\u2013 using SMC has the advantage of maintaining consistent finished-product quality due to the automated production process. Also, this process generates no technological waste, the finished-product surface is very well finished, and it enables strong, large-size parts with a homogeneous structure\u2014difficult to achieve using BMC
\u2013 the product is non-polluting and can be fully recycled. <\/p>\n
Product standards:
SR EN 124-1:2015 Covers and gully tops for manholes and inspection chambers in vehicular and pedestrian areas. Part 1: Definitions, classification, general principles of design, performance requirements and test methods.
SR EN 124-5:2015 Covers and gully tops for manholes and inspection chambers in vehicular and pedestrian areas. Part 5: Covers and gully tops made of composite materials. <\/p>\n
When choosing the grate, please consider the area where it will be installed; classification is according to EN124-1:
\u2013 Group 1 (min. class A15, 1.5 t): areas used only by pedestrians and cyclists
\u2013 Group 2 (min. class B125, 12.5 t): pedestrian areas, parking lots, or multi-storey car parks
\u2013 Group 3 (min. class C250, 25 t): gutter channel area, max. 0.5 m measured from the curb into the carriageway and 0.2 m onto the sidewalk
\u2013 Group 4 (min. class D400, 40 t): traffic lanes on streets (including pedestrian streets), stabilized shoulders, and parking\/standing areas for all types of road vehicles.<\/p>\n
Advantages of VALPlast SMC composite grates:
\u2013 lower weight compared to cast-iron grates
\u2013 do not release hazardous substances into the atmosphere or water
\u2013 do not corrode
\u2013 do not generate noise when vehicles pass over them
\u2013 anti-theft protection
\u2013 easy and quick installation.<\/p>\n","protected":false},"excerpt":{"rendered":"
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