Fiberglass Reinforced Polymers (FRP) Gratings and structures

M.M.: A STORY OF RELIABILITY We design and supply high quality standard customized solutions according to clients’ specific needs, to guarantee safety for the users of our products. M.M. s.r.l. was established in 1977 and was the first European producer of FRP gratings (Fiberglass Reinforced Polymers). M.M. has been growing steadily over the years, both in size (at the moment the company is operating in two plants on an area of 13,000 m²), as well as in its production range. Today M.M. offers gratings, profiles and structures in FRP (parapets, gangways, ladders, fences, gates) and a wide range...

cOMPLETE SUPPORT FROM DESIGN TO CONSTRUCTION SITE Our business reaches various markets in the world, directly or indirectly through our sales and distribution network. We are the leaders in FRP in the European market, chosen by our customers for the high quality of our products and for the technical services we provide.

OUR CUSTOMER SERVICES M.M. boasts a management quality system certificate ISO 9001 that guarantees high quality standards. We offer a design service carried out by our highly experienced technical team composed by 3D-modeling specialists, structural calculation and drawings for any type of FRP structure, acheiving a high level of quality and precision. In order to ensure the maximum safety and reliability, we can carry out mechanical tests in the laboratory in our workshop, fully equipped with load cells, as well as chemical resistance tests of finished products by exposing them to chemicals...

The FRP or GRP is commonly known as Fiberglass Reinforced Polymers. It is a material consisting of a matrix of thermosetting polyester resins reinforced in continuous glass fibers. These two components lend different properties to the material: the glass fibers give high mechanical resistance and represent the structural part, while the polyester resins tie together the glass fibers enabling stress distribution and high corrosion resistance. These properties allow their use in numerous applications. M.M.’s gratings are manufactured using RTM (Resin Transfer Molding) technology, based on the polymerization...

the advantages of our frp Excellent mechanical resistance/weight ratio LIGHT WEIGHT AND RESISTANT STRUCTURES EASY INSTALLATION MAINTENANCE FREE VERSATILE USE In the FRP products, the glass fibers confer a high mechanical strength and if compared to steel’s weight it turns out to be more resistant. High dielectric properties FRP is non-conductive. Good fire reaction M.M. products are manufactured in a self-extinguishing version. Resistance to chemical agents The resins used preserve the products’ characteristics - even if in permanent contact with most chemical compounds. Resistance to temperature...

comparison between frp and steel FRP GALVANIZED STEEL STAINLESS STEEL Does not stand sulfur compounds that destroy the zinc coat. Does not stand < 5.5 PH acids. Does not tolerate Cl- and Fl- ion compounds especially with fluid stagnation. Does not tolerate seawater. CORROSION RESISTANCE Long resistance to a wide range of chemical substances (both acids and bases) and temperatures. It does not stand organic compounds. Very light Profile density 1750 kg/m³ Grating density 1400 kg/m³ Very heavy Density 7850 kg/m³ ELECTRIC PROPERTIES Excellent insulator Surface and volume electric resistivity > 200...

standard galvanized steel grating before testing Have a look at these tests done with the collaboration of the Università Tor Vergata in Rome. The tests were carried out by immersing the samples in the specified substances for the given time. The pictures clearly show that there were no significant modifications to the FRP grating.

frp gratings M.M. FRP gratings are designed with a high safety factor and are manufactured according to the DIN 24537-3 standard. Our gratings are manufactured in a wide range of sizes in order to guarantee an immediate solution to various design problems and are produced in panels that are easy and fast to install. Our gratings are manufactured with an anti-skid certified surface according the DIN 51130 standard. They are supplied in the self-extinguishing formulation. Further to the classic gratings, M.M. can supply products with specific technical characteristics for their use in particular...

MOLDED GRATINGS Micromesh, “high heel proof” gratings, are available for pedestrian areas and raised floors; square mesh gratings are specific for heavy load floors and are easy to install; rectangular mesh gratings are ideal for fences; covered gratings are distinguished by their lightweight and the high mechanical properties. HIGH CHEMICAL RESISTANCE GRATINGS Our high chemical resistance gratings, manufactured with isophtalic or vinylester resins, additive free, are appropriate for use in chemically aggressive environments. The structural shape is designed in order to achieve a greater glass...

M.M. offers parapets that are designed and built according to the EN ISO 14122 standard and guarantee maximum safety. They are manufactured with pultruded profiles CE-marked in accordance with Regulation (EU) No 305/2011 for construction products, with average performance according to class E23 of UNI EN 13706. VERTICAL LADDERS Our ladders are built according to the EN ISO 14122-4 standard and are tested according to the EN 131 standard. They are pre-assembled and manufactured with FRP profiles CE marked in accordance with Regulation (EU) No 305/2011 for construction products. The ladder fasteners...

profiles and their applications Profiles are produced by pultrusion, a technology that uses a very high percentage of glass fiber, ensuring excellent mechanical performance. M.M. has a wide range of FRP profiles CE marked via ETA (European Technical Assessment) according to Regulation EU no. 305/2011 for construction products, and standard profiles made of isophthalic resin. On request they can be produced using other resins to meet specific customer needs. The default color is gray (RAL 7035). All profiles feature a polyester surface veil which, impregnated with a large quantity of resin, seals...