MT Multilayer Pipes the Stable Combiners
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MT multilayer pipes The stable combiners • Drinking water installations • Radiator connections • Special applications DESIGNED FOR YOU. The high-performance partner Hewing – the reliable supplier for high-performance plastic pipe technology. In Hewing GmbH’s plants, all processes are The company maintains strong, Hewing offers an extensive portfolio of pipe focused on the fulfi lment of individual client successful partnerships with its clients. solutions. Moreover, we develop customized requirements. products for market introduction in close cooperation with our customers. Here, customers can benefit from a di- The components are used in drinking specifically defined training events and verse product range, which leaves nothing water installation, radiator connection and fl exible logistics. to be desired. Hewing provides custom surface regulation systems as well as in manufacturing according to clients’ speci- other special applications. Hewing clearly Environmental awareness is a signifi cant fi c requirements. This is ensured via: focuses on supplying companies who quality criterion for Hewing. From product provide complete systems. A successful development to manufacture and delivery, Sophisticated, fl exible production of concept on a global scale, the export it plays a decisive role. For example, thanks butt welded multilayer pipes quota is above 50 %. to the active environmental policy of the (MT multilayer pipes), company, production waste is 100 % re- the world’s largest manufacturing The service benef t cycled both in-house and externally. facility for physically cross-linked When you select Hewing, you select high polyethylene pipes (PE-Xc pipes), quality, without compromise. This also including two plants for physical applies to the versatile range of services cross-linking, accompanying its products, which is competent and innovative research specially designed to support system and development. suppliers in their work. It extends from research and development in co-operation with the client to marketing support, continuously available technical support, 2 O D R = 5 x D O MT multilayer pipes featuring a Ideally suitable for construction as well as renovation: Bend radii of up to fi ve times PE-Xc inner pipe can be expanded durable MT multilayer pipes. the external diameter are possible by up to 20 % using special tools – manually. without a loss in quality. MT – combined benef ts MT multilayer pipes are the material of protection against external influences the future, in particular in drinking water such as mechanical abrasion and con- installations and radiator connections. struction chemicals. Furthermore, the lightweight pipes are also deployed in specifi c designs for internal Stable in form and expandable gas installations and further applications. The positive properties of metal pipes are The material bond features the positive provided by the butt welded aluminium properties of plastic and aluminium. A plas- layer. It reinforces MT multilayer pipes in tic inner pipe – generally manufactured bends and over distances, enabling, for from physically cross-linked polyethylene example, greater fi xing intervals. They also (PE-Xc) – connected to the butt welded can be bent easily into tight radii – manu- aluminium layer via an adhesive is used for ally up to 5 times and using bending tools the transport of media. A subsequent up to 3.5 times the external diameter. This adhesive layer and the outer plastic layer facilitates installation and avoids the need follow, resulting in a premium product with for otherwise frequently required fi ttings. quality characteristics. Furthermore, the pipes feature minimal Corrosion-free and hygienic thermal expansion similar to those of metal Thanks to their plastic medium-carrier pipe, pipes thanks to the aluminium. In addition, MT multilayer pipes are corrosion-free they are also absolutely oxygen imper- in addition to preventing incrustations. meable – a signifi cant aspect in heating Furthermore, they minimise pressure los- applications. Further benefi ts derive from ses due to their extremely smooth surface. the butt welding process. The even layer When manufactured for drinking water structure provides for the same properties installations, they always feature medium- throughout the entire pipe circumference. carrying pipes made from PE-Xc – an Hence, MT multilayer pipes can be ex- irreproachable hygienic material – en- panded by up to 20 % using special tools suring adherence to regulations for the without a loss in quality, which has already transport of our primary foodstuff. In turn, enabled the development of innovative the outer plastic layer provides secure jointing technologies. 3 MT – Designed for you High-quality pipe technology, individually designed and manufactured. This is one of Hewing’s great advantages. The classic MT multilayer pipe is based on MT multilayer pipes are designed specially The yellow MT Gas pipe enables modern PE-X technology and is deployed in drinking using PE-Xc medium pipes for drinking water multilayer pipe technology in internal gas water installations and radiator connections. installations. installations. Clients can optimise product design to Plastic materials Dimensions precisely meet their system and applicati- Hewing can design the plastic layers of MT In general, MT multilayer pipes are avai- on requirements. Numerous parameters multilayer pipes (medium carrying inner lable in dimensions from 14 to 63 mm – for can be specifi ed individually for MT multi- pipe and outer layer) with different materi- in-wall or on-wall installation in general as layer pipes with their material combination als. Depending on the application area and well as for rising mains and cellar distri- of plastic and aluminium. Thus, Hewing the respective requirement profi le, these bution pipes. Both the internal and external provides the opportunity for clients to can be: diameter as well as the thickness of in- uniquely design their system technology dividual layers and overall pipe walls can via these pipes. PE-Xc (physically cross-linked be adjusted by Hewing to meet client polyethylene) based on PE-HD requirements or to fi t the desired jointing PE-Xc based on PE-MD technology. In particular, the ratio of alu- PE-HD (high density polyethylene) minium to plastic layers is signifi cant: If PE-MD (medium density polyethylene) the aluminium is suffi ciently thick, it be- PE-RT (polyethylene with raised comes the pressure-bearing element of temperature resistance) the entire pipe. 4 MT multilayer pipes are available in In-plant pre-insulated MT multilayer pipes Delivery of MT multilayer pipes is dimensions from 14 to 63 mm. provide true added value through noticeable implemented, upon client request, as a work facilitation on construction sites. coil or in straight lengths (c. f. photo). DESIGNED FOR YOU. MT Gas multilayer pipes represent a mensions, test and quality marks as well special case: These specially designed as manufacturer’s labels, this can also MT pipes are approved in Germany in the contain further elements or information dimensions 16 and 20 mm, and in the such as logos, company descriptions and Netherlands in fi ve dimensions between application area(s). Traceability in the 16 and 40 mm (see page 13). framework of quality assurance is additi- on-ally ensured at all times via the inscri- Fitting compatibility bed internal identification number and The precise adjustment of MT multilayer metre marking. pipes towards the required jointing technology is closely associated with Colour the selection of dimension. In addition to Both the medium carrying plastic inner pipe the required know-how, Hewing also and the plastic outer layer of MT multi- provides clients with the corresponding layer pipes can be produced in colours en- test technology for the assessment of tirely according to client requirements at specifi c pipe / fi tting combinations. Profes- the fl exible Hewing plant. Thus, pipe colour sional support regarding system-specifi c can be easily coordinated to match the fi tting development is also available on re- client’s corporate design. quest. In general, MT multilayer pipes are suitable for all customary fi ttings on the Insulation market – from press and sliding sleeve Pre-insulated MT multilayer pipes facili- fi ttings to clamp ring and push-fi t fi ttings. tate the installation on the construction site. They also simplify compliance with Pipe lengths the relevant insulating standards and MT multilayer pipes can be supplied as regulations. They are available with strong straight length products (according to di- PE all-round insulation (with or without mensions) as well as coils of up to 200 m in additional moisture protection), asymme- length. Delivery is generally in customer- trical insulation or even with corrugated specifi c card boxes or on customer-specifi c protective pipes / in a Twinpipe as a 'pipe- coils. in-pipe' solution. Signature Each pipe receives a special signature with relevant, client-specifi c information. In addition to necessary technical infor- mation e.g. regarding pipe materials, di- 5 Two materials in perfect harmony Five layers are unif ed as a homogenous, high-quality product in the f exible MT multilayer pipe production. Hewing uses aluminium bands featuring Aluminium is butt welded in a TIG process. Production incorporates many quality thicknesses of up to 1.5 mm for the control checks: e.g. dimension monitoring manufacture of MT multilayer pipes. on the external diameter. A sophisticated production process is nesses and