SEMI-FINISHED thermoplastics products Technological properties

PVC U

Polyvinylchloride is a material of low flammability with an exceptional chemical resistance and low stress crack formation. PVC U shows high mechanical strength, rigidity and hardness. The long-term operating temperature is from -15 °C up to approx. +60 °C. It can easily be glued/bonded and welded. Properties: • high mechanical strength, rigidity and hardness • excellent electrical insulator • high chemical resistance • self-extinguishing • low water absorbtion • good bonding and painting properties • low toughness • limited weather resistance Typical applications: Pump and valve bodies, seals, bearing cages, pipelines, tubes for handlamps, brush bodies, components for dental medicine, bench rails, cash register separators, profiles for switch cabinets and fair construction, drilling templates, pipes for receiving cores, lamp housings. PVC-HI (impact modified) - improved impact resistance at low temperatures (-40 °C). PVC-ELS* (electrically conductive) - variant of the PVC-U with improved electrical conductivity. PVC-C (Corzan®) - high strength, rigidity and hardness at elevated temperatures (+85 °C).

PP

Polypropylene shows high mechanical strength, hardness and rigidity, but a low notch impact strength. PP resists stress cracking and is easy to weld. Minus temperatures however make the material brittle. The chemical and electrical properties are very good. The long-term service temperature is between +5 °C and approx. +100 °C. Properties: • low density • high heat resistance • high rigidity, high surface hardness • high chemical resistance • low oxidation resistance • low abrasion resistance • brittle in the cold • HF welding not possible • natural coloured, not weather resistant Typical applications: Pump and valve components, seals, supports in the coating industry, spacers in plating industry, toy parts. PP-ELS* (electrically conductive) - variant of the PVC H with improved electrical conductivity. Higher strength compared with the standard PP. PP-30GF - The 30% glass fibre reinforced PP has an improved dimensional stability, an outstanding rigidity and heat resistance HDT/B +155 °C, which opens up additional applications.   PP-30PET-F - The 30% PET fibre reinforced  PP has an optimized rigidity with simultaneously improved notch impact strength. Properties: • extremely good proportion of rigidity and toughness • handy surface • shatterproof fracture behaviour for passive safety • at -30 °C better impact resistance than for instance PC • higher heat resistance than for instance PP • higher rigidity than for instance PP and PA • PET-fibres reducing the notch sensivity • good acoustic properties (good absorption, lower noise emission) • possibility for bonding Typical applications: Brush and roll manufacturing industry, pump and valve components. * change of name

PE-HD

Polyethylene shows a good chemical resistance to almost all acids and alkalis, many organic solvents and hot water. PE has good insulation properties and is easy to weld. The long-term service temperature is from -50 °C up to approx. +90 °C. Properties: • low density • high toughness (also at low temperatures) • high elongation at break • very good electrical and dielectrical insulating properties • very low water absorption • low vapor permeability • high chemical resistance • good stress crack resistance • physiological safety • smooth surface (low rigidity) • HF welding not possible • natural coloured, not weather resistant Typical applications: Transport containers, pump and valve components, parts in tank construction, components for medical applications, seals, sliding profiles, components for the food industry. PE-UHMW - The ultra-high molecular weight polyethylene shows a high abrasion resistance (extremely good sliding properties) and high rigidity at the same time. Compared to the standard PE-HD, the chemical resistance and the stress crack formation have been optimized. PE-EHMW has a long-term service temperature from -150 °C up to +90 °C. Properties: • low density • high rigidity (also at low temperatures) • high elongation at break • very good electrical and dielectrical insulating properties • very low water absorption • low vapor permeability • high chemical resistance • good stress crack resistance • physiological safety • smooth surface (low rigidity) • HF welding not possible • natural coloured, not weather resistant Typical applications: Pump and valve components, seals, sliding profiles, components for the food industry. Source: GEHR KUNSTSTOFFE, MANNHEIM

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Plastic pipe systems Overview of plastic pipe systems Technical information on ABS pipe systems Technical information on PVC  U pipe systems Technical information on PVC  U transparent pipe systems Technical information on PVC  C pipe systems Technical information on PP pipe systems Technical information on PP-R pipe systems Technical information on PE pipe systems Technical information on PVDF pipe systems Chemiedur - pipe Technical information on UP-GF (FRP) pipe systems UP-GF (FRP) pipes UP-GF (FRP) molded parts and connection UP-GF-PP (FRP) molded parts and connection UP-GF (FRP) adhesive collars UP-GF (FRP) loose flanges Pot Strainer DN 200 - DN 500 Inliner PP/FRP Coated Pot Strainer DN 200 - DN 500 Inliner FRP/CBL Coated Angle Seat Strainer DN 200 - DN 400 Inliner FRP/CBL Coated Manhole mad of FRP and PP/FRP Plastic pipes Calculator for cutting pipes Guidelines for sawing plastic pipe Leftovers in plastic pipe Standardization of plastic pipes and molded parts PVC U pipes deviations Pressure loss in pipe systems out of PVC U, PVC C and ABS pipe systems Distinction between Rp, R and G threads Screw lengths for flange connections Plastic fittings PVC U transparent ball valves Diaphragm valves Block valves Butterfly valves Plastic needle valves

Plastic Valves according to ATEX New EU guideline 2014/34/EU Plastic Valves in EX zones Y-Strainers PP-EL DN 15 - DN 50 Check valves PP-EL DN 15 - DN 50 Angle seat valves PP-EL DN 15 - DN 50 Bonding of plastic pipes Bonding manual Video showing the bonding of pipes Plastic welding Guidelines for extrusion welding Grids / support grids GFK grids Grids out of PP -el electrically conductive Profile support grids out of PP -el electrically conductive Molded ventilation parts Ventilation technology Chemical hose PVC transparent hose with fabric inlay Industrial tanks and chemical containers Dosing tanks and outer containers 35 – 1000 Liter Salt dissolving tanks 60 -5000 Liter Storage tanks and vats Storage tanks for water Safety and collecting troughs Industrial tank delivery program Dosing tanks with agitator Dosing tank agitators Dosing tanks with attachments Dosing tanks made of sheet material Customized chemical containers Dosing tanks with level indicators

IBC TANKS/CONTAINERS IBC screw caps DN 150/DN 200 IBC adapters out of PE IBC adapters out of PP MULTI FLEX BLOCK for IBC BULK CONTAINER Attachment parts for tank construction Vapor separators CO2 - absorbes Manholes Revision nozzles Block flange Filter housings and filter cartridges PENTEK 3G Slime Line filter housings PENTEK 3G Standard filter housings PENTEK Big Blue filter housings PENTEK PP high temperature filter housings PENTEK PP all nature filter housings PENTEK filter bags for Big Blue filter housings PENTEK surface filter cartridges PENTEK filter cartridges for depth filtration PENTEK filter cartridges with activated carbon CINTROPUR filter systems CINTROPUR water filters Flange configurator Blind flanges, loose flanges,  rectangular flanges Chemical resistance Table of chemical resistance for plastic pipe systems

Machined plastic parts Inserts Screw-in parts Threaded fittings Screw fittings Milled plastic parts Loose flanges and blind flanges made of sheet material Static mixers Static mixers made of plastic Strainers Single-type and double-type strainers Pot strainer DN 300 Angle seat strainer DN 500 Flow meters Variable area flow meters Configuration tool for flow meters Filter presses Laboratory filter presses Injection molded parts Scraper made of PE for filter press Kwerk Practice Blog The Kwerk team blogs from the field here

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