Stainless Steel Piping Systems ST Stainless Steel Piping System W 534 CERT DELIVERY PROGRAMME AND INSTALLATION Drinking Water Installations | Industrial Applications | Demineralised Water Compressed Air | Inert Gases | Fire Water Mains | Solar Everything you need to know SIMPLESTA® ST STAINLESS STEEL PIPING SYSTEM Esta Rohr 4 Stainless steel has a future 5 Perfectly compatible coupling technology 6 A multitude of applications 7 The simplesta® ST stainless steel piping system at a glance 8 Working on the safe side – simplesta® ST system pipes 9 simplesta® ST system pipe specifications 10-11 The best pipe deserves the best coupling – simplesta® ST system press fittings 12 MOULDED PARTS DELIVERY PROGRAMME simplesta® ST system press fittings at a glance 13-39 Preform combinations 40-48 PRESSING TOOLS simplesta® system pressing tools 49-55 Space requirements for crimping 56-57 Subject to technical amendments. 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Information as of 08/2020 2 MONTAGE Cutting and deburring 60 Marking the insertion depth, verification 61 Slipping on the fittings, post-verification 62 Crimping 15 to 54 mm 63 Crimping 76.1 to 108 mm 64-65 APPLICATION TECHNOLOGY Thermal expansion 66 Linear expansion of the materials 1.4401 and 1.4521 67 Expansion bend lengths 68-69 Bend radius 69 Pipe attachment and installation 70-73 Soundproofing 74 Fire protection 74 Heat emission and insulation 75 Applications 76 Other media 77 Notes on corrosion resistance 78-79 Pressure loss 80 Maximum theoretical flow velocity 80 Pressure loss tables 81-84 GENERAL INFORMATION A positive step for all involved 85 Leakage test 88 Flushing 88 Trace heating 88 Potential equalisation 88 3 First-class and proven: Our products build on 40 years of experience. Our company – Esta Rohr GmbH – has been producing stainless steel pipes in our factories for 40 years on behalf of exacting customers with an array of different require- ments. As a German pipe manufacturer, we are committed to offering products of the highest quality. Such sectors as the automotive industry, process engineering, forming technology and design engineering have been using Esta Rohr pipes successfully for years. All the machining and finishing processes essential for our stainless steel pipes are incorporated into the production flow. This includes laser welding, post-weld dressing (inside and out) and solution annealing. In-production quality controls that go far beyond the standards required complete our 'Made in Germany' production profile. Our expertise in installation technology was demonstrated from the very first moment our proven simplesta® ST stainless steel piping system for drinking water lines and numerous other applications was used. Pipe dimensions from 15 to 108 mm and the practice-driven fitting programme are processed using the latest pressing technology (M-profile). 4 ST STAINLESS STEEL PIPING SYSTEMS Stainless steel has a future: First-class and proven: Our products build on 1.4401 / 1.4521 40 years of experience. 'Stainless steel' has become a generic term for the large 1.4401 and 1.4521 are materials that enable the user to group of corrosion-resistant steels. VA, inox or rust-proof draw on more than 40 years of experience in a multitude steel are other colloquial names or trademarks. Improving of different applications. or adapting the properties to meet new requirements by mixing (alloying) iron with other metals or materials has These materials deliver good value for money and the gre- been a continuous goal since the Iron Age (eighth to the atest degree of safety in sanitation installations. Esta Rohr fifth century BC). pipes made using 1.4521 ferritic stainless steel are also a cost-efficient and stable foundation for combating price The research laboratories of Friedrich Krupp discovered fluctuations on the commodity exchanges. the solution in 1912. Alloys with a chromium content of more than 12% or combined with nickel and carefully The materials are optimised for the simplesta® ST stainless balanced heat treatment delivered the foundation for steel piping system during the normal analysis. The molybde- technical application. num values at Esta Rohr are above the minimum values and special solution annealing increases the corrosion resistance The process was submitted for patenting on 17 October of of the pipes. The high degree of corrosion resistance is the same year. To this day, these steels do not need to be achieved through an extremely dense and stable chromium painted, coated, galvanised or undergo any other corrosion oxide layer of only a few atoms in depth, preventing the protection measures when treated properly. oxidation of the underlying base material. The simplesta® ST stainless steel piping system capitalises on We deliver the laser-welded pipes in the sizes 15 x 1 mm to system piping made using stainless steel with the material 108 x 2 mm. Esta Rohr has the experience and production number 1.4401 and ferritic stainless steel with the material techniques needed to process the material properly. number 1.4521. The defining main alloying elements are chromium and nickel in the case of 1.4401 and chromium and molybdenum in the case of 1.4521. In particular, mo- lybdenum improves the pitting resistance of 1.4401 and 1.4521 by 2.0 to 2.5%. 5 Perfectly compatible coupling technology The simplesta® ST stainless steel piping system consists of the Application is perfectly safe and permanently corrosion resi- 1.4401 or 1.4521 stainless steel pipe and the accompanying stant if the guidelines and recommendations are observed. 1.4401, 1.4404 and 1.4408 stainless steel press fittings. The blue press indicator at the end of the fittings makes your The M-profile crimped joint has been a technical and installation even safer. It is a simple means of visual control economic step forward compared to conventional joining for the installation engineer. The press indicator will only techniques, such as soldering, welding and screwing, for drop off if the pipe‘s crimped joint is secure. more than 50 years. The wording of the warranty statement and indemnification Application is perfectly safe and hygienic, as well as satis- agreements with the ZVSHK (German sanitation, heating fyingly durable if the guidelines and recommendations are and air conditioning association) confirm the safety of the observed. All the components needed for proper connection simplesta® ST stainless steel piping system. are part of an integrated system, are designed for compa- tibility as per the DVGW‘s (German technical and scientific Sound advice and practice-driven service by the manuf- association for gas and water) W 534 worksheet and are acturer (Esta Rohr GmbH) not only round off the system, certified in accordance with the DVGW‘s DW-8501CM0584 but also the requirement for certainty in all technical and system approval. Safe, simple and quick to process, the commercial questions. system offers durable stainless steel quality and all the com- monly known benefits of pressing technology. 6 ST STAINLESS STEEL PIPING SYSTEMS A multitude of applications The simplesta® ST stainless steel piping system is designed for use in drinking water and other supply lines within re- sidential, office and industrial buildings. The system is also suitable for fuel oil lines, compressed air lines, inert gases and solar installations in accordance with the special appli- cations described. One special feature is the unlimited and risk-free use for any type of water according to Germany‘s Regulation on water for human consumption (Trinkwasserverordnung - TrinkwV 2001), as amended. For other specific cases not mentioned here, please ask our application technology department – we look forward to assisting you. 7 The simplesta® ST stainless steel piping system at a glance The components of the system include the following groups: • ST system pipes 15 to 108 mm OD • ST system press fittings 15 to 108 mm • system pressing tools for all dimensions Features Description Coupling • permanently tight and continuously sealed pipe coupling as per the DVGW‘s (German technical and scientific association for gas and water) W 534 worksheet • positively and longitudinally locked, mea- ning also suitable for surface and flush fitting ST system pipes • austenitic material 1.4401 (DV7301BTO666) for gas and drinking water installations • ferritic material 1.4521 (DW7301AT2017) for drinking water installations • rust and acid-resistant steel • in-house FPC system • laser-welded pipes as per the DVGW‘s GW 541 worksheet, DIN EN 10893-2, DIN EN 10893-1, DIN EN 10217-7, DIN EN 10088, DIN EN 10312, DIN EN 10296-2 • solution annealed • intergranular corrosion resistance • deburr cut at an HL of approximately 6000 mm • each end closed with a blue (1.4401) or green (1.4521) plug • Mo content ≥ 2.3% in pipes made using 1.4401. PRE ≥ 24.10 • Mo content ≥ 2.0% in pipes made using 1.4521. PRE ≥ 24.10 ST system press fittings • stainless steel press fittings made using 1.4404/1.4401 • certain components (e.g. threaded pieces) made using the material 1.4408 • design as per DVGW W 534 • in-house FPC system • blue press indicator Seal rings • black EPDM (ethylene propylene diene monomer) seal ring LBP (leak before press) as standard • EPDM: -30°C to +110°C, up to +120°C for