EN 10357 (DIN 11850)
EN 10357 is the leading European standard for the production of stainless steel tubes used in the food industry. This standard ensures quality, hygiene, and reliability in food processing applications. All reputable manufacturers base their product lines on this standard, offering multiple dimension series.
Thanks to generous tolerances and a variety of finishing options, a broad and diverse product range has emerged. As a result, products vary not only in appearance but also in quality and price. Each specific specification can be identified by a unique code. If this code is not specified when ordering, there is a risk that the delivered tube may differ from the desired or required version.
Connection with the PED directive
The EN 10357 standard is directly linked to EN 10217-7. The annealed tubes are suitable for pressure applications that fall under the European Pressure Equipment Directive (PED 2014/68/EU). This makes them ideal for systems where safety and compliance with laws and regulations are essential.
SKS delivers reliability
At SKS, we work exclusively with manufacturers who are PED-certified. This guarantees that you always receive reliable, compliant, and durable components for your system. Whether it concerns new installations, maintenance, or rapid delivery of spare parts – we ensure you can immediately rely on the right quality.
Stainless steel types; 1.4306 or 1.4307 (304L) and 1.4404 or 1.4432 (316L)
Dimension table and tolerances
Dimension table from EN-10357 and tolerances according to EN-ISO 1127
Test procedure EN 10217-7 TC1
Welding factor: Z = 1.0 (PED requirement)
Destructive and non- destructive testing
Surface roughness Ra (DIN 4768 table 3)
Internal length of weld seam rolled away cold.
H2 version* = Ra < 0.8 µm and < 1.6 µm in the welding environment (Official according to standard)
H3 version* = Ra < 0.8 µm also in the welding environment. (EHEDG requirement)
* H2 and H3 is an SKS name that comes from the DIN 11866 standard (Hygienic class)
CC = unannealed, pickled W2b (K1g)
BC = annealed, pickled W2Ab (K2g) or bright annealed W2Rb (K3g)
CD = unannealed, externally ground (grit 320)
BD = annealed, externally ground (grit 320)
Certificates
3.1 certificate According to EN 10204 (3.2 certificate also possible on request)
EN 10357-A
The family of standards under EN 10357-A are written on top of each other and refer to each other. The various components not only fit together perfectly in terms of dimensions, but also have an equivalent finish or application option. Below we first provide a technical summary of the various standards and then we will provide an overview of the delivery options with the specific data. This range of materials is the most complete within all options for the food industry. They are also the most widely used, but due to price pressure they are also the most copied in other qualities. The components of this package that SKS carries under the Q-Plus and Q-Fitt label are exactly in accordance with the standard. SKS takes responsibility for traceability and quality.
EN 10357
There are sometimes very small tolerance differences within the inch sizes. It is therefore important to choose the fitting sizes for these pipes. Because these fittings are not yet EN-standardized, this means a multitude of options based on the old standards. This also applies to the associated links. The parts of this package that SKS carries under the Q-Fitt label are exactly in accordance with the standard. SKS takes responsibility for this with regard to traceability and quality.
EN 10357-C/D
EN10357-C/D defines dimensions according to ASME A270 (3A) and ISO 2037 (SMS)
EN 10357-C
EN 10357-D
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