Based on DIN 11852 hygienic fittings and DIN 11850 tube series, the Hygienic Stainless Steel DIN Elbow and Tube range covers 45° elbows, 90° elbows, and 180° return bends, with butt weld, DIN clamp, and DIN threaded connection options. The smooth internal bore helps reduce product accumulation and supports efficient cleaning and drainage during routine process operation.
For systems requiring higher surface cleanliness, electropolishing is available to achieve an internal surface finish of Ra ≤ 0.4 μm. The fittings can also be integrated into CIP/SIP-compatible piping systems according to the requirements of the complete process installation.
The AVM hygienic elbow and tube range follows DIN dimensional requirements to support consistent installation with compatible sanitary piping components. DIN 11852 fittings can be matched with DIN 11850 tube series, helping buyers simplify component selection when designing or extending sanitary process pipelines.
SUS304 / 1.4301 is suitable for general sanitary applications where good corrosion resistance and mechanical performance are required. SUS316L / 1.4404 provides higher corrosion resistance and is more appropriate for pharmaceutical, biotechnology, high-purity, and chemically demanding process environments.
Different pipe layouts require different fitting configurations. AVM provides 45° elbows for gradual directional changes, 90° elbows for standard right-angle routing, and 180° return bends for compact U-shaped piping arrangements.
Connection options include butt weld, DIN clamp, and DIN threaded connections, allowing the fittings to be selected according to the installation method, maintenance requirements, and existing piping configuration.
The internal surface condition of a sanitary fitting directly affects cleaning efficiency and product retention. AVM Hygienic Stainless Steel DIN Elbow and Tube uses a smooth internal bore to minimize surface irregularities where process media could accumulate.
The standard surface finish is Ra ≤ 0.8 μm, while electropolishing can provide an internal finish of Ra ≤ 0.4 μm when a smoother surface is required.
The low-dead-space construction supports easier cleaning and drainage and can be used in process systems incorporating CIP and SIP procedures. The actual cleaning and sterilization conditions should be evaluated according to the complete piping system and process media.
| Item | Specification |
| Product Type | Hygienic Stainless Steel DIN Elbow and Tube |
| Fitting Standard | DIN 11852 |
| Tube Standard | DIN 11850 |
| Material | SUS304 / 1.4301, SUS316L / 1.4404 |
| Available Angles | 45°, 90°, 180° |
| Bend Radius | 1.5D Long Radius |
| Connection Types | Butt Weld, DIN Clamp, DIN Threaded Connection |
| Tube Size | DN10 – DN200 |
| Standard Surface Finish | Ra ≤ 0.8 μm |
| Electropolished Surface | Ra ≤ 0.4 μm Optional |
| Internal Design | Smooth Internal Bore |
| Cleaning | CIP/SIP Compatible |
| Application | Hygienic & High-Purity Piping Systems |
The fittings are suitable for sanitary pipelines used for milk, beverages, liquid food ingredients, sauces, and other process fluids. Smooth internal surfaces help reduce material retention and simplify routine cleaning.
SUS316L construction and optional electropolishing make the fittings suitable for high-cleanliness process piping used in pharmaceutical and biotechnology facilities. They can be incorporated into process lines where controlled surface conditions and CIP/SIP cleaning are required.
Hygienic Stainless Steel DIN Elbow and Tube can be used for milk processing, cream handling, yogurt production, and other dairy applications requiring hygienic connections and reliable corrosion resistance.
The fittings can also be used in clean process and high-purity piping systems where low product retention, smooth internal surfaces, and consistent dimensional compatibility are important selection criteria.
Proper selection of the elbow and tube should take into account tube diameter, bend angle, connection type, material grade, and the required surface finish. The selected fitting should match the dimensions and connection standard of the existing sanitary pipeline.
For welded installations, appropriate sanitary welding procedures should be used to maintain the integrity and cleanliness of the internal flow path. For clamp connections, compatible gaskets and clamps should be selected according to the process conditions.
During maintenance, the internal surface should be inspected for scratches, corrosion, deposits, or other conditions that could affect hygienic performance. Cleaning procedures should be established according to the actual medium and process requirements.
For projects requiring recognized hygienic standards, AVM can provide product configurations and documentation according to the customer's application requirements. 3-A, EHEDG, and FDA-related requirements can be considered when selecting materials, surface finishes, sealing components, and the overall sanitary piping configuration.
Certification or compliance documentation should be confirmed with AVM according to the specific product model, material, finish, and order requirements rather than being assumed for every configuration.
| Buyer Requirement | Recommended Configuration |
| General sanitary piping | SUS304 / 1.4301 |
| Higher corrosion resistance | SUS316L / 1.4404 |
| Standard hygienic processing | Ra ≤ 0.8 μm |
| Higher surface cleanliness | Electropolished, Ra ≤ 0.4 μm |
| Permanent pipeline installation | Butt Weld |
| Easy disassembly and maintenance | DIN Clamp |
| Threaded sanitary connection | DIN Threaded Connection |
| 90° pipeline direction change | 90° Elbow |
| Gradual direction change | 45° Elbow |
| Compact return routing | 180° Return Bend |
When purchasing sanitary elbows and tubes, dimensional compatibility is just as important as material selection. DIN 11852 provides the fitting specification, while DIN 11850 defines the corresponding hygienic tube series.
Using compatible DIN components helps reduce installation problems caused by dimensional mismatches and makes it easier for engineering teams to configure sanitary piping systems. For replacement projects, buyers should confirm the existing tube dimensions and connection requirements before ordering.
AVM supports sanitary piping projects with different material grades, sizes, angles, connection methods, and surface finish requirements. Buyers can provide the required DN size, material grade, elbow angle, connection type, surface finish, and application when requesting a quotation.
For customized or high-purity projects, AVM can confirm the applicable material and technical documentation according to the final configuration.
The standard material options are SUS304 / 1.4301 and SUS316L / 1.4404. SUS316L is generally preferred for applications requiring higher corrosion resistance or higher cleanliness.
The product range covers DN10 to DN200. The required size should be selected according to the tube diameter and flow requirements of the sanitary piping system.
AVM provides 45°, 90°, and 180° return bends. The 90° elbow is commonly used for standard directional changes, while 45° and 180° configurations are selected according to the specific pipeline layout.
Yes. The standard internal surface finish is Ra ≤ 0.8 μm, and an optional electropolished finish of Ra ≤ 0.4 μm is available for applications requiring a smoother internal surface.
Yes. The hygienic design is compatible with CIP/SIP process systems. However, the actual temperature, chemical concentration, cleaning frequency, and sterilization conditions should be evaluated against the complete system configuration.
The available options include butt weld, DIN clamp, and DIN threaded connection. Buyers should select the connection based on the existing pipeline standard and maintenance requirements.
The standard production lead time is 7–10 days. The actual delivery schedule depends on order quantity, product specifications, material availability, and customization requirements. Urgent orders can be confirmed with AVM before ordering.
The standard payment terms are 30% deposit and 70% balance before shipment by T/T or L/C. Small-value orders should be paid in full before production.
The products are securely packed in paper and wooden cases for international transportation. Packaging can be arranged according to product size, order quantity, and shipping requirements.
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