Stainless Steel long radius street Union pipe elbow

Accessories

• Stainless steel 90° elbow body： Constructed entirely from 304/316L stainless steel;the material is dense and free of sand holes or air pockets, offeringresistance to acids, alkalis, and corrosion. It features uniform wallthickness and high structural strength, ensuring resistance todeformation under pressure.
• Sanitary flange plates： Precision-machined to a smooth, flat finish, ensuring a tight, high-quality seal.
• Curved flow channel：304 Stainless Steel/Aluminum Alloy (anti-slip)
• Flange sealing structure：304/316L Stainless Steel (polished finish)
• Overall assembly: Finished with mirror polishing on both interior andexterior surfaces; the interior is free of material accumulation zonesor dead spots and prevents media precipitation, meeting sanitaryproduction standards and suiting aseptic piping applications.

• Size:DN15-DN100
•  Working Pressure: 0.1-1.6 MPa
• Working Temperature:-20°C-120°C
• Connection:Sanitary flange bolt connection
• Surface Finish: Mirror polishing Ra < 0.8 μm; optional electropolishing Ra < 0.4 μm
•  Structural Design: Features a seamless, integrated 90° curved elbow design withintegral sanitary flanges at both ends. It connects to piping via bolted gasketseliminating the need for welding-and allows for easy assembly, disassembly,maintenance, and cleaning. The smooth internal bore is free of dead zones,supporting both CIP (Clean-in-Place) and SIP (Sterilization-in-Place) processes.
• Pressure Performance: The curved geometry ensures uniform stress distribution,while the seamless, one-piece construction eliminates joints. The flange sealingsurfaces fit tightly, maintaining a stable seal under conditions of pressure fluctuation,thermal cycling, and equipment vibration, without cracking or leakage.
• Product Function: Facilitates 90° directional changes in sanitary piping systems.The smooth, curved structure minimizes fluid turbulence and flow resistance, whilethe robust flange connection ensures stability; ideal for piping junctions requiringsecure sealing and frequent maintenance access.

Digital advantages

•  1. Elbow curvature, flange faces, and bolt holes undergo precision CNCmilling; dimensions, parallelism, and hole diameters are digitallycontrolled to ensure uniform specifications and error-free assembly.
• 2. Data from hydrostatic testing, internal surface roughness checks, andflatness inspections are recorded and archived for every unit, ensuringcomplete traceability of production and inspection information.
• 3. 3D modeling enables rapid switching between flange standards,diameters, wall thicknesses, and extended dimensions, facilitating quickgeneration of machining drawings and shortening lead times for customprototypes.
•  4. Real-time data collection on temperature, rotational speed, and feed
  rates during forging, polishing, and precision turning-combined withautomatic alerts for parameter anomalies-ensures consistent productquality and surface finish precision.
• 5. A comprehensive system database stores flange standards, materials,and polishing grades, allowing for rapid matching with customer tank andpipeline flange models; this ensures accurate order fulfillment and minimizes rework caused by mismatche

Stainless Steel long radius street Union pipe elbow

 

Feature (F)、Advantage (A)、Benefit (B)

1. Raw Materials:

• F:  Utilizes food- and pharmaceutical-grade 304 and 316L refined stainless steel(genuine industrial-grade billets). The material is pure, free from impurities or internal defects (such as sand holes), and possesses a stable, compliant chemicalcomposition that meets sanitary standards for product-contact materials.
• A: The material offers excellent corrosion and oxidation resistance; it does notrust or shed particles. Compared to inferior stainless steel, it effectivelymitigates issues such as corrosion and the leaching of metal impurities, therebyreducing the risk of media contamination and pipe oxidation or failure, whileenhancing overall weather resistance and stability.
• B: Ensures the cleanliness and purity of materials, pharmaceutical fluids, andpurified water throughout the process. It complies with GMP and food/pharmaceutical production regulations, preventing product rejection or quality control failuresand ensuring safer, more compliant production. 

2. Manufacturing Process:

• F:  Formed via integral forging; seamless andweld-free construction. Flange faces and boltholes are precision-machined using CNCtechnology throughout the process. Both internaland external surfaces undergo mirror-finishpolishing, ensuring flat and uniform end faces.Each unit undergoes comprehensive factoryinspections, including pressure testing, flawdetection, and cleanliness verification.
• A:Addresses process defects common instandard elbows-such as flange face warping,hole misalignment, rough polishing, and weld-related dead zones. Minimizes issues likematerial accumulation in dead zones, poorsealing, and installation misalignment, therebysignificantly enhancing product precision,cleanliness, and assembly fit.
• B:  Installation requires no secondary adjustmentsand ensures a seamless, tight fit, reducing reworkcosts. The piping is easy to clean and sterilizewith minimal bacterial residue, meetingacceptance standards for high-end cleanproduction environments.

3.  Structural Design:

• F:  Features an integrated structure comprising a90-degree curved elbow and sanitary-gradeflanges at both ends; the flow path is smooth androunded, flange faces are perfectly flat, bolt holesare symmetrically aligned to standardspecifications, and the structure is robust andresistant to deformation.
• A: The smooth curvature minimizes flowresistance, turbulence, and wear; the seamless,integrated design offers high strength andresistance to impact and fatigue, enabling it towithstand the stresses of high-pressure, high-temperature media over the long term andmaking it suitable for all-weather industrialpipeline operations.
• B:  Facilitates smoother flow, reduces energyconsumption and material loss, minimizeslocalized wear and perforation issues, extendsthe service life of the entire pipeline section, andlowers future costs associated with modificationor replacement.

4. Key Features & Advantages:

• F:  Offers comprehensive sanitary performance-including high cleanliness, a crevice-free design,superior sealing, high pressure resistance,reusability, and resistance to temperature andcorrosion-making it suitable for high-frequencyCIP cleaning and high-temperature sterilization.
• A: Minimizes issues such as bacterial growth,media residue, interface leakage, and pipelinedeformation or damage; enhances cleanlinessstandards, pressure-bearing capacity, operationalstability, and service life; ideal for large-diameter,high-load sanitary piping systems.
• B:Ensures more stable production line operationwith lower failure rates and reduced downtime;minimizes material loss; effectively improvesproduct yield rates while lowering long-term O&Mand piping replacement costs.

5.  Gasket Features:

• F:Paired with sanitary, food-grade gaskets(available in silicone, EPDM, or PTFE); non-toxic,odorless, highly elastic, and resistant to hightemperatures, acids, and alkalis; designed for flat-face flange sealing applications.
• A:Fits flush against the flange face without gaps;offers excellent resistance to pressure and aging,and resists deformation or cracking; overcomescommon issues like corrosion, aging, and sealfailure; enhances sealing stability and withstandshigh-temperature sterilization.
• B:Ensures zero leakage and zero contaminationat flange interfaces; eliminates material wasteand workshop hygiene risks; features a longservice life, reducing consumable replacementcosts and the frequency of maintenance-relateddowntime.

 

Stainless Steel long radius street Union pipe elbow

 

Connection Type：Sanitary flanged connection, matched with pipe/tankflanges via bolt fastening

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Production & Machining Method：CNC forging forming, CNC turning for flange face andbolt holes, precision bending, full dimensionalinspection, hydraulic pressure test

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Surface Treatment：Mechanical mirror polishing (Ra≤0.6  m/0.8  m),electropolishing, pickling and passivation,internal-external uniform polishing

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Raw Material Processing：Hot forging of seamless stainless steel blanks; nocasting or plate pressing

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Application & Usage Method：Installed in sanitary pipelines to change flowdirection by 90°, used for frequent disassembly, CIPcleaning and SIP sterilization in food,pharmaceutical and biotech production lines

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Gasket Material Options：Food grade silicone, EPDM, PTFE, viton; all safe forsanitary medium contact

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Sealing Method：Flat face compression sealing; gasket clamped tightlybetween two flange faces by evenly tightened bolts,dead-space-free sanitary sealing