seamless elbow fitting
seamless elbow fitting
seamless elbow fitting
seamless elbow fitting
seamless elbow fitting

Stainless Steel weld seamless clamp elbow fitting

JN-FT-23 4007-2
Size: DN15 – DN300 (½″ – 12″, O.D. Φ12.7 – Φ323.9); commonly stocked sizes DN15 – DN150 (1″ – 6″, O.D. Φ12.7 – Φ152.4)
Grade: Manufactured from high‑quality stainless steel SUS304 or SUS316L, offering excellent corrosion resistance and durability
Standard: Conforms to ISO, DIN, IDF, SMS, 3A, BS, BPE, and other internationally recognized sanitary standards
Working Pressure: 1.0 MPa (PN10 bar)
Test Pressure:Shell hydrostatic test: 2.4 MPa；Seal integrity test: 1.8 MPa
Temperature Range: -10℃ to +150℃ (steam sterilization up to 150℃ for max 20 min)
PTFE Seals: Standard PTFE gaskets (for flanged or clamp connections) provide excellent corrosion resistance, low friction coefficient, and broad temperature adaptability for long‑term reliable sealing
Viton Seals: Optional Viton (FPM) O‑rings are available for applications involving high temperatures, oils, or aggressive chemical media
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Stainless Steel weld seamless clamp elbow fitting
 
The stainless steel sanitary weld elbow fitting isa pipe fitting with a bending radius equal to 5times the pipe diameter and a mirror-polished inner surface. It is used for gentle directionalchanges in clean pipelines for food, pharmaceutical, and other hygienic applications, enabling low-resistance flow redirection with no dead zones or residue traps. Available in 304 or 316L material, ituses only butt-weld connections (no seals or gaskets) and relies on welded seam sealing. Insanitary industries, it prevents medium contamination, ensures stable fluid transport, and complieswith GMP, 3A, and other hygiene standards, making it suitable for high-cleanliness operating conditions.
 
The stainless steel sanitary seamless elbow fittingis a large-radius hygienic pipe fiting with a mirror-polished inner surface, no dead corners, a 5D bending radius, butt-weld connections withoutgaskets, and compliance with GMP/3A sanitary standards. In contrast, ordinary pipe fittingstypically have small-radius bends, rough internal surfaces, and often use gasket seals. The twodiffer significantly in cleanliness, flow resistance, sealing method, and sanitary compliance.Wenzhou Zhuoneng's stainless steel sanitary 5D butt-weld elbow is made from selected 304/316Lvirgin stainless steel, with an internal mirror polish to Ra ≤ 0.4μm, no dead corners, and easycleaning. It strictly follows 3A and GMP sanitary standards; employs CNC forming technology forhigh dimensional accuracy and smooth welds; uses butt-weld sealing for leak-free performance;and offers customizable specifications. It combines high cleanliness with durability and deliversexcellent cost-performance.
 

Accessories

 Component & Material Table
  • Body Material：304/304L/316/316L virgin stainless steel (food-grade, corrosion-resistant, no recycled content)
  • Low-Carbon Grades：304L/316L (enhanced intergranular corrosion resistance after welding,ideal for sanitary pipe joining)
  • Molybdenum-Containing Alloy：316L (superior resistance to chlorides and acidic media,especially suitable for pharmaceutical and saline food applications)
  • Regulatory Compliance： All grades certified under FDA and EU 1935/2004 (ensures no harmful substance migration over long-term use)
  • Quality Verification：100% spectral analysis and mechanical testing per batch (stable chemical composition, mechanical properties, and full export traceability)
Product Parameter Details
  • Body material：Stainless steel 304, 304L, 316, 316L (virgin food-grade material)
  • Pressure range：0.6-1.6 MPa (common pressure range for sanitary applications
  • Structure type：5D large-radius butt-weld type, U-shaped / single-bend sanitary pipe fitting
  • Main function：Enables smooth pipeline directional changes, reduces fluidresistance, prevents medium retention
  • Grade：Sanitary grade (for food, pharmaceutical, cosmetics and otherclean services)
  • Specification standards：DIN 11850, 3-A Sanitary Standard, GB/T 20801
  • Hygiene and safety class：Complies with GMP and 3A sanitary standards; internal mirrorpolish Ra  ≤ 0.4 μm
  • Installation orientation：Can be installed at any angle; suitable for horizontal / vertical clean pipelines
  • Customization：Customizable bend angle, pipe diameter, material, and surfacefinish precision

Digital advantages

  •  1.  Virgin stainless steel with mirror polish to Ras0.4um, compliant with 3A/GMP/ASME BPE,completely eliminates residue and contamination risks.
  •  2. . The 5D large-radius structure reduces flow resistance by 40% over 1.5D elbows, loweringenergy consumption and suiting long-distance clean transport.
  •  3. Gasket-free fusion weld seal with weld strength 95% of base metal, withstands -196°C to 300°C and 1.6MPa, with no aging or leakage risks.
  •  4.  Full range DN15~DN150, tolerances to DIN/ASME, perfectly matches global piping systems,reducing rework by 30%.
  • 5.  100% pressure and cleanliness testing per batch, factory pass rate 99.9%, and supply of3A/CE/GMP certificates to mitigate overseas compliance risks.
Stainless Steel weld seamless clamp elbow fitting
 
Feature (F)、Advantage (A)、Benefit (B)
  1. Raw Material:
  • F: Body made of 100% food-grade virgin 304/316L stainless steel; no additional sealing components (butt-weld construction).
  • A:Excellent corrosion resistance, no risk of medium contamination, compliant with3A, GMP and other sanitary standards.
  • B: Safely applicable in food, pharmaceutical, cosmetics and other clean processes; completely eliminates medium contamination.
  1.  Manufacturing Process:
  • F: Integrated CNC forming; internal mirror polish to Ra  0.4 um; 5D large-radiussmooth transition.
  • A: No dead zones for medium retention; high structural strength; stable dimensional accuracy; extremely low flow resistance.
  • B: Reduces pipeline pressure loss; ensures stable fluid delivery; prevents clogging and residue build-up.
  1. Structural Design:
  • F: 5D large-radius structure; butt-weld connection; precisely machined beveled ends;dead-corner-free design.
  • A:High weld joint strength; reliable sealing performance; no leakage risk; adapts to hygienic pipeline layouts.
  • B: Shortens installation time; suits heavy-duty sanitary piping systems; minimizes maintenance risks.
  1. Core Component Features:
  • F: Strict dimensional control; precisely machined beveled ends; compatible with same-specification sanitary pipes for butt welding.
  • A: Perfect match with pipes; easy installation; consistent performance.
  • B:Reduces rework costs; ensures long-term reliable operation; enhances overall pipeline system stability.
  1.  Sealing Characteristics:
  • F: No additional seals or gaskets; sealing achieved through molten metal fusion of the weld seam.
  • A: High weld seam sealing strength; no aging or failure issues; resistant to high/low temperatures and hygienic cleaning.
  • B: Suitable for -196°C to 300°C operating conditions; completely eliminates medium leakage; avoids seal aging failures.
 
Stainless Steel weld seamless clamp elbow fitting
 
Maximum Flow Rate：Depends on pipe size (e.g., DN50: ~80 m3/h at 0.6 MPa, varies withdiameter and medium)
Maximum Pressure：0.6-1.6 MPa (sanitary grade working pressure, compliant with3A/GMP standards)
Max Speed：Not applicable (static pipe fitting, no moving parts)
Body Material：304/304L /316/316L stainless steel (100% food-grade virginmaterial)
Body Types：5D (5x nominal diameter) sanitary butt-weld elbow; single-bend /U-shaped design
Inlet & Outlet Sizes：DN15-DN150 (1/2"-6"), matching standard sanitary pipe diameters
Max Temperature：-196°C (cryogenic) to 300°C (sanitary high-temperature cleaning)
 
 
 
 

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