90° Short Radius (SR) stainless steel elbows

S&S Stainless International manufactures compact 90° Short Radius (SR) stainless steel elbows engineered for tight-space piping systems where sharp 90-degree directional changes are required. Featuring a centerline radius equal to the nominal pipe size (1.0 x D), our short radius elbows offer a significantly smaller footprint than standard long radius options, making them ideal for compact skids, vessel connections, and tight industrial manifolds. Manufactured in ASTM A403 304/304L and 316/316L stainless steel grades to ANSI/ASME B16.9 standards, these butt-weld fittings provide high structural strength, leak-tight reliability, and long-term corrosion resistance for chemical processing, marine, oil and gas, and heavy machinery applications worldwide.

 

What is 90° Short Radius (SR) elbow?

Our short 90-degree stainless steel elbow is a high-performance ASME B16.9 stainless steel pipe fitting specifically designed for tight spaces where a quick change in direction is required. With its compact design and short radius curvature, our short 90-degree stainless steel elbow is ideal for applications that need efficient flow within confined areas.

Built to international standards such as ASME, ASTM, JIS, and DIN, the short 90-degree stainless steel elbow ensures reliable performance, strength, and durability in challenging industrial environments, making it suitable for sectors like petrochemical, marine, and energy.

Product Overview of 90° SR stainless steel elbows​

  • Specification 
    • Material Grade 304, 316, 316L
    • Nominal Pipe Size 1/2” – 24”
    • Thickness SCH 5S, SCH 10S, SCH 40S, SCH 80S
  • Product Weight
    • The weight chart for the short 90-degree short stainless steel elbow can be found in the reference information
  • Product Packaging

    • Secure Export Packaging: Packed in seaworthy wooden bundles, protective cardboard, or heat-treated wooden cases to prevent transit damage.

    • Accurate & Labeled: Items are carefully sorted, packed, and labeled against the packing list for correct quantities and easy identification.

Product Specification of 90° SR stainless steel elbows​

DN25 – DN600

ASME B16.9 short 90-degree stainless steel elbow dimension chart, covering pressure classes from 25 to 600.
 

Nominal Pipe Size Outside Diameter Thickness(mm) Center to End(A, mm)
DN Inch mm SCH 5S SCH 10S SCH 40S SCH 80S
25 1’’ 33.4 1.65 2.77 3.38 4.55 25.40
32 1 ¼’’ 42.2 1.65 2.77 3.56 4.85 31.75
40 1 ½’’ 48.3 1.65 2.77 3.68 5.08 38.10
50 2’’ 60.3 1.65 2.77 3.91 5.54 50.80
65 2 ½’’ 73.0 2.11 3.05 5.16 7.01 63.50
80 3’’ 88.9 2.11 3.05 5.49 7.62 76.20
90 3 ½’’ 101.6 2.11 3.05 5.74 8.08 88.90
100 4’’ 114.3 2.11 3.05 6.02 8.56 101.60
125 5’’ 141.3 2.77 3.40 6.55 9.53 127.00
150 6’’ 168.3 2.77 3.40 7.11 10.97 152.40
200 8’’ 219.1 2.77 3.76 8.18 12.7 203.20
250 10’’ 273.1 3.4 4.19 9.27 12.7 254.00
300 12’’ 323.9 3.96 4.57 9.53 12.7 304.80
350 14’’ 355.6 3.96 4.78 9.53 12.7 355.60
400 16’’ 406.4 3.96 4.78 9.53 12.7 406.40
450 18’’ 457.2 3.96 4.78 9.53 12.7 457.20
500 20’’ 508 4.78 5.54 9.53 12.7 508.00
550 22’’ 558.8 4.78 5.54 9.53 12.7 558.80
600 24’’ 609.6 5.54 6.35 9.53 12.7 609.60

FAQs

1. What is the dimensional difference between a 90° Short Radius (SR) and a Long Radius (LR) elbow, and when should SR be used?

A 90° Short Radius (SR) elbow has a center-to-face dimension equal to 1.0 times the nominal pipe size (1.0 x D), whereas a Long Radius (LR) elbow measures 1.5 x D. For example, a 4-inch SR elbow has a center-to-end distance of 4 inches (101.6 mm). SR elbows should be specified primarily when installation space is severely restricted, such as on compact equipment skids, manifold systems, marine vessels, and tight structural bays.

We supply seamless (SMLS) 90° SR elbows for high-pressure service and plate-formed welded (WLD) SR elbows for larger pipe diameters. Standard supply includes factory-machined 37.5-degree bevel ends per ANSI/ASME B16.9, ready for direct field butt-welding. We also offer forged socket-weld and threaded options under ASME B16.11 for high-pressure, small-bore piping.

Due to the sharp bending radius of SR elbows, wall thinning on the outer curve (extrados) must be carefully controlled. Our quality control team uses ultrasonic wall thickness gauges across the intrados and extrados to guarantee compliance with ASME B16.9 minimum wall tolerances. All elbows undergo 100% Positive Material Identification (PMI) testing and full solution annealing to restore stress-free corrosion resistance. Complete EN 10204 3.1 Material Test Reports (MTRs) accompany every order.

Standard factory manufacturing lead time is 30 to 45 days after order confirmation and drawing approval. We maintain flexible MOQs for standard sizes in dual-certified 304/304L and 316/316L material grades, allowing international procurement teams to combine SR elbows, LR elbows, tees, reducers, and flanges into a single consolidated container shipment to minimize freight costs.

Bevel ends are fitted with protective plastic caps to prevent edge nicking or deformation during transit. Small and medium SR elbows are packed in ISPM-15 heat-treated seaworthy wooden cases lined with waterproof plastic film. Large-diameter elbows are steel-strapped into heavy-duty wooden crates or pallets with protective cushioning. We support global trade terms including EXW, FOB (Taiwan/China ports), CFR, CIF, and DDP via ocean or express air freight.

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