Long 90-Degree Stainless Steel Elbow
S&S Stainless International manufactures industrial-grade 90° Long Radius (LR) stainless steel elbows engineered to change piping direction by 90 degrees while maximizing fluid flow efficiency. Designed with a centerline radius equal to 1.5 times the nominal pipe size (1.5 x D), our long radius elbows significantly reduce pressure drop, fluid friction, and internal pipe wear compared to short radius alternatives. Manufactured from high-integrity ASTM A403 304/304L and 316/316L stainless steel in strict compliance with ANSI/ASME B16.9 and MSS SP-43 standards, these butt-weld fittings provide superior mechanical strength and long-term corrosion resistance for oil and gas, chemical processing, water treatment, and power generation systems worldwide.
What is 90° Long Radius (LR) Elbow?
The long 90-degree stainless steel elbow is a premium-quality ASME B16.9 stainless steel pipe fitting designed for efficient direction changes in piping systems while maintaining smooth flow. This elbow fitting is engineered with a long radius curvature, reducing friction loss and pressure drops in your stainless steel piping system. It is ideal for applications that demand optimal flow performance and durability.
Manufactured to meet international standards, including ASME, ASTM, JIS, and DIN, our long 90-degree stainless steel elbow offers precision and reliability across various industries such as oil and gas, chemical processing, and power generation.
Product Overview of 90° Long Radius (LR) Stainless Steel Elbow
- Specification
- Material Grade 304, 316, 316L
- Nominal Pipe Size 1/2” – 48”
- Thickness SCH 5S, SCH 10S, SCH 40S, SCH 80S
- Product Weight
- The weight chart for the long 90-degree long 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 of90° Long Radius (LR) Stainless Steel Elbow
DN15 – DN300
| Nominal Pipe Size | Outside Diameter | Thickness(mm) | Center to End(A, mm) | ||||
| DN | Inch | mm | SCH 5S | SCH 10S | SCH 40S | SCH 80S | |
| 15 | ½’’ | 21.3 | 1.65 | 2.11 | 2.77 | 3.73 | 38.10 |
| 20 | ¾’’ | 26.7 | 1.65 | 2.11 | 2.87 | 3.91 | 28.45 |
| 25 | 1’’ | 33.4 | 1.65 | 2.77 | 3.38 | 4.55 | 38.10 |
| 32 | 1 ¼’’ | 42.2 | 1.65 | 2.77 | 3.56 | 4.85 | 47.75 |
| 40 | 1 ½’’ | 48.3 | 1.65 | 2.77 | 3.68 | 5.08 | 57.15 |
| 50 | 2’’ | 60.3 | 1.65 | 2.77 | 3.91 | 5.54 | 76.20 |
| 65 | 2 ½’’ | 73.0 | 2.11 | 3.05 | 5.16 | 7.01 | 95.25 |
| 80 | 3’’ | 88.9 | 2.11 | 3.05 | 5.49 | 7.62 | 114.30 |
| 90 | 3 ½’’ | 101.6 | 2.11 | 3.05 | 5.74 | 8.08 | 133.35 |
| 100 | 4’’ | 114.3 | 2.11 | 3.05 | 6.02 | 8.56 | 152.40 |
| 125 | 5’’ | 141.3 | 2.77 | 3.40 | 6.55 | 9.53 | 190.50 |
| 150 | 6’’ | 168.3 | 2.77 | 3.40 | 7.11 | 10.97 | 228.60 |
| 200 | 8’’ | 219.1 | 2.77 | 3.76 | 8.18 | 12.7 | 304.08 |
| 250 | 10’’ | 273.1 | 3.4 | 4.19 | 9.27 | 12.7 | 381.00 |
| 300 | 12’’ | 323.9 | 3.96 | 4.57 | 9.53 | 12.7 | 457.20 |
DN350 – DN1200
| Nominal Pipe Size | Outside Diameter | Thickness(mm) | Center to End(A, mm) | ||||
| DN | Inch | mm | SCH 10S | SCH 20S | STD | XS | |
| 350 | 14’’ | 355.6 | 4.78 | 7.92 | 9.53 | 12.7 | 533.04 |
| 400 | 16’’ | 406.4 | 4.78 | 7.92 | 9.53 | 12.7 | 609.6 |
| 450 | 18’’ | 457.2 | 4.78 | 7.92 | 9.53 | 12.7 | 685.8 |
| 500 | 20’’ | 508 | 5.54 | 9.53 | 9.53 | 12.7 | 762.0 |
| 550 | 22’’ | 558.8 | 5.54 | 9.53 | 9.53 | 12.7 | 838.2 |
| 600 | 24’’ | 609.6 | 6.35 | 9.53 | 9.53 | 12.7 | 914.4 |
| 650 | 26’’ | 660.4 | 7.92 | 12.7 | 9.53 | 12.7 | 990.6 |
| 700 | 28’’ | 711.2 | 7.92 | 12.7 | 9.53 | 12.7 | 1066.8 |
| 750 | 30’’ | 762 | 7.92 | 12.7 | 9.53 | 12.7 | 1143.0 |
| 800 | 32’’ | 812.8 | 7.92 | 12.7 | 9.53 | 12.7 | 1219.2 |
| 850 | 34’’ | 863.6 | 7.92 | 12.7 | 9.53 | 12.7 | 1295.4 |
| 900 | 36’’ | 914.4 | 7.92 | 12.7 | 9.53 | 12.7 | 1371.6 |
| 950 | 38’’ | 965.2 | 7.92 | – | 9.53 | 12.7 | 1447.8 |
| 1000 | 40’’ | 1016.0 | 7.92 | – | 9.53 | 12.7 | 1524.0 |
| 1050 | 42’’ | 1066.8 | 7.92 | – | 9.53 | 12.7 | 1600.2 |
| 1100 | 44’’ | 1117.6 | 7.92 | – | 9.53 | 12.7 | 1676.4 |
| 1150 | 46’’ | 1168.4 | 7.92 | – | 9.53 | 12.7 | 1752.6 |
| 1200 | 48’’ | 1219.20 | 7.92 | – | 9.53 | 12.7 | 1828.8 |
FAQs
1. What is the exact dimension formula for a 90° Long Radius (LR) elbow, and how does it compare to a Short Radius (SR) elbow?
A 90° Long Radius (LR) elbow has a center-to-face dimension equal to 1.5 times the nominal pipe size (1.5 x D). For example, a 4-inch LR elbow has a center-to-end distance of 6 inches (152.4 mm). Compared to Short Radius (1 x D) elbows, LR elbows feature a gentler curve that drastically reduces fluid friction loss, pressure drop, and internal wear, making them the default standard for most industrial piping layouts.
2. What manufacturing methods (seamless vs. welded) and bevel end types are available?
We produce seamless (SMLS) 90° LR elbows via cold forming or mandrel bending for high-pressure applications, as well as welded (WLD) elbows formed from stainless steel plate for larger pipe diameters. Standard supply includes factory-beveled ends (37.5° angle per ANSI/ASME B16.9) ready for field butt-welding, with socket-weld and threaded options available for forged high-pressure lines.
3. What quality control tests and material certifications guarantee quality and wall thickness uniformity?
Every production batch undergoes 100% Positive Material Identification (PMI) chemical verification and full solution heat treatment (annealing) to ensure maximum corrosion resistance. QC inspectors perform ultrasonic wall thickness testing along the outer arc (extrados) and inner bend (intrados) to verify compliance with ASME B16.9 minimum wall tolerances. Complete EN 10204 3.1 Material Test Reports (MTRs) are provided with every shipment.
4. What are your minimum order quantities (MOQ) and production lead times for international orders?
Factory production lead time is typically 30 to 45 days upon order confirmation and technical drawing approval. We offer flexible MOQs for standard sizes (such as 304/304L and 316/316L in Schedules 10S, 40S, and 80S), allowing international procurement teams to combine 90° LR elbows with tees, reducers, and flanges in a single container order.
5. How are 90° LR elbows packaged for long-distance ocean shipping, and what trade terms do you offer?
Bevel ends are protected with plastic end caps to prevent edge damage. Small to medium elbows are packed inside ISPM-15 heat-treated, seaworthy wooden cases lined with moisture-proof film. Large-diameter elbows are steel-strapped into heavy-duty wooden bundles or onto pallets with protective cushioning. We support EXW, FOB (Taiwan/China ports), CFR, CIF, and DDP commercial terms for sea or air freight.
Ready to plan your order?
Request a quote for stainless steel 90° LR stainless steel elbows with your size, grade, and quantity.