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The High-Strength Stainless Steel BW (Butt-Weld) 90-Degree SR (Short Radius) Elbow is a space-saving pipe fitting designed for compact industrial piping systems where minimal installation space is critical. Constructed from 304 or 316 stainless steel, this elbow features a 1.0D radius and butt-weld ends (ANSI B16.25 compliant), balancing structural integrity with dimensional efficiency in tight layouts.
Space-Efficient Design:
Short-radius (1.0D) bend radius (e.g., 102mm for 4" NPS) reduces installation length by 30% compared to LR elbows, ideal for congested machinery rooms and offshore platforms.
Butt-weld ends with precision bevel (37.5°) for full-penetration welds, compliant with ASME B16.9 and suitable for both manual and automated welding processes.
High-Performance Materials:
304 stainless steel (ASTM A312) for general industrial use; 316 stainless steel (ASTM A316) for corrosive environments, with a minimum yield strength of 205 MPa.
Heat-treated (solution annealed) for uniform microstructure, enhancing resistance to stress corrosion cracking in high-pH applications.
Pressure & Temperature Ratings:
Rated for working pressures up to 2,000 PSI (schedule 80, 316 stainless steel) and temperatures from -46°C to 650°C, suitable for steam, oil, and gas systems.
Reinforced wall thickness at the bend (1.1x standard) compensates for increased stress in short-radius designs, ensuring long-term reliability.
Quality & Compliance:
100% visual and dimensional inspection, with optional hydrostatic testing (1.5x MAWP) and magnetic particle inspection (MPI) for critical applications.
Available in sizes 1" to 12" NPS, with custom coatings (e.g., epoxy, PTFE) for enhanced corrosion protection in marine environments.
Ideal for space-constrained industrial and commercial systems:
Oil & Gas Offshore: Compact piping in platform modules and subsea manifolds, with 316 stainless steel resisting H2S and seawater corrosion.
Power Plant Turbines: Steam lines in gas turbine enclosures, where limited space requires tight bends without compromising pressure ratings.
Industrial Machinery: Hydraulic and lubrication lines in presses and injection molding machines, with short-radius design facilitating close proximity to moving parts.
Commercial Buildings: HVAC condensate lines in ceiling voids and riser shafts, reducing space requirements in multi-story constructions.
Q: Is the SR elbow suitable for high-flow applications?
A: While SR elbows increase turbulence compared to LR elbows, they are suitable for moderate flow rates; use LR elbows for high-velocity systems (Reynolds number >40,000).
Q: Can these elbows be used in seismic zones?
A: Yes, but consult a structural engineer for additional bracing requirements, as short-radius elbows may experience higher stress during seismic events.
Q: What is the minimum recommended pipe support spacing for SR elbows?
A: Spacing should be 50% of the recommended LR elbow spacing to minimize sagging and stress on the bend, especially in horizontal runs.
Q: Are there fire-resistant coatings available?
A: Yes, intumescent fire-resistant coatings (ASTM E119 compliant) can be applied, providing 2-hour fire rating for critical pipeline connections.
The High-Strength Stainless Steel BW (Butt-Weld) 90-Degree SR (Short Radius) Elbow is a space-saving pipe fitting designed for compact industrial piping systems where minimal installation space is critical. Constructed from 304 or 316 stainless steel, this elbow features a 1.0D radius and butt-weld ends (ANSI B16.25 compliant), balancing structural integrity with dimensional efficiency in tight layouts.
Space-Efficient Design:
Short-radius (1.0D) bend radius (e.g., 102mm for 4" NPS) reduces installation length by 30% compared to LR elbows, ideal for congested machinery rooms and offshore platforms.
Butt-weld ends with precision bevel (37.5°) for full-penetration welds, compliant with ASME B16.9 and suitable for both manual and automated welding processes.
High-Performance Materials:
304 stainless steel (ASTM A312) for general industrial use; 316 stainless steel (ASTM A316) for corrosive environments, with a minimum yield strength of 205 MPa.
Heat-treated (solution annealed) for uniform microstructure, enhancing resistance to stress corrosion cracking in high-pH applications.
Pressure & Temperature Ratings:
Rated for working pressures up to 2,000 PSI (schedule 80, 316 stainless steel) and temperatures from -46°C to 650°C, suitable for steam, oil, and gas systems.
Reinforced wall thickness at the bend (1.1x standard) compensates for increased stress in short-radius designs, ensuring long-term reliability.
Quality & Compliance:
100% visual and dimensional inspection, with optional hydrostatic testing (1.5x MAWP) and magnetic particle inspection (MPI) for critical applications.
Available in sizes 1" to 12" NPS, with custom coatings (e.g., epoxy, PTFE) for enhanced corrosion protection in marine environments.
Ideal for space-constrained industrial and commercial systems:
Oil & Gas Offshore: Compact piping in platform modules and subsea manifolds, with 316 stainless steel resisting H2S and seawater corrosion.
Power Plant Turbines: Steam lines in gas turbine enclosures, where limited space requires tight bends without compromising pressure ratings.
Industrial Machinery: Hydraulic and lubrication lines in presses and injection molding machines, with short-radius design facilitating close proximity to moving parts.
Commercial Buildings: HVAC condensate lines in ceiling voids and riser shafts, reducing space requirements in multi-story constructions.
Q: Is the SR elbow suitable for high-flow applications?
A: While SR elbows increase turbulence compared to LR elbows, they are suitable for moderate flow rates; use LR elbows for high-velocity systems (Reynolds number >40,000).
Q: Can these elbows be used in seismic zones?
A: Yes, but consult a structural engineer for additional bracing requirements, as short-radius elbows may experience higher stress during seismic events.
Q: What is the minimum recommended pipe support spacing for SR elbows?
A: Spacing should be 50% of the recommended LR elbow spacing to minimize sagging and stress on the bend, especially in horizontal runs.
Q: Are there fire-resistant coatings available?
A: Yes, intumescent fire-resistant coatings (ASTM E119 compliant) can be applied, providing 2-hour fire rating for critical pipeline connections.
