Stainless Steel Tees, Stainless Steel Elbows

Stainless Steel Tees and Stainless Steel Elbows – High-Performance Pipe Fittings for Demanding Systems

Brass & Copper Parts offers an extensive range of Stainless Steel Tees and Elbows engineered to redirect and branch fluid flow in piping systems operating under high temperatures, pressures, and corrosive conditions. Available in both threaded (BSP, NPT) and socket-weld/butt-weld configurations, our stainless steel tees and elbows are precision-manufactured from certified stainless steel bar, pipe, and forged blanks to ensure dimensional accuracy and structural integrity.

Whether you require standard 90° long-radius elbows, 45° elbows, equal tees, reducing tees, or cross fittings, Brass & Copper Parts maintains comprehensive stock and custom manufacturing capabilities to serve process plants, oil & gas installations, pharmaceutical lines, food-grade systems, and marine applications.

Product Range

• 90° Elbow (Long Radius & Short Radius): Smooth directional change with minimal pressure drop. Long-radius preferred for pipelines; short-radius for space-constrained installations.
• 45° Elbow: Used where gradual directional change is required, reducing turbulence and flow resistance.
• Equal Tee: All three outlets of the same nominal bore — used for straight branch connections.
• Reducing Tee: Branch outlet of smaller size than the run pipe — connects smaller branch lines to larger mains.
• Cross (4-Way) Fitting: Four-outlet fitting for intersecting pipe runs.
• Street Elbow: One male and one female end for compact installations without nipple extensions.

Material Grades & Specifications

Dimensional Reference – Stainless Steel Elbows

Dimensional Reference – Stainless Steel Tees (Equal)

Connection Types Available

• Butt Weld (BW): For permanent, high-integrity welded piping systems. Full penetration weld ensures maximum strength.
• Socket Weld (SW): For smaller bore high-pressure systems (DN 6–DN 50). Fillet welded connection.
• Threaded (NPT / BSP): Screwed connections for maintenance-friendly, low-to-medium pressure applications.
• Tri-Clamp / Sanitary: Hygienic clamp-end fittings for pharmaceutical and food processing lines.

Related Terms & Product Variants

Our stainless steel pipe fittings catalogue covers a wide variety of product types, grades, and connection styles. Below are common related terms and variants that customers frequently search for when sourcing SS tees and elbows from us.

Stainless Steel 316 Elbows

SS 316 Elbows are manufactured from Grade 316 / 316L stainless steel, offering superior resistance to chloride attack, pitting, and crevice corrosion compared to standard 304 grade. SS 316 Elbows are the preferred choice for chemical processing, pharmaceutical, marine, and coastal piping systems. Available in 90° long-radius (LR), 90° short-radius (SR), and 45° configurations in butt weld, socket weld, and threaded ends as per ASME B16.9 and B16.11.

Stainless Steel 316 Tees

SS 316 Tees provide excellent resistance to intergranular corrosion and are suitable for use in food-grade, beverage, pharmaceutical, and offshore piping applications. Stainless Steel 316 Tees are available as equal tees, reducing tees, and cross fittings, with connection types including butt weld, socket weld, NPT threaded, and BSP threaded ends. Manufactured to ASME B16.9 / B16.11 with EN 10204 3.1 MTCs on request.

Stainless Steel Threaded Elbows

Stainless Steel Threaded Elbows (also called screwed elbows) feature internal NPT (National Pipe Tapered) or BSP (British Standard Pipe) threads for tool-free assembly and maintenance-friendly connections. SS Threaded Elbows are widely used in instrumentation lines, utility piping, compressed air systems, and low-to-medium pressure process lines. Available in 90° and 45° angles in SS 304, 316, and 316L grades, in sizes from 1/8″ to 4″ BSP / NPT.

Stainless Steel Threaded Tees

SS Threaded Tees (screwed tees) provide branch connections in piping systems using threaded joints, eliminating the need for welding. Available in equal and reducing configurations with NPT or BSP threads, Stainless Steel Threaded Tees are commonly used in water treatment, HVAC, and general utility systems. Manufactured in SS 304, 304L, 316, and 316L grades to ASME B16.11 and IS 1239 standards.

Stainless Steel 304 Elbows

SS 304 Elbows are a general-purpose stainless steel fitting used extensively in water supply, food processing, dairy, and chemical plants. Stainless Steel 304 Elbows offer good corrosion resistance in atmospheric and mildly corrosive environments. Available in 90° LR, 90° SR, and 45° designs with butt weld, socket weld, and threaded ends. Suitable for temperatures up to 870°C in intermittent service and manufactured per ASME B16.9 / B16.11.

Stainless Steel 304 Tees

SS 304 Tees are one of the most widely used pipe fittings for branching fluid lines in industrial and commercial piping systems. Stainless Steel 304 Tees are available in equal and reducing configurations, butt weld and socket weld ends, and are manufactured to ASME B16.9 / B16.11. Ideal for potable water systems, food industry pipelines, and chemical plant utilities where moderate corrosion resistance is adequate.

Stainless Steel Socket Weld Elbows

Stainless Steel Socket Weld Elbows are used in small bore, high-pressure piping systems (typically DN 6 to DN 50) where a fillet welded socket connection is required. The pipe is inserted into the socket and fillet welded, providing a strong, reliable joint suitable for hydraulic, steam, and high-pressure gas lines. Available in 90° and 45° bends in SS 304, 316, and 316L to ASME B16.11.

Stainless Steel Socket Weld Tees

SS Socket Weld Tees are branch fittings for small bore high-pressure piping where butt welding is not practical. Stainless Steel Socket Weld Tees accept pipe into the socket end and are fillet welded for a permanent, pressure-tight connection. Available in equal and reducing configurations in SS 304, 316, 321, and Duplex grades to ASME B16.11 for instrumentation, hydraulic, and process lines.

Stainless Steel Butt Weld Elbows

SS Butt Weld Elbows provide a fully welded, permanent, and high-integrity joint for critical piping systems in oil & gas, petrochemical, and power generation plants. Stainless Steel Butt Weld Elbows are available in 90° long-radius and short-radius, and 45° styles, manufactured to ASME B16.9. Available in schedules SCH 5S, 10S, 40S, 80S, and 160 in all major stainless and duplex grades with bevelled weld ends.

Stainless Steel Butt Weld Tees

SS Butt Weld Tees are seamless or welded branch fittings for permanent piping installations. Manufactured to ASME B16.9, Stainless Steel Butt Weld Tees are available in equal and reducing configurations across a wide size range from DN 15 to DN 600. Butt weld ends are bevelled per ASME B16.25 to facilitate TIG/MIG welding. Available in SS 304L, 316L, 321, 347, Duplex 2205, and Super Duplex 2507 with MTCs.

Stainless Steel 90 Degree Elbows

SS 90 Degree Elbows are the most commonly used elbow type, changing pipe direction by 90° in a compact layout. Available as long-radius (centre-to-end = 1.5D) and short-radius (centre-to-end = 1D) types, Stainless Steel 90 Degree Elbows are manufactured from SS 304, 316, 316L, 321, Duplex and Super Duplex material. Used in process piping, HVAC, and water distribution systems per ASME B16.9 / B16.11.

Stainless Steel 45 Degree Elbows

SS 45 Degree Elbows offer a gentler change in pipe direction, reducing turbulence and pressure drop compared to 90° elbows. Stainless Steel 45 Degree Elbows are used where space permits a gradual directional transition and are available in butt weld, socket weld, and threaded ends. Commonly specified for pump suction lines, offshore pipelines, and general process piping in SS 304, 316, and 316L grades to ASME B16.9.

Stainless Steel Reducing Tees

SS Reducing Tees (also called unequal tees) have a branch outlet of smaller diameter than the run pipe, allowing smaller branch lines to connect to larger main headers. Stainless Steel Reducing Tees are available in butt weld and socket weld configurations, manufactured in SS 304, 316, 316L, and Duplex 2205 to ASME B16.9 / B16.11. Widely used in process plants, water treatment facilities, and chemical distribution headers.

Stainless Steel Equal Tees

SS Equal Tees have all three outlets of the same nominal bore, used for straight branch connections where all lines carry the same pipe size. Stainless Steel Equal Tees are available in butt weld, socket weld, and threaded ends in a full range of sizes from DN 6 to DN 600. Manufactured in SS 304, 316, 321, and Duplex grades to ASME B16.9 and B16.11 with full traceability documentation available.

Stainless Steel Cross Fittings

SS Cross Fittings (four-way tees) provide intersecting pipe connections in a single fitting body, eliminating multiple joints in cross-flow piping configurations. Stainless Steel Cross Fittings are available in equal-bore and reducing configurations with butt weld, socket weld, and threaded ends. Manufactured in SS 304, 316, 316L, and 321 grades to ASME B16.11, used in fire suppression systems, water distribution networks, and process plants.

Stainless Steel Street Elbows

SS Street Elbows (also called service elbows) have one male threaded end and one female threaded end, allowing direct connection without a nipple extension. Stainless Steel Street Elbows are ideal for compact, space-saving threaded piping installations in instrumentation, plumbing, and utility systems. Available in 90° and 45° angles in SS 304 and 316 grades with NPT and BSP threading to ASME B16.11 and BS 3799.

Duplex Stainless Steel Elbows

Duplex Stainless Steel Elbows in Grade 2205 (UNS S32205) combine the strength of ferritic steel with the corrosion resistance of austenitic steel, offering twice the yield strength of standard 304/316 grades. Duplex SS Elbows provide excellent resistance to chloride stress corrosion cracking and are used in offshore platforms, desalination plants, and subsea piping. Available in 90° LR, 90° SR, and 45° butt weld configurations to ASME B16.9 up to DN 600.

Duplex Stainless Steel Tees

Duplex Stainless Steel Tees in Grade 2205 or Super Duplex 2507 are engineered for demanding offshore, chemical, and subsea applications where both high strength and superior corrosion resistance are required. Duplex SS Tees are available in equal and reducing configurations, butt weld ends, sizes from DN 15 to DN 600, and are manufactured with NACE MR0175 / ISO 15156 compliance for sour service environments on request.

Industry Applications

Stainless steel tees and elbows from Brass & Copper Parts are used extensively in oil refineries and petrochemical plants, water and wastewater treatment systems, pharmaceutical and biopharmaceutical manufacturing, food and beverage processing, power generation (boiler and turbine pipework), shipbuilding and marine installations, cryogenic systems, and pulp & paper processing. Their superior corrosion resistance and compliance with international piping standards make them the preferred choice for engineers and procurement teams worldwide.

Standards & Compliance

• Dimensional: ASME B16.9 (Butt Weld), ASME B16.11 (Socket Weld & Threaded)
• Material: ASTM A403 (Austenitic), ASTM A815 (Duplex / Super Duplex)
• Testing: RT, UT, PMI, Dye Penetrant, Hydrostatic per customer requirement
• Heat Treatment: Solution annealed and quenched per ASTM A-1016
• Surface Finish: Pickled & passivated, electropolished, mirror polished on request
• Certifications: EN 10204 3.1 / 3.2 MTCs available

Frequently Asked Questions (FAQ)

Q1. What is the difference between long-radius (LR) and short-radius (SR) elbows?

A long-radius (LR) elbow has a center-to-end distance equal to 1.5 times the nominal pipe diameter, which allows a gentler change of direction with lower pressure drop and turbulence. A short-radius (SR) elbow has a center-to-end distance equal to 1 times the nominal diameter, making it more compact but with greater flow resistance. LR elbows are preferred for most process piping; SR elbows are used in tight installations where space is critical.

Q2. Can I use SS 304 elbows and tees in marine or offshore service?

While SS 304 has good general corrosion resistance, it is susceptible to pitting and crevice corrosion in high-chloride environments such as seawater. For marine, offshore, and coastal installations, we strongly recommend SS 316L, Duplex 2205, or Super Duplex 2507 grades, which offer significantly better resistance to chloride-induced stress corrosion cracking.

Q3. Are your stainless steel tees and elbows suitable for high-temperature service?

Yes. Standard austenitic grades (304, 316) are rated up to 870°C in air. For service above 600°C or in oxidizing/carburizing environments, we recommend SS 321 or SS 347 (stabilized grades) to prevent sensitization and inter-granular corrosion. Duplex grades are generally limited to service below 300°C.

Q4. Do you supply NACE-compliant fittings for sour service?

Yes. We can supply stainless steel tees and elbows compliant with NACE MR0175 / ISO 15156 for hydrogen sulfide (H2S) sour service environments. Please specify NACE compliance when placing your enquiry, along with the H2S partial pressure and temperature conditions.

Q5. What documentation and certifications do you provide?

We supply EN 10204 3.1 and 3.2 material test certificates, dimensional inspection reports, heat treatment certificates, NDE reports (RT/UT/DPT), and NACE / PED compliance declarations as applicable. Custom documentation packages can be prepared per client QA requirements.

Q6. What is the minimum order quantity for stainless steel tees and elbows?

There is no fixed minimum order quantity for standard sizes. We supply from single pieces for maintenance and repair to bulk quantities for plant construction projects. Custom-fabricated fittings may have a minimum batch requirement depending on tooling and material procurement.

Why Choose Brass & Copper Parts for SS Tees & Elbows?

Our manufacturing and quality processes are designed to meet the demands of critical industrial applications. From certified raw material sourcing to final dimensional inspection and hydrostatic testing, every fitting is traceable from heat to dispatch. We support projects from concept through completion with technical drawings, material recommendations, and competitive pricing for both standard and bespoke pipe fittings.