BB Infras is one of the most reputed and trusted suppliers, stockists, and exporters of high-quality Buttweld Pipe Fittings used across oil & gas, refinery, petrochemical, chemical, water treatment, marine, construction, and power generation industries. Our wide range includes elbows, tees, reducers, caps, crosses, stub ends, and long/short-radius pipe bends manufactured as per ASME, ASTM, MSS-SP & international dimensional standards.
As a global supplier, BB Infras maintains a large inventory of Carbon Steel, Stainless Steel, Alloy Steel, Duplex & Super Duplex, Nickel Alloy and Galvanized Buttweld Fittings in all sizes, schedules and pressure classes. We supply these fittings to major EPC contractors, fabrication companies and industrial projects in India as well as the Middle East, Europe, Africa, and Southeast Asia.

All our buttweld fittings are produced from high-grade raw materials using advanced manufacturing processes such as hot forming, cold forming, mandrel bending and heat treatment to ensure superior mechanical strength, weldability, corrosion resistance and dimensional accuracy. Every fitting is subjected to stringent quality checks, NDT testing, PMI and certification to meet global project requirements.
The buttweld construction provides smooth, leak-proof, and permanent joints, making these fittings ideal for high-pressure, high-temperature, and corrosive service environments. Their seamless flow transition minimizes pressure losses and reduces turbulence within the pipeline system, increasing overall efficiency and service life.
BB Infras supplies fittings in all standard types: 45°/90°/180° elbows, equal & reducing tees, concentric & eccentric reducers, long & short stub ends, pipe caps, crosses, and bends. Custom-fabricated fittings for heavy-wall, non-standard radius or project-specific designs are also available on request.
| Characteristic | Details / Typical Options |
|---|---|
| Valve Types | Gate, Globe, Ball, Check, Swing Check, Lift Check, Butterfly, Plug, Needle, Pressure Relief / Safety, Control Valves |
| Materials | Carbon Steel (A105/A216), Stainless Steel (304/316/316L/CF8/CF8M), Alloy Steel (4140, 1.25Cr-0.5Mo, 2.25Cr-1Mo), Duplex (2205), Super Duplex (2507), Inconel (625/718), Hastelloy C276, Monel, Bronze, Brass, PVC/CPVC/PP/PTFE-lined |
| Standards | API 600/602/603, API 598 (testing), ASME B16.34, ANSI, ISO 5208, EN 12266 |
| End Connections | Flanged (RF/RTJ), Buttweld, Socket Weld, Threaded (NPT/BSP), Tri-clamp (sanitary) |
| Pressure Ratings | Class 150 to 2500, PN6 to PN420, API pressure classes, special high-pressure designs |
| Actuation | Manual handwheel, gearbox, pneumatic, electric, hydraulic, spring-return (for safety valves) |
| Testing & Documents | MTC/EN 10204 3.1, PMI, hydrostatic/seat test to API/ISO, NDT (RT/UT/DP) on request |
Note: Typical compositions — refer to mill TDS / standard for exact limits.
| Material | Key Elements (typical) |
|---|---|
| SS 304 | C ≤0.08, Cr 18–20%, Ni 8–10.5% |
| SS 316 | C ≤0.08, Cr 16–18%, Ni 10–14%, Mo 2–3% |
| Carbon Steel (A105 / A216) | C ≤0.35, Mn 0.6–1.2%, Si 0.1–0.35% |
| Alloy Steel (4140) | C 0.38–0.45%, Cr 0.8–1.1%, Mo 0.15–0.25% |
| Duplex 2205 | Cr 22–23%, Ni 4–6%, Mo ~3%, N 0.14–0.20% |
| Super Duplex 2507 | Cr 24–26%, Ni 6–8%, Mo 3–5%, N 0.24–0.30% |
| Inconel 625 | Ni balance (~58% min Ni), Cr ~20–23%, Mo+Nb additions |
| Hastelloy C276 | Ni 50%+, Mo 15–17%, Cr 14–18% |
| Bronze / Brass | Cu >60%, Zn / Sn additions depending on alloy |
| PVC / CPVC / PP | Polymer base with stabilizers or chlorination — non-metallic |
| Material | Tensile Strength (MPa) | Yield (MPa) | Elongation (%) |
|---|---|---|---|
| SS 304 / 316 | 500–700 | 205–310 | 35–50 |
| Carbon Steel A105 | 415–585 | 205–310 | 20–30 |
| Alloy 4140 (quenched & tempered) | 700–1100 | 450–900 | 10–20 |
| Duplex 2205 | 620–850 | 450–620 | 25–35 |
| Inconel 625 | 800–1100 | 400–620 | 30–40 |
| Bronze / Brass | 300–600 | 100–300 | 15–40 |
| Common Name | Typical Equivalents / Notes |
|---|---|
| SS304 | AISI 304 / UNS S30400 / EN 1.4301 |
| SS316 | AISI 316 / UNS S31600 / EN 1.4401 |
| Carbon Steel A105 | ASME SA105 / EN 10222 equivalents where applicable |
| Alloy 4140 | EN 42CrMo4 / DIN 1.7225 / UNS G41400 |
| Duplex 2205 | UNS S32205 / EN 1.4462 |
| Super Duplex 2507 | UNS S32750 / EN 1.4410 |
| Inconel 625 | UNS N06625 |
| Hastelloy C276 | UNS N10276 |
| Bronze / Brass | EN/ASTM bronze/brass alloy designations (e.g. C83600 / C36000 etc.) |
The following are typical example dimensions — consult ASME B16.10 / manufacturer datasheets for precise face-to-face lengths and flange drilling details for each valve type and class.
| Valve Type | Nominal Size (NPS) | Typical Face-to-Face (mm) | Typical Flange / End |
|---|---|---|---|
| Gate Valve (rising stem) | 1/2", 1", 2" | 125 (1/2"), 178 (1"), 254 (2") | Flanged / BW / Threaded |
| Globe Valve | 1/2", 1", 2" | 140, 200, 300 | Flanged / BW |
| Ball Valve (floating) | 1/2", 1", 2", 4" | 51, 65, 95, 152 | Flanged / Threaded / BW |
| Butterfly Valve (wafer) | 2", 4", 8" | — (compact wafer) | Wafer / Lug / Flanged |
| Check Valve (swing) | 1", 2", 4" | 108, 152, 254 | Flanged / BW |
With strong industry experience, competitive pricing, and ready stock availability, BB Infras has become a preferred source for buttweld fittings in India and worldwide. Whether it is a single replacement item or a large-scale project requirement, we ensure timely delivery, consistent quality, and complete technical support.
Valves are essential components used in piping systems to ensure safe, leak-free, and efficient fluid or gas transfer across various industries. They connect, control, regulate, and support pipelines operating under different temperature and pressure conditions.
Valves are widely used in onshore and offshore drilling operations, refinery pipeline systems, gas distribution networks, and high-pressure fluid transfer. Their corrosion resistance and temperature tolerance make them ideal for harsh environments.
These fittings are crucial in chemical processing plants, acid/alkali lines, solvent transfer systems, and hazardous chemical handling. Materials are selected based on corrosion resistance and compatibility with chemicals.
Valves are used in boiler lines, steam pipelines, turbine systems, and cooling water networks. They withstand high pressure and extreme temperatures in thermal, nuclear, and renewable energy plants.
Applications include RO systems, filtration units, pumping stations, and municipal water supply lines. Fittings provide durability, corrosion resistance, and long-term leak-proof performance.
Stainless steel sanitary fittings ensure hygienic flow in dairy units, breweries, beverage manufacturing, and food processing systems. They prevent contamination and meet high hygiene standards.
Valves are used in cleanroom piping, purified water systems, drug manufacturing units, and sterile processing operations. They comply with GMP and maintain contamination-free fluid handling.
Used in firefighting systems, HVAC networks, plumbing systems, and building pipelines. Valves ensure reliable flow and structural stability across large infrastructure projects.
Marine-grade fittings are used in seawater pipelines, ballast systems, and fuel/oil transfer lines. They offer high resistance to corrosion in saltwater environments.
Essential for fuel injection lines, hydraulic systems, coolant pipelines, and high-pressure circuits. They withstand vibration, heat, and pressure fluctuations in vehicles and aircraft.
Valves are used in slurry pipelines, ore processing systems, and high-abrasion environments. Alloy steel fittings provide strength, wear resistance, and durability.
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