Trusted manufacturer, exporter & supplier of Pipe Fittings (Buttweld Fittings) in Mumbai, India.
Alliance Steel Industries is a trusted manufacturer, exporter and supplier of high-quality Buttweld Pipe Fittings designed for demanding industrial piping applications. Our product range includes Elbows, Tees, Reducers, Crosses, Caps, Stub Ends, Bends and other special pipe fittings manufactured in various material grades, sizes and wall thicknesses.
Common industry specifications cover sizes from small-bore fittings through large-diameter piping applications, with exact size and schedule availability depending on fitting type, material and manufacturing method. Buttweld fittings are welded directly to pipes to create strong, reliable and leak-resistant piping connections. They are widely used in Oil & Gas, Petrochemical, Chemical, Power Generation, Refineries, Pharmaceutical, Food Processing, Water Treatment, Fertilizer and Engineering industries.
Our Buttweld Fittings are manufactured using quality raw materials and modern manufacturing processes to provide excellent dimensional accuracy, strength, corrosion resistance, and long service life. We offer a comprehensive range of fittings in various sizes, schedules, pressure classes, materials, and specifications to meet diverse industrial requirements.
Our buttweld fittings can be supplied as per applicable international specifications and customer requirements, including ASME/ANSI B16.9, ASME B16.25, ASME B16.28, MSS SP-43, ASTM, DIN and EN standards, subject to product type and material grade.
Pipe Fittings Specification
| Butt weld Fittings Dimensions | ASME B16.9, ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Seamless Fittings Size | 1/2" NB To 10" NB |
| Welded Fittings Size | 1/2" NB To 48" NB |
| Pipe Fitting Size | 1/8" NB TO 48" NB (Seamless, 100% X-Ray Welded, Fabricated) |
| Pipe Fittings Thickness | 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS available with NACE MR 01-75 |
| Type of Pipe Fittings | Seamless Fittings, Welded Fittings, Fabricated Fittings |
| Specialized manufacturer of Pipe Fittings | Pipe Bend, Cross, Tees, Elbow, 90º Elbows, 45º Elbows, Reducer, Stub End, Pipe Cap |
| Butt weld Fittings Form | Elbow, Tee, Cross, Reducer, End Cap, 45 Deg Elbow, 3d Elbow, 1.5d Elbow, 90 Deg Elbow, 5d Elbow, Reducing Elbow, Reducing Tee, Long Radius Elbow, 180 Deg Elbow, Short Stub End, 10d Elbow, Short Radius Elbow, Concentric Reducer, Eccentric Reducer, Bends, Piggable Bend, Reducing Nipple, U Bend, Equal Tee, Collar, Dish Cap, 180 Deg Bend, Long Stub End, Unequal Tee, Lateral Tee, etc |
| Butt weld Pipe Fittings Schedule | SCH10, SCH20, SCH30, SCH40, SCH60, SCH80, SCH120, SCH140, SCH160, STD, XS, XXS |
| Pipe Fittings Connection | Welding Connection |
| Available Materials of Pipe Fittings | Stainless Steel, Carbon Steel, Alloy Steel, Duplex Steel, Super Duplex Steel, High Nickel Alloy, Inconel, Incoloy, Monel, Hastelloy, Alloy 20, Titanium, Copper Nickel |
Key Features
Stainless Steel Buttweld Pipe Fittings
| Standards | ASTM A403 / ASME SA403 |
| Grades | WP – 201, 202, 301, 302, 304, 304L, 309, 310, 316, 316L, 316LN, 316Ti, 317L, 321, 347, 405, 409, 410, 420, 430, 440C, 904L. |
Alloy Steel Buttweld Fittings
| Standards | ASTM A335 / ASME SA335 |
| Grades | WP11, WP12, WP22, WP5, WP9, WP91. |
Carbon Steel Buttweld Fittings
| Standards | ASTM A234 / A420 / A860 |
| Grades | Gr. WPB, Gr. WPL-3, WPL-6, IS 1239, IS 3589, WPHY42, WPHY46, WPHY52, WPHY60, WPHY65, WPHY70 |
Duplex & Super Duplex Steel Buttweld Fittings
| Standards | ASTM A815 / ASME SA815 |
| Grades | 2205 (S31803 / S32205), SMO254 (S32154), 2507 (S32750 / S32760), Fe 255 (S32550). |
High Nickel Alloy Buttweld Fittings
| Standards | ASTM B366 / ASME SB366 |
| Grades | 200 (WPN, N02200), 201 (WPNL, N02201), Alloy 20 (WP20CB, N08020), 600 (WPNCI, N06600), 601 (N06601), 625 (WPNCMC, N06625), 718 (N07718), 800 (WPNIC, N08800), 800H (WPNIC10, N08810), 800HT (WPNIC11, N08811), 825 (WPNICMC, N08825), 904L (N08904), 400 (WPNC, N04400), 500 (N05500), C726 (WPHC276, N10276), C4 (WPHC4, N06455), C22 (WPHC22, N06022), C2000 (WPHC2000, N06200), X (WPHX, N06002), B2 (WPHB-2, N10665), B3 (WPHB-3, N10675) |
SMO 254 Buttweld Fittings
| Standards | ASTM A403 / ASME SA403 |
| Grade | SMO 254/UNS S31254 |
Copper Alloy Buttweld Fittings
| Grade | Commercial, ETP, OFE, CuNi 90/10 (C70600), CuNi 70/30 (C71500), Brass, Naval Brass, Aluminium Bronze, Admiralty Brass. |
Titanium Buttweld Fittings
| Standards | ASTM B363 / ASME SB363 |
| Grade | WPT2, WPT5 (Ti6AI4V), WPT7. |
Buttweld 45° Elbow
Buttweld 90° Elbow
Buttweld 180° Elbow
Buttweld Equal Tee
Concentric Reducer
Eccentric Reducer
LR Elbow
SR Elbow
End Pipe Cap
Stub End
Equal Cross
Reducing Tee
Pipes Fittings Weight/Size Chart Chart
| Nominal Pipe Size |
Outside Diameter |
90° Elbows | 45° Elbows | 180° Returns | ||||
|---|---|---|---|---|---|---|---|---|
| (inches) | Long Radius | Short Radius | Long Radius | Long Radius | ||||
| (mm) | (inches) | Center to Face (inches) |
Center to Face (inches) |
Center to Face (inches) |
Radius (inches) |
Center to Center (inches) |
Back to face (inches) |
|
| 1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | 2 | 1 7/8 | |
| 3/4 | 26.7 | 1.050 | 1 1/8 | – | 7/16 | 2 1/4 | 1 11/16 | |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | 3 | 2 3/16 | |
| 1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | 3 3/4 | 2 3/4 | |
| 1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
| 2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
| 2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
| 3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
| 3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
| 4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
| 5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
| 6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
| 8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
| 10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
| 12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
| Nominal Pipe Size |
Outside Diameter |
Caps | Straight Tees | Straight Crosses | Stub Ends | |||
|---|---|---|---|---|---|---|---|---|
| (inches) | (mm) | (inches) | Length (inches) |
Center to End (inches) |
Center to End (inches) |
Lap Diameter (inches) |
Long Length (inches) |
Short Length (inches) |
| 1/2 | 21.3 | 0.840 | 1 | 1 | – | 1 3/8 | 3 | 2 |
| 3/4 | 26.7 | 1.050 | 1 | 1 1/8 | – | 1 11/16 | 3 | 2 |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 1/2 | 1 1/2 | 2 | 4 | 2 |
| 1 1/4 | 42.2 | 1.660 | 1 1/2 | 1 7/8 | 1 7/8 | 2 1/2 | 4 | 2 |
| 1 1/2 | 48.3 | 1.900 | 1 1/2 | 2 1/4 | 2 1/4 | 2 7/8 | 4 | 2 |
| 2 | 60.3 | 2.375 | 1 1/2 | 2 1/2 | 2 1/2 | 3 5/8 | 6 | 2 1/2 |
| 2 1/2 | 73.0 | 2.875 | 1 1/2 | 3 | 3 | 4 1/8 | 6 | 2 1/2 |
| 3 | 88.9 | 3.500 | 2 | 3 3/8 | 3 3/8 | 5 | 6 | 2 1/2 |
| 3 1/2 | 101.6 | 4.000 | 2 1/2 | 3 3/4 | 3 3/4 | 5 1/2 | 6 | 3 |
| 4 | 114.3 | 4.500 | 2 1/2 | 4 1/8 | 4 1/8 | 6 3/16 | 6 | 3 |
| 5 | 141.3 | 5.563 | 3 | 4 7/8 | 4 7/8 | 7 5/16 | 8 | 3 |
| 6 | 168.3 | 6.625 | 3 1/2 | 5 5/8 | 5 5/8 | 8 1/2 | 8 | 3 1/2 |
| 8 | 219.1 | 8.625 | 4 | 7 | 7 | 10 5/8 | 8 | 4 |
| 10 | 273.1 | 10.750 | 5 | 8 1/2 | 8 1/2 | 12 3/4 | 10 | 5 |
| 12 | 323.9 | 12.750 | 6 | 10 | 10 | 15 | 10 | 6 |
International Standards of Buttweld Fittings
| Standard Code | Standard Name |
|---|---|
| American Steel Pipe Fittings Standard | |
| ANSI ASME SA-403 | Forged Durimet pipe fittings |
| ANSI ASME B16.9 | Factory-Made wrought steel pipe fittings |
| ANSI ASME B16.28 | Wrought steel butt-welding short radius elbows and returns |
| ISO 5251 | Stainless steel butt-welding fittings |
| MSS SP-43 | Wrought stainless steel butt-welding fittings |
| MSS SP-75 | Forging butt-welding fittings |
| German Steel Pipe Fittings Standard | |
| DIN 2605 | Steel butt-welding pipe fittings.elbows and bends |
| DIN 2615 | Steel butt-welding pipe fittings.tees |
| DIN 2616 | Steel butt-welding pipe fittings.reducers |
| DIN 2617 | Steel butt-welding pipe fittings.caps |
| Japanese Steel Pipe Fittings Standard | |
| JIS B2311 | Universal steel butt-welding pipe fittings |
| JIS B2312 | Steel butt-welding pipe fittings |
| JIS B2313 | Steel plate butt-welding pipe fittings |
| Other Steel Pipe Fittings Standard | |
| EN 1025 | 3 Butt-welding pipe fittings |
Buttweld Fittings Thickness Chart
| Product range and theoretical weights (kg) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| DN | Schedule 10S | Schedule 40S | Schedule 80S | ||||||
| 90° Elbow | 45° Elbow | Equal tee | 90° Elbow | 45° Elbow | Equal tee | 90° Elbow | 45° Elbow | Equal tee | |
| 8 | 0.02 | 0.01 | 0.03 | 0.03 | 0.02 | 0.06 | 0.04 | 0.03 | 0.07 |
| 10 | 0.03 | 0.02 | 0.05 | 0.03 | 0.02 | 0.03 | 0.06 | 0.04 | 0.09 |
| 15 | 0.06 | 0.03 | 0.09 | 0.08 | 0.04 | 0.10 | 0.10 | 0.05 | 0.14 |
| 20 | 0.07 | 0.03 | 0.13 | 0.08 | 0.04 | 0.17 | 0.11 | 0.05 | 0.20 |
| 25 | 0.14 | 0.08 | 0.28 | 0.15 | 0.11 | 0.29 | 0.22 | 0.14 | 0.38 |
| 32 | 0.23 | 0.11 | 0.49 | 0.26 | 0.17 | 0.59 | 0.40 | 0.23 | 0.68 |
| 40 | 0.30 | 0.17 | 0.68 | 0.40 | 0.23 | 0.86 | 0.51 | 0.29 | 1.02 |
| 50 | 0.50 | 0.25 | 0.85 | 0.70 | 0.4 | 1.28 | 0.91 | 0.59 | 1.59 |
| 65 | 0.85 | 0.48 | 1.41 | 1.40 | 0.77 | 2.19 | 1.81 | 0.99 | 3.13 |
| 80 | 1.25 | 0.63 | 1.77 | 2.20 | 1.08 | 3.31 | 2.97 | 1.50 | 4.45 |
| 90 | 1.70 | 0.75 | 2.67 | 2.83 | 1.42 | 4.08 | 4.00 | 2.00 | 5.44 |
| 100 | 2.10 | 1.08 | 3.46 | 4.47 | 2.09 | 5.27 | 6.18 | 2.81 | 7.71 |
| 150 | 5.45 | 2.72 | 8.07 | 10.89 | 5.44 | 10.99 | 16.32 | 8.16 | 13.61 |
| 200 | 10.20 | 5.33 | 15.65 | 21.54 | 10.77 | 20.91 | 33.11 | 16.56 | 28.12 |
| 250 | 18.15 | 9.75 | 26.46 | 38.56 | 19.27 | 35.38 | 51.71 | 25.86 | 49.90 |
| 300 | 25.80 | 13.62 | 39.46 | 59.42 | 29.71 | 62.14 | 79.38 | 39.69 | 83.91 |
Pipe Fittings Tolerance Chart
| Nominal Diameter | O.D.For Bevel End | I.D.For End | Wall Thickness | Elbow | Tee | Reducer | Cap | 180°Elbow | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DN | NPS | A | B | C | M | H | E | O | K | Roughness | |||
| 15-65 | 1/2-2 1/2 | +1.6/-0.8 | 0.8 | -12.50% | 1.6 | 1.6 | 1.6 | 1.6 | 1.6 | 3.2 | 6.4 | 6.4 | 0.8 |
| 80-100 | 3-4 | 1.6 | 1.6 | 6.4 | |||||||||
| 125-200 | 5-8 | +2.4/-1.6 | |||||||||||
| 250-450 | 10-18 | +4/-3.2 | 3.2 | 2.4 | 2.4 | 2.4 | 2.4 | 2.4 | 9.6 | ||||
| 500-600 | 20-24 | +6.4/-4.8 | 4.8 | 3.2 | 3.2 | 3.2 | 3.2 | 4.8 | 9.6 | ||||
| 650-750 | 26-30 | ||||||||||||
| 4.8 | 4.8 | 4.8 | 4.8 | ||||||||||
| 800-1200 | 32-48 | ||||||||||||
| 1250-1500 | 50-60 | +9.6/-6.4 | 6.4 | 9.6 | 9.6 | 9.6 | 9.6 | 9.6 | |||||
| 1550-1750 | 62-70 | +12.7/-9.6 | 9.6 | 12.7 | 12.7 | ||||||||
| 1800-2000 | 72-80 | +16/-12 | 12 | 16 | 16 | ||||||||
We Export this Pipe Fittingss to countries such as Afghanistan, Albania, Andorra, Austria, Bahrain, Bangladesh, Bhutan, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus, Croatia, Czech Republic, Denmark, Estonia, Egypt, Finland, France, Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia, Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Malaysia, Maldives, Mongolia, Myanmar (Burma), Nepal, North Korea, Netherlands, Norway, Oman, Poland, Portugal, Pakistan, Palestine, Philippines, Qatar, Russia, Romania, Russia, San Marino, Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland, Saudi Arabia, Singapore, South Korea, South Africa, Sri Lanka, Syria, Taiwan, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen.
We Supply Pipe Fittings to cities including Mumbai, Delhi, Kolkata, Chennai, Bengaluru, Hyderabad, Ahmadabad, Pune, Surat, Jaipur, Kanpur, Lucknow, Nagpur, Ghaziabad, Indore, Coimbatore, Kochi, Patna, Kozhikode, Bhopal, Thrissur, Vadodara, Agra, Malappuram, Thiruvananthapuram, Kannur, Ludhiana, Nashik, Vijayawada, Madurai, Varanasi, Meerut, Faridabad, Rajkot, Jamshedpur, Srinagar, Jabalpur, Asansol, Vasai Virar City, Allahabad, Dhanbad, Aurangabad, Amritsar, Jodhpur, Ranchi, Raipur, Kollam, Gwalior, Durg-Bhilainagar, Chandigarh, Tiruchirappalli, Kota.