Forged Fittings
Forged Fittings: Specifications | Materials | Types | Dimensions | Weight Chart | Tolerances | FAQ
ASME B16.11 Forged Fittings Manufacturers, Suppliers & Exporters of Socket Weld & Threaded Fittings in Stainless Steel, Alloy Steel, Carbon Steel & High Nickel Alloys to Germany, Australia & African Countries
Best Export Prices: sales@midlandforgefittings.com
Midland Forge and Fittings Pvt. Ltd. is a trusted name in the manufacturing and supply of premium-quality forged fittings for diverse industrial applications. With years of expertise, advanced production facilities, and a highly skilled workforce, we deliver precision-engineered products that meet the most demanding international standards, including ASME B16.11, MSS-SP-79, and MSS-SP-83.
Our commitment to quality, timely delivery, and customer satisfaction has earned us long-standing partnerships with clients across industries such as oil & gas, petrochemicals, power generation, shipbuilding, and chemical processing.
As a forward-looking company, we focus on innovation, continuous improvement, and sustainability in our operations. Our in-house quality control team conducts rigorous testing at every stage of production to ensure that each forged fitting leaving our facility offers superior performance, durability, and reliability. With a strong global presence and a robust distribution network, Midland Forge and Fittings Pvt. Ltd. stands as a preferred partner for customers in North America, Europe, Asia, and Africa.
We manufacture and supply a comprehensive range of forged fittings, including Socket Weld and Threaded types, designed for high-pressure piping systems. Available in Stainless Steel, Carbon Steel, Alloy Steel, and High Nickel Alloys, our forged fittings are engineered to deliver leak-proof, high-strength connections that withstand extreme temperatures and pressures. We produce Elbows, Tees, Couplings, Unions, Caps, Plugs, and more, all crafted to meet global specifications and client requirements.
Forged Fittings are widely used in refineries, offshore platforms, power plants, and other critical operations where reliability and safety are paramount. With sizes ranging from 1/8” to 4” and pressure ratings from 2000# to 9000#, we ensure complete flexibility for your project needs. Every fitting undergoes stringent inspection processes, including dimensional checks, pressure testing, and NDT (Non-Destructive Testing), ensuring that our customers receive only the best products for their applications.
Forged Fitting Specifications
Forged Threaded Fittings – Materials, Grades & Standards
| Material Category | Grade | Standards (ASTM / ASME) | Typical Use / Application |
|---|---|---|---|
| Stainless Steel | 304 / 304L / 304H | ASTM A182 F304 / F304L / F304H | General purpose, corrosion resistance |
| 316 / 316L / 316H | ASTM A182 F316 / F316L / F316H | Marine, chemical, and food processing | |
| 317 / 317L | ASTM A182 F317 / F317L | High corrosion resistance | |
| 321 / 321H | ASTM A182 F321 / F321H | High temperature, stabilized service | |
| 347 / 347H | ASTM A182 F347 / F347H | High-temp, pressure systems | |
| 904L | ASTM A182 F904L | Acid handling, sulfuric environments | |
| 254 SMO | ASTM A182 F44 | High chloride & seawater applications | |
| Carbon Steel | A105 | ASTM A105 | Pressure piping & general industries |
| A350 LF2 | ASTM A350 LF2 | Low temperature services | |
| A694 F42 / F46 / F52 / F56 / F60 / F65 / F70 | ASTM A694 | High-pressure pipelines, oil & gas | |
| Alloy Steel | F1 / F5 / F9 | ASTM A182 F1 / F5 / F9 | High-temp & pressure pipelines |
| F11 / F22 | ASTM A182 F11 / F22 | Steam lines & refineries | |
| F91 | ASTM A182 F91 | Power generation, high performance | |
| Duplex Steel | UNS S31803 / S32205 | ASTM A182 F51 / F60 | Corrosion resistance, high strength |
| Super Duplex Steel | UNS S32750 / S32760 | ASTM A182 F53 / F55 | Offshore, seawater applications |
| Nickel Alloys | Nickel 200 / 201 | ASTM B564 | Alkali & chemical processing |
| Inconel 600 / 625 / 718 | ASTM B564 | Heat exchangers, aerospace | |
| Incoloy 800 / 825 | ASTM B564 | Petrochemical & chemical processing | |
| Hastelloy C22 / C276 | ASTM B564 | Severe corrosion resistance | |
| Monel 400 / K500 | ASTM B564 | Seawater, marine engineering | |
| Alloy 20 | ASTM B564 | Sulfuric acid services | |
| Nimonic 75 / 80A | ASTM B564 / B637 | High-temp aerospace & turbines | |
| Copper Nickel | Cu-Ni 90/10 / 70/30 | ASTM B151 / B467 | Marine systems, seawater service |
| Titanium | Grade 2 / Grade 5 | ASTM B381 | Lightweight, corrosion resistance |
| Aluminium | 6061 / 5083 | ASTM B247 | Low-pressure, non-corrosive piping |
Types of ASME B16.11 Forged Fittings
Dimensions of ASME B16.11 Socket Weld Fittings
| Nom, Pipe Size |
Depth of Sock, Min |
Sock, Bore Diameter B |
Bore Diameter of Fitting D | Wall Thickness Minimum | entre to Bottom of Socket | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 90º Elbows, Tee & Crosses | 45º Elbows | |||||||||||
| A | A | |||||||||||
| 3000# | 6000# | Sock, C | Body G | Sock C | Body G | 3000# | 6000# | 3000# | 6000# | |||
| 1/8” | 3/8 | .420
.430 |
.254
.284 |
.141 | .125 | .095 | .135 | .124 | 7/16 | 7/16 | 5/16 | 5/16 |
| 1/4 | 3/8 | .555
.565 |
.349
.379 |
.235 | .130 | .119 | .158 | .145 | 7/16 | 17/32 | 5/16 | 5/16 |
| 3/8 | 3/8 | .690
.700 |
.478
.508 |
.344 | .138 | .126 | .172 | .158 | 17/32 | 5/8 | 5/16 | 7/16 |
| 1/2 | 3/8 | .855
.865 |
.607
.637 |
.451 | .161 | .147 | .204 | .188 | 5/8 | 3/4 | 7/16 | 1/2 |
| 3/4 | 1/2 | 1.065
1.075 |
.809
.839 |
.599 | .168 | .154 | .238 | .219 | 3/4 | 7/8 | 1/2 | 9/16 |
| 1 | 1/2 | 1.330
1.340 |
1.034
1.064 |
.800 | .196 | .179 | .273 | .250 | 7/8 | 1-1/16 | 9/16 | 11/16 |
| 1-1/4 | 1/2 | 1.675
1.685 |
1.365
1.395 |
1.145 | .208 | .191 | .273 | .250 | 1-1/16 | 1-1/4 | 11/16 | 13/16 |
| 1-1/2 | 1/2 | 1.915
1.925 |
1.595
1.625 |
1.323 | .218 | .200 | .307 | .281 | 1-1/4 | 1-1/2 | 13/16 | 1 |
| 2 | 5/8 | 2.406
2.416 |
2.052
2.082 |
1.674 | .238 | .218 | .374 | .344 | 1-1/2 | 1-5/8 | 1 | 1-1/8 |
| 2-1/2 | 5/8 | 2.906
2.921 |
2.439
2.499 |
.301 | .276 | .375 | 1-5/8 | 1-1/8 | ||||
| 3 | 5/8 | 3.535
3.550 |
3.038
3.098 |
.327 | .300 | .438 | 2-1/4 | 1-1/4 | ||||
| 4 | 3/4 | 4.545
4.560 |
3.996
4.055 |
.368 | .337 | .531 | 2-5/8 | 1-5/8 | ||||
Dimensions of ASME B16.11 Threaded Fittings
| Nominal Pipe Size | End to End Couplings W | Outside Diameter D |
End to End Caps H |
End Wall Thickness G Min |
|||
|---|---|---|---|---|---|---|---|
| 3000# & 6000# |
3000# | 6000# | 3000# | 6000# | 3000# | 6000# | |
| 1/8 | 1-1/4 | 5/8 | 7/8 | 3/4 | 3/16 | ||
| 1/4 | 1-3/8 | 3/4 | 1 | 1 | 1-1/16 | 3/16 | 1/4 |
| 3/8 | 1-1/2 | 7/8 | 1-1/4 | 1 | 1-1/16 | 3/16 | 1/4 |
| 1/2 | 1-7/8 | 1-1/8 | 1-1/2 | 1-1/4 | 1-5/16 | 1/4 | 5/16 |
| 3/4 | 2 | 1-3/8 | 1-3/4 | 1-7/16 | 1-1/2 | 1/4 | 5/16 |
| 1 | 2-3/8 | 1-3/4 | 2-1/4 | 1-5/8 | 1-11/16 | 3/8 | 7/16 |
| 1-1/4 | 2-5/8 | 2-1/4 | 2-1/2 | 1-3/4 | 1-13/16 | 3/8 | 7/16 |
| 1-1/2 | 3-1/8 | 2-1/2 | 3 | 1-3/4 | 1-7/8 | 7/16 | 1/2 |
| 2 | 3-3/8 | 3 | 3-5/8 | 1-7/8 | 2 | 1/2 | 5/8 |
| 2-1/2 | 3-5/8 | 3-5/8 | 4-1/4 | 2-3/8 | 2-1/2 | 5/8 | 3/4 |
| 3 | 4-1/4 | 4-1/4 | 5 | 2-9/16 | 2-11/16 | 3/4 | 7/8 |
| 4 | 4-3/4 | 5-1/2 | 6-1/4 | 2-11/16 | 2-15/16 | 7/8 | 1-1/8 |
Weight Chart: ASME B16.11 Forged Fittings (Class 3000, 6000, 9000)
| Size (NPS) | Socket-Weld Class 3000 |
Socket-Weld Class 6000 |
Socket-Weld Class 9000 |
Threaded Class 2000 |
Threaded Class 3000 |
Threaded Class 6000 |
|---|---|---|---|---|---|---|
| 1/8″ | 0.09 kg | 0.15 kg | — | 0.21 kg | 0.23 kg | 0.56 kg |
| 1/4″ | 0.09 kg | 0.15 kg | — | 0.24 kg | 0.30 kg | 0.58 kg |
| 3/8″ | 0.12 kg | 0.32 kg | — | 0.47 kg | 0.58 kg | 0.91 kg |
| 1/2″ | 0.26 kg | 0.40 kg | 0.85 kg | 0.73 kg | 0.91 kg | 1.54 kg |
| 3/4″ | 0.35 kg | 0.65 kg | 1.48 kg | 1.03 kg | 1.29 kg | 2.25 kg |
| 1″ | 0.52 kg | 1.25 kg | 2.20 kg | 1.46 kg | 2.02 kg | 2.84 kg |
| 1¼″ | 0.85 kg | 1.40 kg | 2.90 kg | 1.77 kg | 2.29 kg | 5.12 kg |
| 1½″ | 1.05 kg | 2.35 kg | 3.50 kg | 3.03 kg | 4.54 kg | 6.82 kg |
| 2″ | 1.75 kg | 2.96 kg | 4.35 kg | 8.07 kg | 5.26 kg | 10.28 kg |
| 2½″ | 2.80 kg | — | — | 9.46 kg | 7.83 kg | 15.00 kg |
| 3″ | 4.60 kg | — | — | 24.57 kg | 12.99 kg | 35.20 kg |
| 4″ | 9.60 kg | — | — | — | 24.75 kg | — |
Forged Fitting Tolerances as per ASME B16.11
| Dimension / Parameter | Tolerance | Remarks / Reference |
|---|---|---|
| Center-to-End (A, B, C) | ± 1.5 mm | For Elbows, Tees, Crosses |
| Overall Length (Couplings, Caps) | ± 1.5 mm | As per ASME B16.11 |
| Socket Bore Diameter (B) | +0.15 mm / -0.00 mm | For Socket-Weld Ends |
| Outside Diameter at Welding End | ± 1.0 mm | |
| Wall Thickness | Not less than nominal specified | Minimum per standard |
| Thread Dimensions | As per ASME B1.20.1 | NPT Taper Pipe Threads |
| Socket Depth (Minimum) | As specified in ASME B16.11 | Varies with size & class |
How does the forging process improve the strength of forged fittings?
- Grain structure alignment: Forging refines and aligns the metal’s grain flow, which significantly improves its structural integrity.
- Elimination of defects: Removes internal voids, porosity, and other weaknesses common in casting processes.
- Increased mechanical properties: Enhances tensile strength, toughness, and wear resistance, making the fitting last longer under demanding conditions.
- Better fatigue resistance: Capable of withstanding repeated stress cycles without cracking or failing.
- Dimensional precision: Forged fittings maintain consistent tolerances, ensuring accurate fitment in critical applications.
Why are forged fittings preferred in high-pressure piping systems?
- Leak-proof sealing: Designed to maintain tight connections under extreme pressure.
- Superior strength: Can handle sudden pressure surges and thermal expansion without damage.
- Temperature resistance: Performs reliably in high-temperature steam or cryogenic services.
- Low maintenance: Their durability reduces the need for frequent repairs or replacements.
- Proven reliability: Used extensively in oil & gas, chemical, and power plants where safety is critical.
What factors should be considered when selecting forged fittings for a project?
- Pressure class: Choose fittings rated for the system’s maximum operating pressure.
- Material compatibility: Ensure the fitting material matches the pipe and fluid type.
- Connection type: Decide between socket weld and threaded based on installation needs.
- Standards compliance: Verify fittings meet ASME B16.11 or equivalent specifications.
- Environmental factors: Consider exposure to chemicals, seawater, or extreme temperatures.