ANSI B16.11 Forged Fittings Manufacturer & Exporter
ANSI B16.11 forged fitting is a high-pressure socket weld and threaded fitting that is mainly made to meet the different standards like ASME/ANSI B16.11 to match its rating, dimension, tolerance, marking, and material requirements. This material comes in different classes, such as 2000, 3000, and 6000 for the threaded end fitting, and for socket weld and fitting, 3000, 6000, and 9000 classes are used. These fittings come in different covers from NPS ⅛" to 4 in different materials such as carbon steel, stainless steel, and high-nickel alloys. Amardeep Steel is the most reliable and trusted manufacturer and supplier of ANSI B16.11 forged fittings in India. All of our products are made with high-precision machining with full traceability and quality certificate EN 10204 3.1 Mill test certificate with on-time delivery in different industries such as oil & gas, chemical, power generation, and marine industries across 40+ countries.
Socket Weld vs Threaded Forged Fittings
Socket Weld Forged Fittings
Socket Weld Forged Fittings are high-pressure pipe fittings that are used to join small-diameter pipelines by inserting the pipe into a recessed socket and welding a fillet around the joint. These fittings are manufactured based on the ANSI B16.11 Forged Fittings to compensate for a smooth internal bore, which reduces turbulence and the risks of leakage in important systems. They are often called ANSI B16.11 forged fittings or ASME B16 11 fittings and are commonly used in industries where tight and strong connections that are not leaky are required. These ANSI B 16.11 pipe fittings come in pressure classes 3000, 6000, and 9000 and are normally used in specific pipe schedules; they are applicable in high-pressure steam lines, chemical injection systems, and oil and gas instrumentation services.
Threaded Forged Fittings
Threaded Forged Fittings are small diameter pipe fittings that are made to fit two pipelines having threaded ends like NPT, BSP, BSPT, or metric threading such that they can be fitted and removed easily without welding or cutting. These fittings are manufactured by ANSI B16.11 standards, and can be useful in an application where it needs to be serviced or disassembled regularly. They are available normally in the sizes up to 2 inches, but larger sizes may be available by request. They are available with pressure classes 2000, 3000 and 6000 that are paired with the respective pipe schedules to guarantee pressure integrity. Threaded Forged Fittings are common in low to medium pressure systems like utility lines, instrument connections and chemical process piping where flex and maintenance are of utmost importance.
Feature |
Socket Weld Fittings |
Threaded Fittings |
Pressure Classes |
3000 / 6000 / 9000 |
2000 / 3000 / 6000 |
Size Range |
½" to 4" |
⅛" to 4" (6" on request) |
Connection Method |
Fillet weld |
Threaded / Screwed |
Disassembly |
Permanent (Cut required) |
Removable (Tool-assisted) |
Internal Bore |
Smooth — no crevice |
Thread pocket present |
Ideal For |
High-pressure, leak-critical service |
Maintenance-access lines |
Standard |
ASME B16.11 |
ASME B16.11 + B1.20.1 |
ANSI B16.11 Pressure Classes Chart
ANSI B16.11 Forged Fittings are designated by pressure class, which determines the maximum allowable working pressure and the corresponding pipe schedule. The class system is different for threaded and socket-weld end types that information is given below.
Type |
Class 2000 |
Class 3000 |
Class 6000 |
Class 9000 |
Equivalent Pipe Schedule |
Threaded |
✔ |
✔ |
✔ |
— |
Sch 80 / 160 / XXS |
Socket Weld |
— |
✔ |
✔ |
✔ |
Sch 80 / 160 / XXS |
Weight Chat of ANSI B16.11 Forged Fittings
The ANSI B16.11 stainless steel forged fitting depends on the types of fitting, whether it’s threads or socket weld fitting. The weight chart of these two fitting is given below.
Socket Weld Forged Fittings
Nominal Size |
45° Elbow (3000) |
45° Elbow (6000) |
45° Elbow (9000) |
90° Elbow (3000) |
90° Elbow (6000) |
90° Elbow (9000) |
Tee (3000) |
Tee (6000) |
Tee (9000) |
Cross (3000) |
Cross (6000) |
Cross (9000) |
Coupling (3000) |
Coupling (6000) |
Coupling (9000) |
Half Coupling (3000) |
Half Coupling (6000) |
Half Coupling (9000) |
Cap (3000) |
Cap (6000) |
Cap (9000) |
3/8 |
0.08 | 0.12 | 0.19 |
0.09 | 0.14 | — |
0.12 | 0.20 | — |
0.16 | 0.24 | — |
0.05 | 0.08 | — |
0.05 | 0.08 | — |
0.05 | 0.08 | — |
1/2 |
0.13 | 0.20 | 0.29 |
0.15 | 0.22 | 0.33 |
0.20 | 0.31 | 0.46 |
0.26 | 0.39 | 0.58 |
0.09 | 0.13 | 0.19 |
0.09 | 0.13 | 0.19 |
0.09 | 0.13 | 0.19 |
3/4 |
0.21 | 0.32 | 0.48 |
0.24 | 0.36 | 0.53 |
0.33 | 0.50 | 0.75 |
0.41 | 0.63 | 0.94 |
0.14 | 0.21 | 0.31 |
0.14 | 0.21 | 0.31 |
0.14 | 0.21 | 0.31 |
1 |
0.34 | 0.51 | 0.76 |
0.38 | 0.57 | 0.86 |
0.53 | 0.80 | 1.20 |
0.67 | 1.00 | 1.51 |
0.22 | 0.34 | 0.51 |
0.22 | 0.34 | 0.51 |
0.22 | 0.34 | 0.51 |
1 1/4 |
0.54 | 0.81 | 1.22 |
0.60 | 0.91 | 1.36 |
0.84 | 1.27 | 1.90 |
1.06 | 1.60 | 2.40 |
0.36 | 0.54 | 0.81 |
0.36 | 0.54 | 0.81 |
0.36 | 0.54 | 0.81 |
1 1/2 |
0.86 | 1.29 | 1.94 |
0.96 | 1.44 | 2.16 |
1.35 | 2.02 | 3.03 |
1.69 | 2.54 | 3.81 |
0.57 | 0.86 | 1.29 |
0.57 | 0.86 | 1.29 |
0.57 | 0.86 | 1.29 |
2 |
1.38 | 2.08 | 3.12 |
1.54 | 2.31 | 3.46 |
2.16 | 3.23 | 4.84 |
2.71 | 4.06 | 6.09 |
0.92 | 1.38 | 2.07 |
0.92 | 1.38 | 2.07 |
0.92 | 1.38 | 2.07 |
2 1/2 |
2.21 | — | — |
2.46 | — | — |
3.44 | — | — |
4.33 | — | — |
— | — | — |
— | — | — |
— | — | — |
3 |
3.53 | — | — |
3.93 | — | — |
5.50 | — | — |
6.92 | — | — |
— | — | — |
— | — | — |
— | — | — |
4 |
5.66 | — | — |
6.29 | — | — |
8.80 | — | — |
11.08 | — | — |
— | — | — |
— | — | — |
— | — | — |
Threaded Forged Fittings
Nominal Size |
45° Elbow (2000) |
45° Elbow (3000) |
45° Elbow (6000) |
90° Elbow (2000) |
90° Elbow (3000) |
90° Elbow (6000) |
Tee (2000) |
Tee (3000) |
Tee (6000) |
Cross (2000) |
Cross (3000) |
Cross (6000) |
Coupling (3000) |
Coupling (6000) |
Half Coupling (3000) |
Half Coupling (6000) |
Cap (3000) |
Cap (6000) |
3/8 |
0.06 | 0.16 | 0.33 |
0.07 | 0.12 | 0.18 |
0.09 | 0.16 | 0.25 |
0.12 | 0.21 | 0.31 |
0.06 | 0.18 |
0.03 | 0.09 |
0.03 | 0.09 |
1/2 |
0.10 | 0.25 | 0.45 |
0.12 | 0.19 | 0.28 |
0.16 | 0.26 | 0.39 |
0.21 | 0.33 | 0.49 |
0.14 | 0.32 |
0.07 | 0.16 |
0.07 | 0.16 |
3/4 |
0.17 | 0.40 | 0.74 |
0.19 | 0.30 | 0.45 |
0.26 | 0.42 | 0.63 |
0.33 | 0.52 | 0.79 |
0.21 | 0.45 |
0.10 | 0.22 |
0.10 | 0.22 |
1 |
0.27 | 0.64 | 1.26 |
0.31 | 0.48 | 0.72 |
0.43 | 0.67 | 1.00 |
0.54 | 0.84 | 1.26 |
0.41 | 0.90 |
0.21 | 0.44 |
0.21 | 0.44 |
1 1/4 |
0.45 | 1.02 | 1.53 |
0.50 | 0.76 | 1.14 |
0.70 | 1.06 | 1.59 |
0.88 | 1.33 | 2.00 |
0.72 | 1.10 |
0.36 | 0.52 |
0.36 | 0.52 |
1 1/2 |
0.71 | 1.62 | 2.55 |
0.79 | 1.21 | 1.81 |
1.10 | 1.69 | 2.53 |
1.39 | 2.12 | 3.18 |
1.06 | 1.85 |
0.52 | 0.95 |
0.52 | 0.95 |
2 |
1.14 | 2.60 | 3.84 |
1.27 | 1.93 | 2.89 |
1.77 | 2.70 | 4.04 |
2.23 | 3.39 | 5.08 |
1.40 | 2.80 |
0.69 | 1.40 |
0.69 | 1.40 |
2 1/2 |
1.82 | 4.15 | 10.50 |
2.03 | 3.08 | 4.62 |
2.84 | 4.31 | 6.46 |
3.57 | 5.42 | 8.13 |
2.50 | 4.10 |
1.15 | 2.00 |
1.15 | 2.00 |
3 |
2.91 | 6.64 | 9.00 |
3.24 | 4.92 | 7.38 |
4.53 | 6.88 | 10.33 |
5.70 | 8.65 | 12.98 |
3.70 | 6.40 |
1.60 | 3.00 |
1.60 | 3.00 |
4 |
4.67 | 10.62 | 16.95 |
5.19 | 7.87 | 11.80 |
7.26 | 11.01 | 16.52 |
9.13 | 13.85 | 20.76 |
6.50 | 10.70 |
3.20 | 5.20 |
3.20 | 5.20 |
Specification of ANSI B16.11 Forged Fittings
Specification |
Details |
Primary Standard |
ANSI/ASME B16.11 — Forged Fittings, Socket-Welding and Threaded |
Related Standards |
BS 3799 | MSS SP-79 | MSS SP-83 | MSS SP-95 | ASME B1.20.1 |
Forging Specification |
ASTM A105 | A182 | A350 | B462 | B564 |
Fitting Specification |
ASTM A234 | A403 | A420 | A815 | B366 |
Size Range |
NPS ⅛" to 4" (SW); NPS ⅛" to 4" standard, up to 6" (Threaded) |
Pressure Classes |
Threaded: Class 2000, 3000, 6000 | Socket Weld: Class 3000, 6000, 9000 |
End Connections |
Socket Weld (SW) | Threaded (NPT/BSP/BSPT) | Combination SW + Threaded |
Thread Standard |
ASME B1.20.1 (NPT) | BS 21 (BSPT/BSPP) |
Bore Concentricity |
Socket & fitting bores within 0.8 mm; opposite sockets within 1.5 mm |
Marking |
Manufacturer name/mark | Material grade | Class designation | Heat/lot number |
Test / Inspection |
EN 10204 3.1 MTC | Hydro test (H₂O < 30 ppm Cl⁻ for SS) | 100% Radiography | Visual + Dimensional |
Certifications |
ISO 9001 | PED | KOC | TUV / BV / SGS third-party inspection |
ANSI B16.11 Forged Fittings — Types & Forms
Fitting Type |
Socket Weld |
Threaded |
90° Elbow |
✔ | ✔ |
45° Elbow |
✔ | ✔ |
Equal Tee |
✔ | ✔ |
Reducing Tee |
✔ | ✔ |
Cross |
✔ | ✔ |
Full Coupling |
✔ | ✔ |
Half Coupling |
✔ | ✔ |
Cap |
✔ | ✔ |
Union |
✔ | ✔ |
Boss |
✔ | ✔ |
Bushing |
— | ✔ |
Plug(Hex/Square/Round) |
— | ✔ |
Street Elbow |
— | ✔ |
Swage Nipple |
— | ✔ |
Couplet |
✔ | ✔ |
Pressure Rating of ANSI B16.11 Forged Fittings
Fitting Class |
End Type |
Compatible Pipe Schedule |
Max PSI (CS @ RT) |
Max PSI (SS @ RT) |
Class 2000 |
Threaded |
Sch 80 / XS |
2000 PSI |
2000 PSI |
Class 3000 |
Threaded / SW |
Sch 160 |
3000 PSI |
3000 PSI |
Class 6000 |
Threaded / SW |
XXS |
6000 PSI |
6000 PSI |
Class 9000 |
Socket Weld |
XXS+ |
9000 PSI |
9000 PSI |
ANSI B16.11 Socket Weld 90° Elbow Dimensions Chart (Class 3000 / 6000)
NPS (in) |
OD (mm) |
Centre-to-End A (mm) |
Socket Bore C (mm) |
Socket Depth E (mm) |
Wall Thk T (mm) |
1/2" |
21.3 | 25 | 15.8 | 13 | 3.73 |
3/4" |
26.7 | 29 | 20.9 | 14 | 3.91 |
1" |
33.4 | 38 | 26.6 | 16 | 4.55 |
1-1/4" |
42.2 | 48 | 35.1 | 17 | 4.85 |
1-1/2" |
48.3 | 57 | 40.9 | 19 | 5.08 |
2" |
60.3 | 64 | 52.5 | 22 | 5.54 |
2-1/2" |
73.0 | 76 | 62.7 | 25 | 7.01 |
3" |
88.9 | 86 | 77.9 | 28 | 7.62 |
4" |
114.3 | 106 | 102.3 | 33 | 8.56 |
Different Material Grades of ANSI B16.11 Forged Fittings
Material Family |
Grade / UNS |
ASTM Spec |
Carbon Steel |
A105 / A105N |
ASTM A105 | ASME SA-105 |
Low Temp Carbon Steel |
A350 LF2 / LF3 |
ASTM A350 |
Alloy Steel |
A182 F11 / F22 / F91 |
ASTM A182 |
Stainless Steel 304/L |
A182 F304 / F304L |
ASTM A182 |
Stainless Steel 316/L |
A182 F316 / F316L |
ASTM A182 |
Duplex Stainless |
A182 F51 / UNS S31803 |
ASTM A182 |
Super Duplex |
A182 F53 / F55 / UNS S32750 |
ASTM A182 |
Inconel 625 |
UNS N06625 |
ASTM B564 |
Incoloy 825 |
UNS N08825 |
ASTM B564 |
Hastelloy C276 |
UNS N10276 |
ASTM B462 / B564 |
Monel 400 |
UNS N04400 |
ASTM B564 |
Titanium Gr. 2 |
UNS R50400 |
ASTM B381 |
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Contact UsFrequently Asked Questions - ANSI B16.11 Forged Fittings
What is ANSI B16.11?
ANSI B16.11 is the American National Standard covering ratings, dimensions, tolerances, marking, and material requirements for forged fittings in socket weld and threaded end connections, published by ASME.
What is the difference between ANSI B16.11 and ASME B16.11?
They refer to the same standard. ASME B16.11 is the current designation; ANSI B16.11 is the earlier name used before ASME assumed full administration. Both terms are used interchangeably in industry.
What pressure classes are available in B16.11 fittings?
Threaded fittings: Class 2000, 3000, and 6000. Socket weld fittings: Class 3000, 6000, and 9000. Class correlates to pipe schedule, like class 3000 matches Sch 80/XS; Class 6000 matches Sch 160; Class 9000 matches XXS.
What materials are ANSI B16.11 forged fittings available in?
Carbon steel (A105), stainless steel (304/L, 316/L), alloy steel (F11, F22, F91), duplex, super duplex, Inconel, Incoloy, Hastelloy, Monel, and titanium grades.
What is the size range of ANSI B16.11 forged fittings?
Standard sizes range from NPS ⅛" to NPS 4" for both socket weld and threaded types. Threaded fittings can be produced up to NPS 6" on request.
What is the difference between socket weld and threaded B16.11 fittings?
Socket weld fittings are joined by inserting pipe into a recessed bore and applying a fillet weld best for permanent, high-pressure connections. Threaded fittings screw onto pipe — best for accessible, lower-pressure or maintenance-heavy lines.
Are B16.11 fittings available with third-party inspection?
Yes. Jade Alloys provides third-party inspection by TUV, BV, SGS, or DNV on request, along with EN 10204 3.1 Mill Test Certificates as standard.
What thread standard is used for ANSI B16.11 threaded fittings?
Threads conform to ASME B1.20.1 for NPT (National Pipe Taper) threads. BSP and BSPT threads per BS 21 are also available on request.
