Quick Enquiry

Sai Metals Alloy O-Ring Unions are engineered to provide Class 3000 Service and are the most popular union in the industry for general purpose applications. The flat face design provides turbulence-free fit across seats. This design is ideal where piping requirements dictate the necessity of having a flat face seal to make and break the pipe line. All HART Unions are made in the USA!

Sai Metals Alloy is one of the prominent manufacturer, exporter and supplier of forged threaded pipe fittings manufactured in accordance to ASME B16.11. Forged threaded pipe fittings are available ex-stock in all major stainless steel grades (ASTM A182 F316L, F304L) and ASTM A105. We are constantly adding to our diverse product range in order to better serve our valued customers.


Specification :


Type Forged Fittings
Dimensions ASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799
Size 1/2″NB TO 4″NB IN
Pressure Class 150 LBS, 300 LBS
Value Added Services: Hot Dipped Galvanizing, Epoxy & FBE Coating, Electro Polish, Sand Blasting, Threading, Soldering
Production Grades: Stainless Steel, Alloy Steel, Duplex, Nickel Alloys, Low temperature Steel, Carbon Steel, Cupro Nickel
Stainless Steel ASTM A 182 F -.304, 304L, 304Ti, 316, 309, 310, 317L, 321, 347, 904L.
Duplex Steel 2205 (F60), 31803 (F51), 32750, 32760.
Carbon Steel ASTM A-105, A-350 LF2.
Alloy Steel ASTM A 182- F5, F9, F11, F12, F21, F22 & F91.
Nickel Alloy Cupro Nickel, Hastelloy, Nickel, Monel, Inconel, Alloy 20 etc.
Test Certificate MTC, Govt. App. Lab.
Specialize IBR Fitting, Swage Nipple

ASME B16.11 Forged Threaded Union Dimensions


DIMENSIONS OF THREADED UNION (BS3799) (in mm)
Nom. Pipe Size Pipe End Min Socket Bore Dia. Socket Wall Min. Water Way Bore Laying Length Male Flange Min. Nut Min. Threads Per 25.4 Max Bearing Min. Depth of Socket Min. Length Assem. Nominal Clear Assem. Nut
A B C D E F G H J K L N
1/8 21.8 10.92
10.67
3.17 6.83
6.43
22.4
19.0
3.17 3.17 16 1.24 9.6 41.1 49.0
¼ 21.8 14.22
13.97
3.30 9.85
9.45
22.4
19.0
3.17 3.17 19 1.24 9.6 41.4 49.0
3/8 25.9 17.78
17.53
3.48 13.92
13.51
26.9
20.6
3.43 3.43 14 1.37 9.6 46.0 55.0
½ 31.2 21.84
21.59
4.06 17.47
17.07
26.9
20.6
3.68 3.68 14 1.50 9.6 49.0 57.0
¾ 37.1 27.18
26.92
4.27 21.79
21.39
31.8
25.4
4.06 4.06 11 1.68 12.7 56.9 67.0
1 45.5 34.04
33.78
4.95 28.14
27.74
34.3
26.2
4.57 4.44 11 1.85 12.7 62.0 79.0
11/4 54.9 42.67
42.42
5.28 35.76
35.36
40.6
32.5
5.33 5.21 11 2.13 12.7 71.1 94.0
11/2 61.5 48.77
48.51
5.54 41.61
41.20
42.2
34.0
5.84 5.59 10 2.31 12.7 75.5 111.0
2 75.2 61.47
61.21
6.05 52.53
52.12
45.3
37.3
6.60 6.35 10 2.69 15.8 86.1 132.0
21/2 91.7 74.17
73.66
7.65 64.72
64.31
61.7
52.1
7.49 7.11 8 3.07 15.8 102.4 148.0
3 109.2 90.17
89.66
8.31 77.67
77.27
63.8
53.6
8.25 8.00 8 3.53 15.8 109.0 175.0

ASME B16.11 Threaded Pipe Union Weight:


Forged Threaded Union Weight


In Stock ASME B16.11 Threaded Union Types


Forged Steel Unions MS Forged Union
Threaded Union Coupling 3000# Npt Threaded Union
6000# Threaded Union Fitting Suppliers BS 3799 Threaded Union Female Male Manufacturer
Forged Threaded Adapter Union Fitting Stainless Steel Threaded Union
Threaded Copper Union Threaded Pipe Union Fittings
Galvanized Threaded Union Threaded Orifice Union
9000# Threaded Pipe Union Threaded Reducing Union
Male Threaded Socket Union Socket Weld X Threaded Union
Male X Female Threaded Union Screwed Union Pipe Fittings
Carbon Steel Threaded Union High Pressure Threaded Union
ASTM A182 SS Threaded Union Duplex Steel Threaded Union
Super Duplex Steel Threaded Union Copper Nickel Threaded Union
High Nickel Alloy Forged Steel Union Hastelloy Screwed Union Pipe Fittings
Titanium Forged Threaded Unions Inconel Forged Threaded Unions

Types of Threaded Forged Fittings


Buttweld Fittings

Threaded Elbow

Buttweld Fittings

Threaded Tee

Buttweld Fittings

Threaded Cross

Buttweld Fittings

Threaded Plug

Buttweld Fittings

Threaded Coupling

Buttweld Fittings

Threaded Union

Buttweld Fittings

Threaded Cap

Buttweld Fittings

Threaded Nipple

Buttweld Fittings

Threaded Head Bushing

Buttweld Fittings

Threaded Boss

Buttweld Fittings

Threaded Outlet

Buttweld Fittings

Threaded Adapter



Threaded Forged Applications Industries


ASME B16.9 Degree Forged are known to deliver exceptional performance and are generally developed for meeting the demands. We offer a broad range of Buttweld Degree Forged through a worldwide network of stock-keeping branches. Buttweld Forged is use in various industries like :

  • Threaded Forged uses in Paper & Pulp Companies
  • Stainless Steel Threaded Forged uses in Oil and Gas Industry
  • Threaded Forged Pipe Forged uses in Chemical Refinery
  • Alloy Steel Threaded Elbowuses in Pipeline
  • Buttweld Threaded Forged Pipe Forged uses in High Temperature Application
  • Threaded Forged uses in Water Pipe Line
  • ANSI B16.9 Threaded Forged Pipe Forged can be used in Nuclear power plants
  • Threaded Forged usefule for High Pressure Applications
  • Threaded Forged Long Radius Forged uses in Fabrication and welding Job
  • Threaded Forged uses in Food Processing and Dairy Industries
  • Threaded Forged Short Radius Forged uses in boiler & heatexchangers