Stainless steel threaded fittings are components used in piping systems where threaded connections are employed. These fittings have threaded ends, allowing them to be easily connected to other threaded components, such as pipes, valves, or other fittings. Threaded fittings are commonly used in smaller diameter piping systems and are popular for their ease of installation and versatility. Stainless steel threaded fittings are particularly favored for their corrosion resistance, durability, and suitability for a wide range of applications.
Elbow: Threaded elbows are fittings that allow a change in the direction of the pipe. They come in various angles, such as 90 degrees and 45 degrees.
Tee: Threaded tees have three openings and are used for branching in piping systems.
Coupling: Couplings are used to connect two pipes or fittings with the same diameter. They can be either full couplings or half couplings, depending on whether they cover the entire pipe length or just a portion.
Union: Threaded unions provide a detachable joint in the piping system, allowing for easy disassembly and reassembly.
Hex Plug:These plugs have a hexagonal head and are used to close or seal the end of a threaded pipe or fitting.
Bushing: Threaded bushings are used to reduce the size of a threaded opening. They have male threads on one end and female threads on the other.
Nipple: Threaded nipples are short sections of pipe with male threads on both ends. They are used to connect two female-threaded components.
Stainless steel threaded fittings are widely used in industries such as petrochemical, chemical, food processing, and water treatment due to their corrosion resistance, strength, and hygienic properties. The specific type of stainless steel used, such as SS 304 or SS 316, will depend on the application and environmental conditions. Additionally, the fittings may conform to standards like ASTM A182 for forged fittings or ASTM A351 for cast fittings.It's important to note that when working with threaded fittings, proper sealing methods like thread seal tape or thread sealant are often used to ensure a leak-free connection.
| Size Range : | 1/2"-8" |
| Grade : | F304 & F304L F316 & F316L |
| End Connection : | Threaded |
| Pressure : | 3,000LB 6,000LB 9,000LB |
| Thread Types: | NPT/ BSPP/ BSPT |
| Use : | Fire protection Water distribution Cooling systems |
| Advantages : | Simple usage Suitable for low-pressure Leakage integrity is good Parts can be detached Less force is required for joining Easy installation |
| Specification Chart: | Stainless Steel Threaded Fittings |
| Grade : | Stainless Steel 304 Forged Fittings Stainless Steel 316 Forged Fittings Stainless Steel 316L Forged Fittings |
| Finishing : | Stainless Steel: Pickled |
| Threaded standard | BSPT, NPT, BSP, DIN etc |
| Manufacturer Size | SW Fitting = ½” Inch To 8” Inch Threaded (NPT) Fitting = ½” Inch To 8” Inch |
| Pressure Class | NPT Fitting = Class 2000/ Class 3000/ Class 6000 |
| Production Technique | Forged/ Heat treated and machined |
| Manufacturer Types | Elbow (45 Deg/ 90 Deg) Coupling (Full/ Half) Cross (Equal/ Reducing) Union (Male/Female), Outlet (Lateral/Branch) Tee (Equal/ Reducing) Threaded Pipe Cap Plug (Hex Head/ Square Head/ Round Head/ Bull) |
For testing the quality of stainless steel threaded pipe fittings, different tests can be performed on it. This includes the material test, visual inspections, dimensional tests, NDT and other tests specific to the application requirements. When a stainless threaded fitting is certified, clients can be rest assured about its quality.
Six Most Common Types of Threads
| Standard | System Name |
|---|---|
|
British Standard Pipe
|
(BSP)
|
|
British Standard Pipe Parallel Thread
|
(BSPP)
|
|
British Standard Pipe Taper Thread
|
(BSPT)
|
|
National Pipe Thread
|
(NPT)
|
|
National Pipe Thread Fuel
|
(NPTF)
|
| (DN And NPT) | Diameter In Millimeter |
Tapping Drill Size In Millimeter |
TPI | Pitch In Millimeter |
| 1/16" | 7.895 | 6.00 | 27 | 0.941 |
| 1/8" | 10.242 | 8.25 | 27 | 0.941 |
| 1/4" | 13.616 | 10.70 | 18 | 1.411 |
| 3/8" | 17.055 | 14.10 | 18 | 1.411 |
| 1/2" | 21.223 | 17.40 | 14 | 1.814 |
| 3/4" | 26.568 | 22.60 | 14 | 1.814 |
| 1" | 33.228 | 28.50 | 11.5 | 2.209 |
| 1.1/4" | 41.985 | 37.00 | 11.5 | 2.209 |
| 1.1/2" | 48.054 | 43.50 | 11.5 | 2.209 |
| 2" | 60.092 | 55.00 | 11.5 | 2.209 |
| 2.1/2" | 72.699 | 65.50 | 8 | 3.175 |
| 3" | 88.608 | 81.50 | 8 | 3.175 |
| 3.1/2" | 101.316 | 94.30 | 8 | 3.175 |
| 4" | 113.973 | 107.00 | 8 | 3.175 |
| 5" | 141.300 | 134.384 | 8 | 3.175 |
| 6" | 168.275 | 161.191 | 8 | 3.175 |
| 8" | 219.075 | 211.673 | 8 | 3.175 |
| 10" | 273.050 | 265.311 | 8 | 3.175 |
| 12" | 323.850 | 315.793 | 8 | 3.175 |
| Description | Class Designation | ||
| Class 3000 | Class 6000 | Class 9000 | |
| 45 and 90 degree Elbow Tee/ Cross/ Couplings/ Half-Couplings/ End or Pipe Caps |
1/2 - 4 | 1/2 - 2 | 1/2 - 2 |
| 1/2 - 4 | 1/2 - 2 | 1/2 - 2 | |
| 1/2 - 4 | 1/2 - 2 | 1/2 - 2 | |
| Pipe Size by Wall Thickness (WT) |
Schedule 80 / XS | Schedule 160 | XXS |
| Product Description | Pressure Class (#) | ||
| Class 2000 Fitting | Class 3000 Fitting | Class 6000 Fitting | |
| ASME B16.11 Elbow ASME B16.11 Tee/ ASME B16.11 Cross/ ASME B16.11 Coupling ASME B16.11 Bushing/ End Cap |
1/2 - 4" | 1/2 - 2" | 1/2 - 2" |
| 1/2 - 4" | 1/2 - 2" | 1/2 - 2" | |
| 1/2 - 4" | 1/2 - 2" | 1/2 - 2" | |
| Wall Thickness Of Steel Pipe | 80 Sch | 160 Sch | XXS |
| Size Of Pipes In Inch | Dia Of (A) |
Dia. Of (B) |
ASME B16.11 Weight in Pounds |
|---|---|---|---|
| 1/8 | 0.69 | 0.66 | 0.06 |
| 1/4 | 0.80 | 0.80 | 0.10 |
| 3/8 | 0.94 | 0.97 | 0.15 |
| 1/2 | 1.11 | 1.17 | 0.22 |
| 3/4 | 1.24 | 1.38 | 0.32 |
| 1 | 1.43 | 1.74 | 0.52 |
| 1-1/4 | 1.72 | 2.07 | 0.76 |
| 1-1/2 | 1.87 | 2.36 | 0.99 |
| 2 | 2.25 | 2.86 | 1.49 |
| 2-1/2 | 2.68 | 3.57 | 2.78 |
| 3 | 3.05 | 4.23 | 4.41 |
| 4 | 3.72 | 5.24 | 6.72 |
|
Normal Size Of Pipes In Inch
|
Length Of Thread (Minimum) | Minimum (WT) | Outer Dia. |
Center-End
|
||
|
(J)
|
(B)
|
(G)
|
(D)
|
|||
| (C) | (A) | |||||
|
1/2
|
13.6
|
10.9
|
3.18
|
33
|
22
|
|
|
1/4
|
13.9
|
12.7
|
3.18
|
38
|
25
|
33
|
|
1
|
17.3
|
14.7
|
3.68
|
46
|
28
|
38
|
|
1¼
|
18
|
17
|
3.89
|
56
|
33
|
44
|
|
1½
|
18.4
|
17.8
|
4.01
|
62
|
35
|
51
|
|
2
|
19.2
|
19
|
4.27
|
75
|
43
|
60
|
|
2½
|
28.9
|
23.6
|
5.61
|
92
|
52
|
76
|
|
3
|
30.5
|
25.9
|
5.99
|
109
|
64
|
86
|
|
4
|
33
|
27.7
|
6.55
|
146
|
79
|
106
|
| Service Temperature | 3000lb and | Threaded (NPT) |
| Degree F 100 | Grade F304 | Grade F316 |
| 150 | 2570 | 3000 |
| 200 | 2425 | 2950 |
| 250 | 2280 | 2915 |
| 300 350 | 2170 | 2975 |
| 400 | 2055 | 2845 |
| 450 | 1965 | 2810 |
| 500 | 1870 | 2775 |
| 550 | 1790 | 2715 |
| 600 650 | 1715 | 2605 |
| 700 | 1650 | 2460 |
| 750 | 1590 | 2310 |
| 800 | 1535 | 2150 |
| 850 | 1480 | 2055 |
| 900 950 | 1425 | 1960 |
| 1000 | 1370 | 1865 |
| Service Temperature | 6000lb and | Threaded (NPT) |
| Degree F | A182 Grade F304 | A182 Grade F316 |
| 100 | ||
| 150 | 5145 | 6000 |
| 200 | 4855 | 5915 |
| 250 | 4565 | 5830 |
| 350 | 4340 | 5750 |
| 400 | 4115 | 5690 |
| 450 | 3930 | 5625 |
| 500 | 3745 | 5550 |
| 550 | 3585 | 5430 |
| 650 | 3430 | 5210 |
| 700 | 3305 | 4925 |
| 750 | 3180 | 4620 |
| 800 | 3070 | 4300 |
| 850 | 2960 | 4110 |
| 950 | 2580 | 3920 |
| 1000 | 2745 | 3730 |
| Class Designation | Types Of Fitting | Schedule No. |
| 2000 | Threaded | 80 |
| 3000 | Threaded | 160 |
| 6000 | Threaded |
