





Stainless Steel Union is a type of transition joint commonly used in pipe conversion, used to connect and disconnect the pipe connections of two pipes or piping systems. Composed of two parts, this loop-type connection method can be quickly and easily disassembled, which is beneficial to pipeline maintenance, repair, and other operations.
Forged unions are constructed of stainless steel to ensure structural integrity in high-pressure applications and provide reliability and durability, it is suitable for various environments and working conditions and suitable for pipe connection needs.
Stainless steel unions are widely used in low-pressure pipeline systems. They are often used in pipeline systems in chemical, petroleum, food processing, pharmaceutical, and other industries. They are also used to connect pipelines, valves, equipment, or other accessories, suitable for high-temperature or special medium transmission.
Introduction
|
Item |
Stainless Steel Union |
|
Standard |
3A, DIN, SMS, IDF, BPE, BS, ISO |
|
Material |
Stainless Steel |
|
Surface |
CNC Machined |
|
Type |
Investment Casting Foundry- Wax Lost Technology |
|
size |
1/8"-3” |
|
Delivery time |
Within 5-30 days after receiving the prepaid |
|
Packing |
Shrink wrapper- carton-plywood case |
|
Application |
Food, beverage, chemical, pharmacy, biotechnology, cosmetic, and other industries in the field of stainless steel piping system |

Dimensions in Millimeters
|
NPS |
Size |
A |
B |
C |
D(max) |
D(min) |
k |
E |
F |
G |
J(min) |
L |
N |
|
1/8" |
6 |
14.7 |
9.88 |
2.41 |
8.43 |
6.34 |
9.5 |
22.4 |
3.18 |
3.18 |
1.24 |
41.4 |
50.8 |
|
1/4" |
8 |
19 |
12.96 |
3.02 |
11.13 |
9.45 |
9.5 |
22.4 |
3.18 |
3.18 |
1.24 |
41.4 |
50.8 |
|
3/8" |
10 |
22.9 |
16.5 |
3.2 |
14.27 |
13.51 |
9.5 |
27 |
3.43 |
3.43 |
1.37 |
46 |
55.9 |
|
1/2" |
15 |
27.7 |
20.24 |
3.73 |
17.86 |
17.07 |
9.5 |
30 |
3.68 |
3.68 |
1.5 |
49 |
58.4 |
|
3/4" |
20 |
33.5 |
25.68 |
3.91 |
23.01 |
21.39 |
12.5 |
31.9 |
4.06 |
4.06 |
1.68 |
56.9 |
66 |
|
1" |
25 |
41.4 |
32.3 |
4.55 |
28.98 |
27.74 |
12.5 |
37 |
4.57 |
4.45 |
1.85 |
62 |
78.7 |
|
1 1/4" |
32 |
50.5 |
40.8 |
4.85 |
37.69 |
35.36 |
12.5 |
46.1 |
5.33 |
5.21 |
2.13 |
71.1 |
94 |
|
1 1/2" |
40 |
57.2 |
47.04 |
5.08 |
43.54 |
41.2 |
12.5 |
51.5 |
5.84 |
5.59 |
2.31 |
76.5 |
111.8 |
|
2" |
50 |
70.1 |
59.02 |
5.54 |
55.58 |
52.12 |
16 |
54.1 |
6.60 |
6.35 |
2.69 |
86.1 |
132.1 |
|
2 1/2" |
65 |
85.3 |
71.28 |
7.01 |
66.27 |
64.31 |
16 |
70.4 |
7.49 |
7.11 |
3.07 |
102.4 |
149.9 |
|
3" |
80 |
102.4 |
887.16 |
7.62 |
88.25 |
77.27 |
16 |
77 |
8.26 |
8.00 |
3.53 |
109 |
175.3 |
Xinhang Special Material Co., Ltd. Hangzhou Branch is famous China Low Pressure Stainless Steel Union With NPT Threaded Pipe Fittings suppliers and OEM/ODM Low Pressure Stainless Steel Union With NPT Threaded Pipe Fittings manufacturers, founded in 2007 and moved to Longyou Economic Development Zone, Zhejiang Province, in 2022. It covers an area of 130,000 square meters, more than 30 production lines, 300 workers, 20 R&D people, 30 inspection people and an annual output of 50,000 tons.
It has passed ISO9001:2008 quality management system, PED 97/23/EC EU Pressure Equipment Directive certification, China Special Equipment Manufacturing License (Pressure Tube) TS certification, ASME certification, provincial enterprise standardization management system, ISO14000:2004 environment management system, cleaner production (green enterprise), and a series of certifications, as well as China Classification Society (CCS), American Bureau of Shipping (ABS), British Register of Shipping (LR), Deutsche Veritas (GL), Bureau Veritas Society (BV), Det Norske Veritas (DNV), and Korean Register of Shipping (KR) factory certification.
The main products include stainless steel pipes, pipe fittings, flanges, valves, etc., which are widely used in petroleum, chemical industry, nuclear industry, smelting, shipbuilding, pharmaceuticals, food, water conservancy, electric power, new energy, mechanical equipment, and other fields. The company adheres to the corporate tenet of "quality for survival, reputation for development" and wholeheartedly serves every customer to create a win-win situation.




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