





Stainless steel Unions, also known as a Union coupling or Threaded pipe union. Union male-female in Stainless Steel with female threaded connections on one side and male on the other end with tightening Nut in the middle. It provides an easy way to connect two pipes without having to turn the pipes. These types of unions are used to secure a semi-permanent connection between two pipes.
The stainless steel union is made from three parts, It consists of two pipes connected together via a third piece. It has extra functionality compared to that of a regular couple. Very convenient to install, and disassemble, and with strong versatility, can access your line without unthreading pipe connections.
Made from corrosion-resistant stainless steel, this forged union ensures excellent structural integrity in high-pressure applications and provides reliability and durability. Its rugged construction and compliance with industry standards make it the first choice for applications requiring reliable performance under pressure.
Introduction
|
Item |
Stainless Steel Union |
|
Standard |
ASTM, DIN, JIS, ISO, GB standards |
|
Material |
Stainless steel 304/316L |
|
Surface |
Sand Blasting |
|
Type |
Cast |
|
size |
1/8"-3" |
|
Delivery time |
Within 5-30 days after receiving the prepaid |
|
Packing |
Wooden Case |
|
Application |
water supply, petroleum, environmental protection, chemical industry, food, electricity, construction, sewage, |

|
NPS |
A |
C |
D(max) |
D(min) |
F |
G |
H (Thrds/IN) |
J(min) |
L |
N |
|
1/8" |
14.7 |
2.41 |
8.43 |
6.34 |
3.18 |
3.18 |
16 |
1.24 |
41.4 |
50.8 |
|
1/4" |
19 |
3.02 |
11.13 |
9.45 |
3.18 |
3.18 |
16 |
1.24 |
41.4 |
50.8 |
|
3/8" |
22.9 |
3.2 |
14.27 |
13.51 |
3.43 |
3.43 |
14 |
1.37 |
46 |
55.9 |
|
1/2" |
27.7 |
3.73 |
17.86 |
17.07 |
3.68 |
3.68 |
14 |
1.5 |
49 |
58.4 |
|
3/4" |
33.5 |
3.91 |
23.01 |
21.39 |
4.06 |
4.06 |
11 |
1.68 |
56.9 |
66 |
|
1" |
41.4 |
4.55 |
28.98 |
27.74 |
4.57 |
4.45 |
11 |
1.85 |
62 |
78.7 |
|
1 1/4" |
50.5 |
4.85 |
37.69 |
35.36 |
5.33 |
5.21 |
10 |
2.13 |
71.1 |
94 |
|
1 1/2" |
57.2 |
5.08 |
43.54 |
41.2 |
5.84 |
5.59 |
10 |
2.31 |
76.5 |
111.8 |
|
2" |
70.1 |
5.54 |
55.58 |
52.12 |
6.60 |
6.35 |
10 |
2.69 |
86.1 |
132.1 |
|
2 1/2" |
85.3 |
7.01 |
66.27 |
64.31 |
7.49 |
7.11 |
8 |
3.07 |
102.4 |
149.9 |
|
3" |
102.4 |
7.62 |
88.25 |
77.27 |
8.26 |
8.00 |
8 |
3.53 |
109 |
175.3 |
Xinhang Special Material Co., Ltd. Hangzhou Branch is famous China 150# 304 Stainless Steel Cast Unions 1/8"-3" Threaded Union Pipe Fitting suppliers and OEM/ODM 150# 304 Stainless Steel Cast Unions 1/8"-3" Threaded Union Pipe Fitting 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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