Reducing Union Tube Fitting
A reducing union is a fitting component designed to connect two separate pipes effectively. It allows for easy disconnection without causing deformation to the pipes. Reducing Union fitting is ideal for connecting pipes of similar or different diameters, ensuring a secure seal.
Kaizen Steel Industries is a leading supplier of high-quality Reducing Union Tube Fitting, offering them at affordable prices. We provide Reducing Union fittings in various standards, specifications, and custom dimensions to meet different application needs.
Reducing unions are widely used in various industries to connect pipes of different sizes easily. Typically, a reducing union consists of three main parts: a nut, a female end, and a male end. The nut is used to connect the male and female ends, locking the joint in place. A radial screw or nut ensures a tight seal between the pipes through this fitting.
When external forces and stress are applied to a pipe, it can sometimes cause the reducing union parts to break, typically due to a failure of the screw or nut. However, our pipe unions are made from high-quality materials, which reduces the likelihood of such breakage.
We perform various quality tests on our products to ensure their reliability. These tests include mechanical tests, PMI tests, chemical tests, tensile tests, intergranular corrosion tests, destructive and nondestructive tests, and hydrostatic tests.
We manufacture reducing unions in various grades, diameters, and thicknesses according to customer drawings and specifications.
Reducing Union Specification
| Pressure Ratings | Up to 11 000 psig (760 bar), |
| Medium-Pressure | Up to 20 000 psig (1378 bar) |
| High-Pressure | Up to 60 000 psig (4134 bar) |
| Types | NPT, ISO/BP, SAE/MS, AN, weld ends |
| Sizes | 1/16 to 2 in.; 2 to 50 mm, |
| Medium-Pressure | 1/4, 3/8, 1/2, 9/16, 3/4, 1 in.; 6, 10, 12 mm |
| High-Pressure | 1/8 to 9/16 in. |
| Temperature Ratings | Up to 1000°F (537°C) |
Reducing Union Material of Construction
| Monel | Monel 400, Monel K500, Monel R-405 |
| Nickel | Nickel 200, Nickel 201 |
| Inconel | Inconel 600, Inconel 601, Inconel 625, Inconel 718 |
| Incoloy | Incoloy 800, Inconel 800H, 800HT |
| Hastalloy | Hastalloy B2, Hastalloy B3, Hastalloy C22, Hastalloy C276, Hastalloy X |
| Titanium | Gr1, Gr2, Gr3, Gr5, Gr7, Gr11 |
| Stainless Steel | ASME / ASTM SA / A403 SA / A 774 WP-S, WP-W, WP-WX, 304, 304L, 316, 316L, 304/304L, 304H, 316H, 316/316L, 321, 330, 347, 309/S, 310/S, 317/L, 333, 410/S, DIN 1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404 |
| Carbon Steel | ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70 |
| Duplex Steel | ASTM / ASME A/SA 182 UNS F44, F45, F51, F53, F55, F60, F61 |
| Alloy Steel | ASTM SA 182 – E25, E26, E27, E28, E29B, E30B, E39B, E40B, E36B, E36C, E41B, AISI4130, AISI4140, AISI4340, 42CRMO4, 16MNCR5, 20MNCR5, 21CrMoV57, EN353, EN354, F11, F22, F91, F9, P11, P22, P91, P9, P5, P92, EN42J, EN8, EN19 |
Reducing Union Technical Specification
| Part no. | Equivalent Part no. Type 1 | Equivalent part no Type 2 | ODT-ØT (INCHES) | D1 | Ø E | ODT-ØT1 (INCHES) | C | BODY HEX F | NUT HEX W | D | L | L1 | NUT HEX W1 | C1 |
| 2-RUD-1 | -200-6-1 | 2RU1 | 1/8 | 0.34 | 0.05 | 1/16 | 0.60 | 1.22 | 7/16 | 0.50 | 0.81 | 5/16 | 7/16 | 0.43 |
| 3-RUD-1 | -300-6-1 | 3RU1 | 3/16 | 0.34 | 0.05 | 1/16 | 0.63 | 1.27 | 7/16 | 0.54 | 0.86 | 5/16 | 7/16 | 0.43 |
| 3-RUD-2 | -300-6-2 | 3RU2 | 3/16 | 0.50 | 0.09 | 1/8 | 0.63 | 1.44 | 7/16 | 0.54 | 0.92 | 7/16 | 7/16 | 0.6 |
| 4-RUD-1 | -400-6-1 | 4RU1 | 1/4 | 0.34 | 0.05 | 1/16 | 0.70 | 1.35 | 7/16 | 0.60 | 0.91 | 5/16 | 9/16 | 0.43 |
| 4-RUD-2 | -400-6-2 | 4RU2 | 1/4 | 0.50 | 0.09 | 1/8 | 0.70 | 1.52 | 7/16 | 0.60 | 0.97 | 7/16 | 9/16 | 0.6 |
| 4-RUD-3 | -400-6-3 | 4RU3 | 1/4 | 0.54 | 0.12 | 3/16 | 0.70 | 1.55 | 7/16 | 0.60 | 1 | 1/2 | 9/16 | 0.63 |
| 5-RUD-2 | -500-6-2 | 5RU2 | 5/16 | 0.50 | 0.09 | 1/8 | 0.73 | 1.56 | 9/16 | 0.64 | 1.01 | 7/16 | 5/8 | 0.6 |
| 5-RUD-4 | -500-6-4 | 5RU4 | 5/16 | 0.60 | 0.19 | 1/4 | 0.73 | 1.66 | 9/16 | 0.64 | 1.08 | 9/16 | 5/8 | 0.7 |
| 6-RUD-1 | -600-6-1 | 6RU1 | 3/8 | 0.34 | 0.05 | 1/16 | 0.76 | 1.44 | 5/8 | 0.66 | 1 | 5/16 | 11/16 | 0.43 |
| 6-RUD-2 | -600-6-2 | 6RU2 | 3/8 | 0.50 | 0.09 | 1/8 | 0.76 | 1.61 | 5/8 | 0.66 | 1.06 | 7/16 | 11/16 | 0.6 |
| 6-RUD-4 | -600-6-4 | 6RU4 | 3/8 | 0.60 | 0.19 | 1/4 | 0.76 | 1.70 | 5/8 | 0.66 | 1.12 | 9/16 | 11/16 | 0.7 |
| 6-RUD-5 | -600-6-5 | 6RU5 | 3/8 | 0.64 | 0.25 | 5/16 | 0.76 | 1.74 | 5/8 | 0.66 | 1.16 | 5/8 | 11/16 | 0.73 |
| 8-RUD-2 | -810-6-2 | 8RU2 | 1/2 | 0.50 | 0.09 | 1/8 | 0.86 | 1.78 | 7/8 | 0.90 | 1.12 | 7/16 | 7/8 | 0.6 |
| 8-RUD-4 | -810-6-4 | 8RU4 | 1/2 | 0.60 | 0.19 | 1/4 | 0.86 | 1.85 | 7/8 | 0.90 | 1.16 | 9/16 | 718 | 0.7 |
| 8-RUD-6 | -810-6-6 | 8RU6 | 1/2 | 0.66 | 0.28 | 3/8 | 0.86 | 1.91 | 7/8 | 0.90 | 1.22 | 11/16 | 7/8 | 0.76 |
| 10-RUD-6 | -1010-6-6 | 10RU6 | 5/8 | 0.66 | 0.28 | 3/8 | 0.86 | 1.94 | 1 | 0.96 | 1.25 | 11/16 | 1 | 0.76 |
| 10-RUD-8 | -1010-6-8 | 10RU8 | 5/8 | 0.90 | 0.41 | 1/2 | 0.86 | 2.05 | 1 | 0.96 | 1.25 | 7/8 | 1 | 0.86 |
| 12-RUD-4 | -1210-6-4 | 12RU4 | 3/4 | 0.60 | 0.19 | 1/4 | 0.86 | 1.94 | 1-1/8 | 0.96 | 1.25 | 9/16 | 1-1/8 | 0.7 |
| 12-RUD-6 | -1210-6-6 | 12RU6 | 3/4 | 0.66 | 0.28 | 3/8 | 0.86 | 2.00 | 1-1/8 | 0.96 | 1.31 | 11/16 | 1-1/8 | 0.76 |
| 12-RUD-8 | -1210-6-8 | 12RU8 | 3/4 | 0.90 | 0.41 | 1/2 | 0.86 | 2.11 | 1-1/8 | 0.96 | 1.31 | 7/8 | 1-1/8 | 0.86 |
| 12-RUD-10 | -1210-6-10 | 12RU10 | 3/4 | 0.96 | 0.50 | 5/8 | 0.86 | 2.11 | 1-1/8 | 0.96 | 1.31 | 1 | 1-1/8 | 0.86 |
| 16-RUD-8 | -1610-6-8 | 16RU8 | 1 | 0.90 | 0.41 | 1/2 | 1.04 | 2.38 | 1-1/2 | 1.23 | 1.5 | 7/8 | 1-1/2 | 0.86 |
| 16-RUD-12 | -1610-6-12 | 16RU12 | 1 | 0.96 | 0.62 | 3/4 | 1.04 | 2.38 | 1-1/2 | 1.23 | 1.5 | 1-1/8 | 1-1/2 | 0.86 |
Reducing Union Imperial Tubing
| Imperial Tubing | ||||||||||||
| Tube O.D | A | C1 | C2 | D | W inch | Min bore | ||||||
| 1 inch | 2 inch | mm | inch | mm | inch | mm | inch | mm | inch | mm | ||
| 1/8 | 1/16 | 1.20 | 30.5 | 0.60 | 15.2 | 0.43 | 10.9 | 0.81 | 20.6 | 7/16 | 0.05 | 1.3 |
| 3/16 | 1/16 | 1.25 | 31.8 | 0.63 | 16.0 | 0.43 | 10.9 | 0.86 | 21.8 | 7/16 | 0.05 | 1.3 |
| 3/16 | 1/8 | 1.42 | 36.1 | 0.63 | 16.0 | 0.60 | 15.2 | 0.92 | 23.4 | 7/16 | 0.09 | 2.3 |
| 1/4 | 1/16 | 1.35 | 34.3 | 0.70 | 17.8 | 0.43 | 10.9 | 0.91 | 23.1 | 1/2 | 0.05 | 1.3 |
| 1/4 | 1/8 | 1.52 | 38.6 | 0.70 | 17.8 | 0.60 | 15.2 | 0.97 | 24.6 | 1/2 | 0.09 | 2.3 |
| 1/4 | 3/16 | 1.54 | 39.1 | 0.70 | 17.8 | 0.63 | 16.0 | 1.00 | 25.4 | 1/2 | 0.13 | 3.3 |
| 5/16 | 1/4 | 1.67 | 42.4 | 0.73 | 18.6 | 0.70 | 17.8 | 1.08 | 27.4 | 9/16 | 0.19 | 4.8 |
| 3/8 | 1/16 | 1.44 | 36.6 | 0.76 | 19.3 | 0.43 | 10.9 | 1.00 | 25.4 | 5/8 | 0.05 | 1.3 |
| 3/8 | 1/8 | 1.60 | 40.6 | 0.76 | 19.3 | 0.60 | 15.2 | 1.06 | 26.9 | 5/8 | 0.09 | 2.3 |
| 3/8 | 1/4 | 1.72 | 43.7 | 0.76 | 19.3 | 0.70 | 17.8 | 1.13 | 28.7 | 5/8 | 0.19 | 4.8 |
| 3/8 | 5/16 | 1.75 | 44.5 | 0.76 | 19.3 | 0.73 | 18.6 | 1.16 | 29.5 | 5/8 | 0.25 | 6.4 |
| 1/2 | 1/8 | 1.72 | 43.7 | 0.86 | 21.8 | 0.60 | 15.2 | 1.09 | 27.7 | 13/16 | 0.09 | 2.3 |
| 12/ | 1/4 | 1.84 | 46.7 | 0.86 | 21.8 | 0.70 | 17.8 | 1.16 | 29.5 | 13/16 | 0.19 | 4.8 |
| 1/2 | 3/8 | 1.90 | 48.3 | 0.86 | 21.8 | 0.76 | 19.3 | 1.22 | 31.0 | 13/16 | 0.28 | 7.1 |
| 5/8 | 3/8 | 1.93 | 49.0 | 0.86 | 21.8 | 0.76 | 19.3 | 1.25 | 31.8 | 15/16 | 0.28 | 7.1 |
| 5/8 | 1/2 | 2.02 | 51.3 | 0.86 | 21.8 | 0.86 | 21.8 | 1.25 | 31.8 | 15/16 | 0.41 | 10.4 |
| 3/4 | 1/2 | 2.08 | 52.8 | 0.86 | 21.8 | 0.86 | 21.8 | 1.31 | 33.3 | 1.1/16 | 0.41 | 10.4 |
| 3/4 | 5/8 | 2.08 | 52.8 | 0.86 | 21.8 | 0.86 | 21.8 | 1.31 | 33.3 | 1.1/16 | 0.50 | 12.7 |
| 1 | 3/4 | 2.35 | 59.7 | 1.04 | 26.4 | 0.86 | 21.8 | 1.50 | 38.1 | 1.3/8 | 0.63 | 16.0 |
Reducing Union Metric Tubing
|
Metric tubing |
||||||||||||
| Tube O.D 1 mm 2 mm |
A mm |
C1
mm |
D mm |
W mm |
Min bore mm |
|||||||
| 6 | 3 | 38.7 | 17.7 | 15.3 | 1/2 | 2.4 | ||||||
| 8 | 6 | 42.4 | 18.6 | 27.4 | 9/16 | 4.8 | ||||||
| 10 | 6 | 44.5 | 19.5 | 29.4 | 11/16 | 4.8 | ||||||
| 10 | 8 | 44.5 | 19.5 | 29.4 | 11/16 | 6.4 | ||||||
| 12 | 6 | 47 | 22 | 29.4 | 13/16 | 4.8 | ||||||
| 12 | 8 | 47.8 | 22 | 30.2 | 13/16 | 6.4 | ||||||
| 12 | 10 | 48.7 | 22 | 31 | 13/16 | 7.9 | ||||||
| 16 | 12 | 52 | 22 | 31.8 | 15/16 | 9.5 | ||||||
| 25 | 18 | 60.5 | 26.5 | 38.1 | 1.3/8 | 15.1 | ||||||
| 25 | 20 | 62.3 | 26.5 | 39.9 | 1.3/8 | 15.9 | ||||||
Reducing Pipe Union Applications
Our reducing unions are utilized in a wide range of industries and applications. Some of the key sectors include:
- Oil & Gas Industry
- Gas Processing Industry
- Food Processing Industry
- Petrochemical Industry
- Chemical Industry
- Power Generation Industry
- Sugar Industry
- Fertilizer Industry
Kaizen Steel Industries Export to
Burundi, Comoros, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Malawi, Mauritius, Mayotte, Mozambique, Reunion, Rwanda, Seychelles, Somalia, Tanzania, United Republic of Uganda, Zambia, Zimbabwe, Angola, Cameroon, Central African Republic, Chad, Congo (Brazzaville), Congo, Democratic Republic of the Equatorial Guinea, Gabon, Sao Tome and Principe, Algeria, Egypt, Libyan Arab Jamahiriya, Morroco, South Sudan, Sudan, Tunisia, Western Sahara, Botswana, Lesotho, Namibia, South Africa, Swaziland, Benin, Burkina Faso, Cape Verde, Cote d\\’Ivoire (Ivory Coast), Gambia, Ghana, Guinea, Guinea-Bissau, Liberia, Mali, Mauritania, Niger, Nigeria, Saint Helena, Senegal, Sierra Leone, Togo
Anguilla, Antigua and Barbuda, Aruba, Bahamas, Barbados, Bonaire, Saint Eustatius and Saba, British Virgin Islands, Cayman Islands, Cuba, Curaçao, Dominica, Dominican Republic, Grenada, Guadeloupe, Haiti, Jamaica, Martinique, Monserrat, Puerto Rico, Saint-Barthélemy, St. Kitts and Nevis, Saint Lucia, Saint Martin, Saint Vincent and the Grenadines, Sint Maarten, Trinidad and Tobago, Turks and Caicos Islands, Virgin Islands (US), Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Falkland Islands (Malvinas), French Guiana, Guyana, Paraguay, Peru, Suriname, Uruguay, Venezuela, Bermuda, Canada, Greenland, Saint Pierre and Miquelon, United States
Afghanistan, Armenia, Azerbaijan, Bangladesh, Bhutan, Brunei Darussalam, Cambodia, China, Georgia, Hong Kong, India, Indonesia, Japan, Kazakhstan, South Korea, Kyrgyzstan, Laos, Macao, Malaysia, Maldives, Mongolia, Myanmar (ex-Burma), Nepal, Phillipines, Singapore, Sri Lanka (ex-Ceilan), Taiwan, Tajikistan, Thailand, Timor Leste (West), Turkmenistan, Uzbekistan, Vietnam
Albania, Andorra, Belarus, Bosnia, Croatia, European Union, Faroe Islands, Gibraltar, Guerney and Alderney, Iceland, Jersey, Kosovo, Liechtenstein, Macedonia, Man, Island of Moldova, Monaco, Montenegro, Norway, Russia, San Marino, Serbia, Svalbard and Jan Mayen Islands, Switzerland, Turkey, Ukraine, Vatican City State (Holy See)
Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, United Kingdom
Bahrain, Iraq, Iran, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, United Arab Emirates, Yemen
