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This section provides an overview for loose flanges as well as their applications and principles. Also, please take a look at the list of 29 loose flange manufacturers and their company rankings. Here are the top-ranked loose flange companies as of December, 2024: 1.Armaturenwerk Hötensleben GmbH, 2.NIERUF, 3.Nijhuis & Wigger.
Table of Contents
A loose flange, also known as a lapped or lap joint flange, is a flange type utilized in piping systems for creating detachable joints. It is especially useful in applications where direct welding of the flange to the pipe is impractical, facilitating easy assembly and disassembly for inspection or modification.
Loose flanges find application across various industries where fluid dynamics involve low pressure and temperature, and the risk of leakage is minimal. These industries include paper mills, chemical plants, shipbuilding (particularly for LNG and chemical carriers), and building infrastructure (e.g., water supply and fire protection systems).
The distinctive feature of a loose flange is its assembly with a stub end, which is welded to the pipe. This configuration allows for rotational adjustment of the flange, facilitating alignment of bolt holes and easing the installation process. Additionally, in systems conveying corrosive fluids, the non-contact nature of the loose flange with the fluid allows for the use of less expensive materials for the flange while maintaining system integrity.
Selection criteria for loose flanges include nominal diameter, nominal pressure, and material composition, all of which depend on the specific requirements of the piping system. Common materials for loose flanges include carbon steel among others, selected based on factors like fluid compatibility, environmental conditions, and cost.
Loose flanges are manufactured and used per various standards, including JIS B2220 and ASME/ANSI B16.5. Assembly involves inserting the loose flange onto the pipe before welding the stub end, ensuring a secure joint. Proper assembly and tightening practices, including diagonal tightening of bolts, are crucial for leak-free performance.
*Including some distributors, etc.
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Kamlesh Metal (India) is an ISO certified manufacturer and supplier of pipe fittings based in Kumbharwada, Mumbai, and was founded in 2000. Products the company specializes in include flanges, fasteners, buttweld fittings, socket weld fittings, and other piping connections produced from stainless steel, carbon steel, titanium, and various alloys. It additionally manufactures metallic sheets, plates, tubes, round bars, and wires. The company exports its products internationally and has stockyards worldwide, including Saudi Arabia, Indonesia, Australia, the United States, and the United Kingdom.
Red Earth Steels Pvt. Ltd. is a manufacturer of pipe fittings and fasteners for the industrial sector established in 1990 and based in Mumbai, Maharashtra, India. The company offers socket weld and threaded flanges, and pipe fittings including tees, reducers, and elbows. It also offers a range of bolt type fasteners, such as square head bolts, timber spike bolts, and closed eye bolts. The company is WRAS and ISO 14001:2015-certified, and mainly serves clients in the industrial manufacturing and energy sectors.
Armaturenwerk Hötensleben GmbH, established in 1992 and based in Völpke, Germany, is a manufacturer of stainless-steel components. The company produces products such as fittings, strainers, sight glasses, pipes &assembly accessories, and tank equipment and supplies to food, cosmetics, chemical, and pharmaceutical industries. The products of this company are manufactured using manufacturing technologies in the area of cleaning technology, valve technology, and pigging technology and abides by ISO 9001:2015 standards. The company has offices in the USA, Netherlands and Belgium.
Fr. Jacob Söhne GmbH & Co. KG, founded in 1924 and based in Porta Westfalica, Germany, is a manufacturer of modular pipework systems. The company produces products such as pipe bends, transition pieces and adapters, control valves, and inspection pipe components for dust extraction and ventilation systems. With the production facilities, the company manufactures customer-specific products and owns subsidiaries in different countries such as France, Italy, Great Britain, the Czech Republic, and Germany. It also manufactures sheet metal pipes to modular pipework systems.
Hebei Haihao High-Pressure Flange Pipe Fitting Group Co., Ltd., established in 1982 and headquartered in Mengcun County, is a manufacturer specializing in pipe fittings, flanges, and steel pipes. The company offers an extensive and diversified product portfolio that includes butt weld pipe fittings, forged flanges, steel pipes, and customized non-standard products, utilizing carbon steel, alloy steel, and stainless steel materials. These products find applications across various industries, including construction, telecommunications, petroleum transportation, and water and sewage treatment. The manufacturing processes typically involve forging, cold pressing, cold forming, hot extrusion, and chrome finishing to ensure durability.
Osaka Sanitary Co., Ltd. established in 1969, is a manufacturer and distributor of equipment for food processing, beverage, and pharmaceutical manufacturing. The company's product range includes Valves, Pumps, Fittings, Accessories, and Seal-less Mixers. These products are essential in ensuring hygienic and efficient operations. They predominantly serve the food processing, beverage, and pharmaceutical sectors. In addition to its product offerings, the company specializes in plant design and construction, development of CIP units, provision of sterilization units, and supply of sanitary pipes and joints.
The Metals Factory, founded in India is a manufacturer of steel pipes, pipe fitting, and pipes. The company product portfolio consists of a wide range of steel pipes, including seamless, and welded that are available in various sizes, grades, and specifications to meet diverse industry needs and a range of pipe fittings, including elbows, tees, reducers, and flanges. The company exports its products to countries in Africa, America, Europe, Middle East and Australia.
Guru Gautam Steels, established in 1984, is headquartered in Maharashtra, India, and operates as a supplier of various industrial materials, including steel pipes, round bars, sheets and plates, fittings, flanges, and other products. The company specializes in providing a wide range of seamless and ERW pipes, encompassing different grades, forms, and sizes, which adhere to universally recognized standards at the national and international levels. The corporation ensures the preservation of mutual commercial interests among its stakeholders, thereby facilitating the production or sourcing of the appropriate product and its timely delivery at competitive prices.
NieRuf is a supplier of industrial valves and measurement equipment, established in 1970, and headquartered in the Swabian town of Besigheim near Stuttgart in the heart of Europe. The company provides an extensive and diversified product portfolio, including pressure-reducing valves, manometer gauge valves, electromagnetic flow sensors, variable area flow meters, and pipe fittings, among others. These products serve various industries, including construction, household plumbing, petroleum transportation, and water and sewage treatment plants.
MyTech Ltd., established in 2010, based in Verna, Bulgaria, is a supplier to the pipeline, chemical, refining, food, power generation, and industrial markets. The company’s product components includes pipes, valves, fittings, insulations, engineering plastics and rubber and commercial industrial maintenance. Additionally, it serves industries in engineering plastics, measurement and automation equipment, metal gaskets, and static seals and mechanical seals, among others. The company is represented in other international markets, including Eastern Europe, Western Europe, United States, Canada and Middle East.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Armaturenwerk Hötensleben GmbH |
17.1%
|
| 2 | NIERUF |
11.4%
|
| 3 | Nijhuis & Wigger |
11.4%
|
| 4 | Haihao |
8.6%
|
| 5 | heco GmbH |
5.7%
|
| 6 | STAR Piping Systems GmbH |
5.7%
|
| 7 | Reinert-Ritz GmbH |
5.7%
|
| 8 | Hauff-Technik GmbH & Co. KG |
5.7%
|
| 9 | Fr. Jacob Söhne GmbH & Co. KG |
5.7%
|
| 10 | INDURA |
5.7%
|
Derivation Method
The ranking is calculated based on the click share within the loose flange page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
China
|
8 | 38.1% |
|
Germany
|
6 | 28.6% |
|
India
|
5 | 23.8% |
Denmark
|
1 | 4.8% |
Netherlands
|
1 | 4.8% |
45 products found
45 products
SHIMADEN
30+ people viewing
Last viewed: 7 hours ago
A metal fitting for fixing thermocouples and resistance thermometers to equipment. You can select the size that matches the shape of your equipment.
Shoei Sangyo
270+ people viewing
Last viewed: 1 day ago
Very Fast Response
6 models listed
IWC Co., Ltd.
40+ people viewing
Last viewed: 1 hour ago
■Structure Flange is loose type ■Applications Misalignment of piping, etc., ground subsidence, etc. ■Features It is possible to select tubes and ...
IWC Co., Ltd.
50+ people viewing
Last viewed: 1 day ago
■Structure ・Attach the lap joint to the tube ・Flange is loose type ■Applications Misalignment of piping, etc., ground subsidence, etc. ■Feature...
Yoshikawa Seisakusho
1060+ people viewing
Last viewed: 1 day ago
Fast Response
The VG flange has the following model number besides this page. VG100-B, VG100-B, VG125-B, VG125-B, VG150-B, VG150-B, VG200-B, VG200-B, VG250-B, V...
10 models listed
Yoshikawa Seisakusho
750+ people viewing
Last viewed: 2 hours ago
Fast Response
The ICF rotation flange has the following model number besides this page. ICF114-BR, ICF114-H60.5R, ICF114-H63.5R, ICF152-BB, ICF152-HR, ICF203-HR...
10 models listed
Tsukiji Manufacturing Co., Ltd.
390+ people viewing
Last viewed: 5 hours ago
Standard Response
4.0 Company Review
All photos and dimension tables are of the steel JIS-10K type. *Other product numbers are available.
10 models listed
IWC Co., Ltd.
50+ people viewing
Last viewed: 7 hours ago
■Structure ・Insert the tube into the flange collar and weld it together ・Flange is loose type ■Applications Misalignment of piping, etc., ground...
DAIDOH TOKUSHU KOGYO CO.,LTD.
20+ people viewing
Last viewed: 1 day ago
Overview ■Structure ・Insert the tube into the flange collar and weld it together. ・Flange is loose type ■Production caliber 15A~300A ■Applicabl...
DAIDOH TOKUSHU KOGYO CO.,LTD.
20+ people viewing
Last viewed: 23 hours ago
Overview ■Structure ・Exterior ribbon braided type (plate braided) ・The blade is firmly secured with a band. ・Flange is loose type ■Production c...
DAIDOH TOKUSHU KOGYO CO.,LTD.
20+ people viewing
Last viewed: 8 hours ago
Overview ■Structure ・Attach the lap joint to the tube ・Flange is loose type ■Production caliber 10A~350A ■Applicable tube ・Spiral tube ・One p...
DAIDOH TOKUSHU KOGYO CO.,LTD.
20+ people viewing
Last viewed: 7 hours ago
Overview ■Structure Flange is loose type ■Production caliber 40A~500A ■Applicable tube ・One pitch tube ・Super one pitch tube ・Annular tube ・F...
DAIDOH TOKUSHU KOGYO CO.,LTD.
20+ people viewing
Last viewed: 8 hours ago
Overview ■Structure ・Exterior ribbon braided type (plate braided) ・Attach the tube to the end pipe ・Flange is loose type ■Production caliber 20...
