9 Flange Screw Manufacturers in 2024
This section provides an overview for flange screws as well as their applications and principles. Also, please take a look at the list of 9 flange screw manufacturers and their company rankings. Here are the top-ranked flange screw companies as of April, 2024: 1.H&W Manufacturing..
Table of Contents
1985-2014: Worked for Alstom Corporation, ABB Corporation, and Gadelius Corporation, designing Jungstrom air preheaters and mechanical design of diamond soot blowers. (ABB Corporation: https://new.abb.com/jp)
2014-2021: Worked as an engineering and project manager at Alvos Inc.
https://www.linkedin.com/in/yoichi-hiroki-92192394/
What Is a Flange Screw?
A threaded flange is a type of threaded joint used in piping, in which the connection method between the flange and the pipe (pipe) is a threaded type.
A Flange Screwed Flange has a female tapered pipe thread on the inside diameter of the flange, and is connected to a pipe end with a male tapered pipe thread by threading it.
The taper pipe thread is defined in JIS B0203 as "a thread whose main purpose is to ensure tightness of the threaded portion when joining piping, piping components, fluid equipment, etc.".
Applications of Threaded Flange Screws
Figure 1. Example of screwed flange use
Flange Screws are used for air piping where the fluid pressure and temperature are not very high and leakage of a certain amount of fluid is not dangerous. Unlike other connection methods (welding, loose joint, etc.), the use of threaded flanges is limited.
When a Flange Screw is used and a leak occurs, it is necessary to remove the pipe, rewrap the sealing tape, and retighten it. In many cases, this type of flange is used when the piping and flange must be easy to install and remove.
In addition, the connection method between the piping and the flange is threaded, which can be used when welding or other fireproofing cannot be used on site. In selecting Flange Screws, the material, pressure resistance, size, etc. are selected based on the type of fluid, pressure, temperature, flow rate, etc.
Principle of Flange Screw
Figure 2. Principle of screwed flange
The principle of a Flange Screw is exactly the same as that of an ordinary piping flange, and the flange surfaces to be connected are sealed by making them adhere to each other.
The screw standards used are as follows
- JIS B0203 Tapered pipe threads
- ASME B1.20.1 Pipe Threads, General Purpose, Inch
Flange Screws are used when the pressure and temperature of the fluid to be used are limited so that leaks are not hazardous in the unlikely event that they occur. When screwing in piping, sealing tape or similar material can be wrapped around the male threads of the piping to improve the sealing performance of the installation.
Flange Screws, like normal pipe flanges, require bolts and nuts for flange fastening to be evenly tightened. Uneven tightening may result in leakage. For this reason, it is common practice to tighten bolts and nuts diagonally, rather than in the order of their sequence.
It is also important to tighten the bolts and nuts at the specified torque value for the gasket material and bolt/nut. Tighten the bolts and nuts in diagonal order, gradually increasing the tightening torque until the required tightening torque value is reached. When used with high-temperature fluid, the tightening of the threads may loosen due to thermal expansion after the actual flow of high-temperature fluid, in which case the bolts and nuts need to be retightened.
Types of Threaded Flange Screws
Figure 3. Example of JIS B2220/B2239 screwed flange
1. Classification by Standard
There are various standards for flanges, such as JIS, JPI, ASME/ANSI, etc. Typical examples are as follows.
- JIS B2220 Steel pipe flanges
- JIS B2239 cast iron flange
- JPI-7S-15-2011 Flanges for petroleum industry
- ASME/ANSI B16.5 Pipe Flange and Flanged Fittings
In "JIS B2220 Steel Pipe Flanges," nominal pressure ranges from 5K to 63K, but Flange Screws are applied to nominal pressures of 5K, 10K, 16K, and 20K. In "JPI-7S-15-2011 Flanges for the Petroleum Industry" and "ASME/ANSI B16.5 Pipe Flange and Flanged Fittings", the flanges are applied to nominal pressure classes 150, 300, 600, 900, 1500 and 2500.
The following is an example of JIS standard flange specifications.
- JIS B 2220 TR FF 10K 80A SCS 13A
- Steel Pipe Flange, Threaded Flange, Full face, 10K, 80A, SCS 13A
2. Classification by Material
Typical flange materials in JIS standards are as follows
- Rolled material: JIS G3101 SS400, G4051 S20C/S25C
ASTM A515 70, A516 70 - Forging: JIS G3201 SF390A/SF40A, G3202 SFVC1
ASTM A105, A350 LF2 - Casting material: JIS G5101 SC410/SC480, G5151 SCPH1
ASTM A216 WCB
Low Alloy Steel
- Rolled: ASTM A201 A/B, A387 11 CL2
- Forging: JIS G3202 SFVC2A, G3203 SFVAF1/SFVAF11A
ASTM A182 F1/F11 CL2/F12 CL2 - Casting material:JIS G5151 SCPH2/SCPH11/SCPH21
ASTM A217 WC1/WC6, A352 LC1
- Rolled materials:JIS G4304/4305 SUS304/SUS304L/SUS316/SUS316L
ASTM A240 304/304H/304L/316/316H/316L/317 - Forging: JIS G3214 SUSF304/SUSF304L/SUSF316/SUSF316L
ASTM A182 304/304H/304L/316/316H/316L - Casting materials:JIS G5121 SCS13A/SCS14A/SCS16A/SCS19A
ASTM A351 CF3/CF3M/CF8/CF8M/CG8M
Flanges are used in pairs, and both flanges must be made of the same material. The selection of flange material is indicated in each standard; in the JIS standard, "nominal pressure" and "material group number" are selected according to the "maximum working pressure" and "fluid temperature" of the working fluid flowing in the pipe.
It is important to select materials from several standard materials classified by material group number according to the flange manufacturing method, operating environment, cost, and other factors.
List of 9 Flange Screw Manufacturers
*Including some distributors, etc.
Sort by Features
- Default
- Company Size: largest first
- Year Founded: oldest first
- Year Founded: earliest first
Sort by Area
- United States of America
- China
- India
- Taiwan
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H&W Manufacturing.
Flange Screw
Company Overview
H&W Manufacturing., founded in Spring, Texas in 1978, is a precision machine shop that specializes in machining customized components. The company's product and service portfolio includes CNC machines that are capable of manufacturing complex components with unparalleled precision for materials, including metals, plastics, and composites, Custom Tooling and Fixturing and machining capabilities such as Swiss Screw Machining, CNC Milling and CNC Turning. It also provides turnkey solutions including Assembly and parts kitting, Gun drilling, and Heat treating.
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Kalpataru Corporation
Hex Flange Bolt
Manufacturer Overview
Kalpataru Corporation, founded in Mumbai, Maharashtra in 2009, is a manufacturer of Phillips Screws, Mild Steel Washer, MS Nut, MS Bolt, and MS Fasteners. The company manufactures stainless steel fasteners including socket head Allen cap screws, ss cheese head screws, captive panel fasteners, and stainless steel lock nuts from Mumbai. it also has design and quality testing departments and offers services such as prototyping, customer support, custom manufacturing, and delivery.
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Shenzhen Heat Hardware Co., Ltd
Flange Bolts
Manufacturer Overview
Shenzhen Heat Hardware Co. Ltd, founded in the year 2003, and based in Shenzhen City, China, is a manufacturer and supplier of screws, bolts, and fasteners. Their product portfolio includes a diverse range of screws, bolts, and fasteners. The company offers one-stop customized solutions of screws, custom bolts, and fasteners for producing, designing, supplying, and exporting. The company is ISO-certified for environmentally friendly products. The products are used in various industries which include automotive, electronic, electric, communication, medical, and military projects.
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ACube Fasteners Pune
FLANGE HEX SCREWS
Manufacturer Overview
ACube Fasteners Pune is a manufacturer of screws, bolts and special critical fasteners. Established in 2012, the company is based and headquartered in Pimpri-Chinchwad, Maharashtra, India. The company, an ISO 9001-2015 company, specializes in designing and producing many types of screws and fasteners for various applications. Its product range includes special screws and bolts, machine and hex screws, special and weld screws, self-tapping screws and rivets, serving industries such as construction, manufacturing, and automotive. ACube Fasteners offers services like customized fastener solutions and technical support.
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CREST PRECISION SCREWS PVT. LTD.
Flange Bolts
Manufacturer Overview
CREST PRECISION SCREWS PVT. LTD., founded in Maharashtra, India in 1993, is a manufacturer of High Tensile Fasteners for all kinds of segments like windmills, Construction, Hydropower, and Engineering industries. The company's product portfolio includes Hexagon Socket Head Shoulder Screws, Hexagon Socket Countersunk head Screws, Heavy Hex Bolts-for High Strength Structural Bolting, Spring Washers, and Machine Screws and the products are AN ISO9001:2015; ISO14001:2015; ISO45001:2018 certified. The company also offers Inventory Management and Engineering Services as well as technical support.
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Fareast Metal International Co.Ltd
Metric Flange Bolts
Manufacturer Overview
Fareast Metal International Co.Ltd., founded in Taiwan in 1993, is a manufacturer of flange bolts and 12 points. The company's product portfolio includes a wide range of flange bolts designed to meet diverse application requirements in various sizes, materials, and finishes, ensuring compatibility with a wide array of projects, screws, and other specialty bolts. The company has ISO 9002, CNLA, and A2LA certifications and operations in Taiwan and the United States of America.
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Creative Fasteners
Flange Screw
Manufacturer Overview
Creative Fasteners is an Indian manufacturer of various fasteners founded in 2010 and based in Vasai, Maharashtra. The company produces a wide range of standard and non-standard fasteners including solid and semi-tubular rivets, bolts, grub screws, and washers. These are made from various materials, such as stainless steel, brass, copper, and aluminum. It also offers precision turned and sheet metal components, as well as fasteners tailored to customer specifications. Creative Fasteners primarily serves clients in the automobile, machine manufacturing, furniture, and home appliance industries.
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Ananka Group
Flange Head Screw
Manufacturer Overview
Ananka Group is a fastener manufacturer established in Mumbai, India. While being specialized in inconel, monel and incoloy fasteners, the company has multiple other items in its catalogue, including flanges and rods. Its products are available for shipping to more than 90 countries, and are part of projects in the aerospace, food, automotive, marine, railway and paper industries alike. The company holds multiple certificates, such as ISO 9001:2015 and ISO 14001:2015. In addition, it also displays a weight chart of their products available to users on its website.
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Haiyan Longcheng Standard Parts Co. Ltd.
HDG HEX FLANGED CONCRETE SCREW
Company Overview
Haiyan Longcheng Standard Parts Co. Ltd., founded in China, is a manufacturer of Square Head Wood Screw With Turning Suppliers. The company's product portfolio includes Stainless steel U-bolts-bolt, Hexagonal wood screws, Stainless steel screws, Non-standard screws, and Hexagonal flange screws. The company's factory has an annual export volume of up to 10,000 tons, which can produce Chinese GB standard, German DIN standard, international ISO standard, and British standard. National BS.
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Flange Screw Manufacturer Ranking
*Including some distributors, etc.Ranking as of April 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | H&W Manufacturing. |
100.0%
|
Derivation Method
The ranking is calculated based on the click share within the flange screw page as of April 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
- CREST PRECISION SCREWS PVT. LTD.: 2012 (12 years ago)
- Creative Fasteners: 2010 (14 years ago)
- Kalpataru Corporation: 2009 (15 years ago)
Company with a History
- Fareast Metal International Co.Ltd: 1993 (31 years ago)
- Kalpataru Corporation: 2009 (15 years ago)
- Creative Fasteners: 2010 (14 years ago)
Flange Screw Manufacturers in United States
*Including some distributors, etc.
Global Distribution of Flange Screw Manufacturers by Country
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
India
|
3 | 42.9% |
China
|
2 | 28.6% |
United States of America
|
1 | 14.3% |
Taiwan
|
1 | 14.3% |
