Aluminum Flange

Ningbo Zhouchi Vehicle Industry Co., Ltd

Ningbo Zhouchi Vehicle Industry Co., Ltd. was founded in 1992, located in Binhai Industrial Park of the beautiful coastal port city -Ningbo. Now our company covers the total area of 16000 square meters, with 150 staffs, including 20 quality inspectors and engineers. Our turnover is around12 Millions USD. Our company specializes in Aluminum Die-casting and Zinc Die-casting, CNC machining and assembling.

Why Choose Us

01/

Experienced Team
Our team of engineers and technicians has years of experience in the industry, and we leverage that expertise to provide our clients with the best possible solutions.

02/

Exceptional Customer Service
We pride ourselves on providing exceptional customer service and technical support to our clients, ensuring that they have a smooth and hassle-free experience.

03/

Quality Products
We use only the highest-grade materials and advanced manufacturing techniques to produce products that are reliable, durable, and perform to the highest standards.

04/

Competitive Price
We have professional sourcing team and cost accounting team, stive to reduce cost and profit and provide you a good price.

05/

Sustainable Development
Establish a good reputation and brand value in the industry, and promote the sustainable, stable, rapid and healthy development of the enterprise.

06/

One Stop Solution
From the begining inquiry and throughout the entire process until you receive the goods. we are dedicated to supporting you every step of the way.

CNC Flange
CNC flange can be precisely machined into various specifications and shapes, thereby achieving the connection and sealing of various pipelines, valves, pumps, and containers. Featuring high...
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Cover Top Flange
Cover Top Flange is an important component for connecting pipes and fittings, usually composed of two flanges with the same connection surface, fixed in the middle by bolts and washers. The main...
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Lower Flange
The main function of the lower flange is to connect and seal, used to connect two pipelines, critical or equipment, and ensure the sealing of the connection to prevent medium leakage. Its function...
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CNC Flange
CNC flange can be precisely machined into various specifications and shapes, thereby achieving the connection and sealing of various pipelines, valves, pumps, and containers. Featuring high...
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Stay Ring Lower Flange
The Stay ring lower flange ring can effectively connect the seat ring with related equipment or pipelines, thereby ensuring the air tightness of fluid flow inside the equipment or pipelines; By...
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Upper Flange
The upper flange is a component that connects pipes to each other, connected to the top of the pipe. Its main functions include fixing and sealing, tightening the connection, convenient...
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What Is Aluminum Flange

Aluminum flanges are a practical choice in specific industrial applications. They are crafted from lightweight aluminum metal and offer unique advantages.

Advantages of Aluminum Flange

Lightweight Design

Aluminum flanges are notably lighter compared to their steel counterparts. This quality helps reduce the overall weight of a system, which can be important in certain applications.

Cost-Effective

These flanges are budget-friendly due to lower material and production costs. They can be a wise choice for projects where expenses are a significant concern.

Efficiency

Aluminum flanges are quick to produce, making projects more time-efficient. This efficiency can minimize downtime and improve overall timelines.

Custom Sizing

They can be manufactured in various sizes, tailored to specific needs. This flexibility allows aluminum flanges to adapt to a wide range of industrial systems.

Aluminum Flange Specification

Size	Seamless ½” to 24”, Welded Two Joint / Two Halve Fittings 6” to 72”
Standard	ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Dimensions	ANSI/ASME B16.5, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Grade	6063, 6061T6/T651, 6082 T6/T651, 5052, 5083, 5086, 7075, 1100, 2014, 2024
Class	150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Aluminum flanges properties (theoretical)

Molecular Weight	26.98
Appearance	Silvery
Melting Point	660.37 °C
Boiling Point	2467 °C
Density	2700 kg/m3
Solubility in H2O	N/A
Electrical Resistivity	2.6548 microhm-cm @ 0 °C
Electronegativity	1.5 Paulings
Heat of Fusion	2.55 Cal/gm mole
Heat of Vaporization	67.9 K-Cal/gm at om at 765 °C
Poisson's Ratio	0.35
Specific Heat	0.215 Cal/g/ K @ 25 °C
Tensile Strength	6800 psi Coldroled 16,000 psi.
Thermal Conductivity	2.37 W/cm/ K @ 298.2 K
Thermal Expansion	(25 °C) 23.1 µm·m-1·K-1
Vickers Hardness	167 MPa
Young's Modulus	70 GPa

How To Order Aluminium Flanges

Flange type (welding neck, slip-on, threaded, lap joint flange, etc)
Aluminium Flange specification (example ASME B16.5, ASME B16.47 type A, EN 1092-1, JIS, UNI, DIN, etc.)
Nominal pipe size (NPS)
Aluminium Alloy Flange rating (or class): flanges' rating can range from 150 to 2500 for ASME flanges, from 5k to 30k for JIS B2220 flanges and KS1503 flanges; from PN 6 to PN 100 for European and Russian-standard flanges (DIN, UNI, EN 1092-1, GOST 12820 / 12821-80); Class 600/3, 1000/3, 1600/3, 2500/3, 4000/3 for SANS/SABS flanges (South African standard for flanges)
Pipe schedule (for welding neck and socket weld flanges)
Aluminium Flange facing type (FF; RF, RTJ): according to ASME B16.5, the raised face is the standard facing for flanges (different facings, like RTJ or flat face FF, have to be ordered specifically)
Aluminium Alloy Flange surface finish (smooth, stock, concentric serrated, etc)
Aluminium Flange Quantity

Flanges ::
Flange Standard, Fitting Standard, Pipe Standard, Valve Standard
ANSI Flange	DIN Flange	EN Flange
ASME Flange	JIS/KS Flange	GB Flange
GOST Flange	BS Flange	UNI / Api Flange
Flanges ::
Blind Flanges	Reducing Threaded Flanges	Lap Joint Flanges
Flange Gaskets	Threaded Flanges	Socketweld Flanges
Flanges Bolts	Ring Flange	Spectacle Blind Flanges
Weld Neck Flanges	Orifice Flange	Slip-On-Flanges
High Hub Blinds Flanges

Why Might an Aluminum Flange Fail

As is the case with any other type of flange, it is important to note that while aluminum flanges do offer a number of benefits, they are also capable of failing for a number of reasons. In the event that an aluminum flange should fail and require repair, the same steps would typically be required as when repairing any other type of flange, including stainless steel flanges. This usually involves re-machining or welding the flange. In some instances, depending on the severity of the failure, it may be necessary to simply replace the flange.

Differences Between Aluminum Flanges And Carbon Steel Flanges

Material
Aluminum flange: Usually made of aluminum alloy, it has lightweight, high strength, good conductivity, and certain corrosion resistance. Aluminum flanges are suitable for applications that do not require high temperature, high pressure, and high corrosion resistance.
Carbon steel flange: Made of carbon steel, usually ASTM A105 or ASTM A350 LF2. Carbon steel flanges have high temperature and pressure resistance, making them suitable for a wider range of industrial applications, including high-temperature and high-pressure environments.

Temperature And Pressure Resistance Performance
Aluminum flange: Aluminum alloy has relatively low resistance to temperature and pressure and is usually not suitable for high-temperature and high-pressure pipeline systems.
Carbon steel flange: Carbon steel flange is suitable for working environments with high temperature and pressure and has better temperature and pressure resistance performance.

Purpose
Aluminum flange: Mainly used in some lightweight pipeline systems, power systems, and applications that require good conductivity and lightweight characteristics.
Carbon steel flange: Widely used in industrial pipeline systems, including petroleum, chemical, power and other fields, suitable for applications under various temperature and pressure conditions.

Conductivity
Aluminum flange: Aluminum is a good conductive material, so aluminum flanges are suitable for some situations that require conductivity, such as power systems.
Carbon steel flange: Carbon steel has relatively poor conductivity, so it may not be the preferred choice in applications that require excellent conductivity.

Cost
Aluminum flange: It is usually relatively expensive because the manufacturing cost of aluminum alloy is higher.
Carbon steel flanges: Generally speaking, the manufacturing cost of carbon steel flanges is relatively low, so they may be more competitive in some cost sensitive projects.

Aluminium Flanges Chemical Composition

Grade	Si	Fe	Cu	Zn	Mn	Mg	Ti	Cr
Aluminium	0.40 – 0.80	0.70 max	0.15-0.40	0.25 max	0.15	0.8-1.2	0.15 max	0.04-0.35

Common Flange Types

Threaded Flanges
Also known as a screwed flange, this style has a thread inside the flange bore which fits with the matching male thread on the pipe or fitting. The threaded connection means you can avoid welding in many use cases. Simply match the threading to the pipes you wish to connect.

Socket-Weld Flanges
Ideal for smaller pipe diameters in low-temperature and low-pressure scenarios, socket-weld flanges feature a connection in which you place the pipe into the flange and then secure the connection with a single multi-pass fillet weld. This makes this style simpler to install than other welded flange types while avoiding the limitations associated with threaded ends.

Slip-On Flanges
Slip-on flanges are very common and are available in a large range of sizes to accommodate systems with higher flow rates and throughput. Simply match the flange to the outer diameter of the pipe you intend to connect. Installation is slightly more technical as you'll need fillet weld both sides to secure the flange to the pipe.

Lap Joint Flanges
Featuring a two-piece design, lap joint flanges require butt welding of the stub end to the pipe or fitting with the use of a backing flange to create the flanged connection. This design makes this style popular for use in systems with limited physical space or systems which require frequent dismantling and maintenance.

Weld Neck Flanges
Like lap joint flanges, weld neck flanges require butt welding for installation. However, their integrity, performance in systems with multiple repeat bends, and the ability to use them in high-pressure and high-temperature systems make them a leading choice for process piping.

Blind Flanges
Used for terminating or isolating piping systems, blind flanges are essentially boltable blank discs. When installed properly and combined with the correct gaskets, they can achieve an outstanding seal which is easy to remove when needed.

Specialty Flanges
The flange types listed above are the most common. However, there is a range of additional specialized flange types available to suit a range of uses and environments. Other options include nipoflanges, weldoflanges, expanding flanges, orifice, long weld neck and reducing flanges.

Machining Process Of Flange Parts

Material Selection
Picking the right flange materials is the first stage in the machining process. The most popular materials for making flanges are alloy steel, carbon steel, or stainless steel. However, the ideal material often depends on the application's temperature, pressure, and corrosion resistance needs.

Material Cutting and Shaping
Following selection, the material is sliced and formed. Big metal plates are cut into smaller pieces to get the right size for the flange. The produced parts are then heated to the proper temperature to prepare them for further processing.

Heat Treatment
Depending on the material and purpose of a flange, the flanges may undergo heat treatment methods such as annealing, quenching, or tempering. Heat treatment boosts the flange's mechanical properties while enhancing its resilience, toughness, and resistance to wear and corrosion.

Forming and Forging
The heating process makes the metal components malleable, facilitating the proper flange shape development. Machinists utilize different methods to forge the flange, including hot forging and cold forging. The metal is formed at room temperature in cold forging, while hot forging involves forming heated material/metal under high pressure.

Machining
After the initial cutting and shaping, the flange is machined to achieve precise tolerances and to refine its dimensions. This operation includes facing sealing surfaces, chamfering edges, and drilling holes for bolt connections. CNC (Computer Numerical Control) machines are often used for automated and precision machining.

Surface Finish
Flanges might undergo surface finishing operations like grinding or polishing to achieve the desired smoothness, remove surface defects, and improve their overall look.

Inspection And Quality Control
Quality control is an important stage in the production of flanges. Flanges undergo a thorough examination process to ensure they comply with the appropriate norms and specifications. Inspecting for quality control includes measurement inspections, finishes and surface analyses, and non-destructive testing methods like ultrasound or magnetic particle analysis.

FAQ

Q: What are Aluminum flanges, and how are they used in industrial applications?

A: Aluminum flanges are components used to connect pipes, valves, and pumps in various industrial systems. They are employed in piping systems for their lightweight and corrosion-resistant properties.

Q: What advantages do Aluminum flanges offer compared to other materials?

A: Aluminum flanges are known for their lightweight design, cost-effectiveness, quick production, and custom sizing capabilities. They are efficient and adaptable to different project requirements.

Q: In which situations is it recommended to use Aluminum flanges?

A: Aluminum flanges are ideal for low-pressure systems, cost-conscious projects, and applications where weight reduction is a priority. They are also suitable when a quick production turnaround is necessary.

Q: What types of Aluminum flanges are available, and how do they differ?

A: Aluminum flanges come in various types, including low-pressure, medium-pressure, and high-pressure threaded pipe fittings. Unthreaded flanges and different wall thickness options are also available to suit specific needs.

Q: Are there any limitations to using Aluminum flanges?

A: While aluminum flanges have their advantages, they may not be the best choice for applications exposed to highly corrosive materials or extreme environmental conditions, where other materials like stainless steel could be more suitable.

Q: How can one ensure the durability of Aluminum flanges in industrial settings?

A: Proper maintenance, regular inspection, and selecting a reputable aluminum flange manufacturer are essential steps to ensure durability and reliability in industrial applications.

Q: What is the sustainability aspect of Aluminum flanges?

A: Aluminum is a recyclable material with a high strength-to-weight ratio. It naturally resists corrosion within a specific pH range, making it environmentally friendly and durable when used correctly.

Q: What factors should be considered when choosing between Aluminum and other flange materials?

A: Key factors include weight requirements, cost considerations, project timelines, and the specific environmental conditions the flanges will be exposed to.

Q: Are there any safety concerns associated with using Aluminum flanges?

A: When used correctly and maintained properly, aluminum flanges are safe. However, like any component in an industrial system, they should be regularly inspected for wear and tear to prevent potential issues.

Q: Are there any size limitations for Aluminum flanges?

A: Aluminum flanges can be manufactured in various sizes to match the requirements of different industrial applications. The choice of size depends on the specific needs of the project.

Q: What are the common industries that benefit from using Aluminum flanges?

A: Industries such as manufacturing, construction, and petrochemicals often benefit from the use of aluminum flanges due to their lightweight, cost-effective, and efficient properties.

Q: Can Aluminum flanges be used in high-temperature applications?

A: Aluminum flanges are generally not recommended for high-temperature applications because aluminum's melting point is lower than some other materials like steel. In such cases, materials with higher heat resistance may be more suitable.

Q: How can one identify the right Aluminum flange for a specific project?

A: The choice of an Aluminum flange should align with project requirements, taking into account factors like pressure, temperature, weight, and cost. Consulting with experts and manufacturers can help in selecting the most suitable flange.

Q: Can Aluminum flanges be modified or repaired if needed?

A: Yes, Aluminum flanges can be modified or repaired through processes like re-machining or welding. The extent of the repair depends on the nature and severity of the issue. In some cases, replacement may be necessary.

Q: What is the purpose of a flange in piping?

A: The main use of flange is to connect pumps, pipes, valves, and other equipment to make a pipework system. Usually, flanges are threaded or welded, and you can connect two flanges by bolting them with gaskets and providing a seal that gives easy access to the piping system.

Q: What is the most commonly used flange?

A: The Weld Neck flange is the most commonly requested flange. It features a neck extension with a tapered hub, a 37.5-degree bevel, and a 1/16” landing at the point of the weld. This will butt directly onto another pipe with a similar level, where it will be welded together with a 75-degree weld.

Q: What is Advantages of Aluminum Pipe Flanges？

A: Lightweight.
More Corrosion-Resistant.
Non-Magnetic.
Better Heat Conductivity.
More Affordable.
Marine Applications.
Heating, Ventilation, and Air Conditioning (HVAC) Systems.
Automotive Applications.

Q: Which flange can handle more pressure?

A: A Class 300 flange can withstand more pressure and is heavier than a Class 150 flange. A Class 300 flange means that the flange's safe working pressure at the rated temperature for a given material is 300 psi (20.6 bar).

Q: How do I choose a flange for piping?

A: Generally, your flange material will match your pipe material, but this is not always the case. Consider the strengths and weaknesses of each material when designing a piping system; the material should suit the application requirements or it may fail prematurely.

Q: Can Aluminum flanges be used in plumbing applications?

A: Aluminum flanges can be used in plumbing, but their suitability depends on the specific plumbing system's requirements. In situations involving highly corrosive materials, other materials like stainless steel may be more appropriate.

As one of the leading aluminum flange manufacturers and suppliers in China, we warmly welcome you to buy cheap aluminum flange from our factory. All customized products are with high quality and competitive price.

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