Plate flange–Definition, Usage and all you should know about it

plate flange

Plate flange–Definition, Usage and all you should know about it

Plate flanges are a versatile tool used in numerous piping systems. These metal circles are available in multiple varieties, each of which can be manufactured with different materials, shapes, and sizes. Plate flanges provide strength to support the pipe and keep it connected to other components. They also make for easier installation because they can be quickly attached or removed when needed.

In this blog, we will introduce all the basic information about the plate flange.

plate flange

The definition of plate flange is: a plate flange is a type of pipe fitting used in industrial or commercial situations to create a secure, sealed interface between two pipes. It works by having one end that is tightened against the other pipe, typically with bolts, forming a stronghold.
Plate flanges are manufactured from metal plates, and these metal plates can be made from various materials such as aluminum, stainless steel, brass, or even carbon steel. In addition to joining two components together, plate flanges create a tight seal between them.
This seal prevents the leak of liquid and gas from one component to another and ensures that there is no contamination of either component by harsh chemicals. Furthermore, the raised surface on the plate flange acts as a buffer to help dampen noise when two components operate at different speeds.
plate flange

How does flange plate work?

Flange plates are a type of fastener that are used to hold two objects together, typically made from metal. They consist of two pieces: one end of the pipe and the plate flange.

The process works by welding the flat and circular plate – the plate flange – onto one end of the pipe and then bolting it to another pipe along with a gasket in between. This creates a tight seal that can withstand pressure, heat, and many other factors. As such, plate flanges are an incredibly practical invention used by anyone when working on fuel or water pipelines.

plate flange

Plate flanges dimension and materials

Plate flange dimensions can range depending on the requirements of the application. Considering the many types of plate flange designs available and their varying sizes, choosing the proper dimension, material, and treatment to both form and function while adhering to any budget or time frame guidelines is advisable.

Here we provide you with the ANSI/ASME B16.5 plate flange specification table.

ANSI/ASME B16.5 Plate Flange Specification
Size 1/2″ (15 NB) to 48″ (1200NB)
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
Dimensions  ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Material Grade
Stainless Steel ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L
Duplex Steel ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
Carbon Steel ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70
DIN DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673
BS BS4504 , BS4504, BS1560, BS10
In Form SORF, WNRF, BLRF, SWRF, LAP Joint, Threaded, Reducing, Spectacle, etc
Flange Face Type Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Value Added Services » CNC Machining
» Customized Flanges
Coating/Surface Treatment Antirust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized

Also, we provide B16.5 plate flange dimensions and approximate masses.

ANSI, ASME, ASA, B16.5 600lb/ Plate Flange RF

ø D b g m J k Holes l Kg.
1/2″ 95,2 14,3 34,9 38,1 22,3 66,7 4 15,9 0,800
3/4″ 117,5 15,9 42,9 47,6 27,7 82,5 4 19,0 1,400
1″ 123,8 17,5 50,8 54,0 34,5 88,9 4 19,0 1,600
1 1/4″ 133,3 20,6 63,5 63,5 43,2 98,4 4 19,0 2,100
1 1/2″ 155,6 22,2 73,0 69,8 49,5 114,3 4 22,2 3,100
2″ 165,1 25,4 92,1 84,1 62,0 127,0 8 19,0 3,700
2 1/2″ 190,5 28,6 104,8 100,0 74,7 149,2 8 22,2 5,400
3″ 209,5 31,7 127,0 117,5 90,7 168,3 8 22,2 7,300
3 1/2″ 228,6 34,9 139,7 133,3 103,4 184,1 8 25,4 8,900
4″ 273,0 38,1 157,2 152,4 116,1 215,9 8 25,4 11,800
5″ 330,2 44,4 185,7 188,9 143,8 266,7 8 28,6 24,500
6″ 355,6 47,6 215,9 222,2 170,7 292,1 12 28,6 29,500
8″ 419,1 55,6 269,9 273,0 221,5 349,2 12 31,7 43,000
10″ 508,0 63,5 323,8 342,8 276,3 431,8 16 34,9 70,000
12″ 558,8 66,7 381,0 400,0 327,1 488,9 20 34,9 86,000
14″ 603,2 69,8 412,7 431,8 359,1 527,0 20 38,1 100,000
16″ 685,8 76,2 469,9 495,3 410,5 603,2 20 41,3 142,000
18″ 742,9 82,5 533,4 546,1 461,8 654,0 20 44,4 175,000
20″ 812,8 88,9 584,2 609,6 513,1 723,9 24 44,4 232,000
22″ 869,9 95,2 641,2 666,7 564,4 777,9 24 47,6 292,000
24″ 939,8 101,6 692,1 717,5 615,9 838,2 24 50,8 330,000

The advantages of plate flange

Plate flanges have a lot of advantages in comparison to other types of flanges. They can create strong joints, allowing for a secure seal that’s useful even under extreme pressure. Since they are thin and flat, they save space and money while still being dependable.

Furthermore, since the plates that make up these types of flanges are fabricated by bending rather than welding them together, their composition is much stronger and less prone to corrosion or fatigue.


Better grain structure compared to forged or cast products

The great grain structure makes plate flanges far more durable and reliable over time due to the increased strength, despite being thicker and heavier than other typical forms of flange materials. The durability and reliability are especially beneficial when plate flanges are used for high-pressure applications, as it ensures there will be no leakage or damage caused by high force or vibrations.

Furthermore, when working with gases, fluids, or other corrosive elements, plate flanges become even more useful due to their strong oxidation ability which not only makes them resistant to any chemical attack but also prevents them from rusting in humid environments.

Extended product life

One of the most rewarding benefits of plate flanges is their extended service life. With superior durability, plate flanges can last several years without issue and can keep industrial settings running smoothly with fewer maintenance concerns or equipment replacement costs.

This is especially valuable for busy production lines that need uninterrupted performance and reliability from their components. Furthermore, plate flanges are dimensionally stable over time and can better tolerate pressure fluctuations than other types of flanges without degrading or failing prematurely.

plate flange

Less maintenance cost

Plate flanges can be used to vastly reduce the normal maintenance costs associated with machinery and hardware in industrial settings. This is because plate flanges are easy to install, compact in size, and more cost-effective than many other methods of fastening when it comes to manufacturing and production.

In addition, they are extremely durable and resilient, making them an ideal choice for applications that require a rugged part that will remain reliable over long periods of time in grueling conditions.

More thought about plate flanges

Plate flanges are becoming more prominent in our lives as manufacturers look for ways to reduce costs and increase efficiency. Different metals and sizes can be used to meet various requirements, depending on what is being joined or connected.

The right plate flange must also be durable enough to withstand the environmental conditions present in a given application.

As a prominent and experienced manufacturer of these components, Taiyuan Forging provides high-quality ASME/ANSI/DIN standard Stainless Steel plate flanges.

The range of options for stainless steel and carbon steel plates has an outstanding reputation for superior performance in both moderate and extreme conditions. And the delivery program ensures that customers always have access to what they need, even for special sizes which can be manufactured as per custom requirements.