En1092 ASME B16.5 BS4504 As2129 SABS 1123 DIN2501 DIN2673 Pn10 Pn16 150lbs S235jr S275jr A105 Blind Mild Steel Plate Back Ring Plate Flange

What is a flange?

A flange is a protruded ridge, lip or rim, either external or internal, that serves to increase strength (as the flange of an iron beam such as an I-beam or a T-beam); for easy attachment/transfer of contact force with another object (as the flange on the end of a pipe, steam cylinder, etc., or on the lens mount of a camera); or for stabilizing and guiding the movements of a machine or its parts (as the inside flange of a rail car or tram wheel, which keep the wheels from running off the rails). The term "flange" is also used as a kind of tool used to form flanges.

 

A flange can also be a plate or ring to form a rim at the end of a pipe when fastened to the pipe (for example, a closet flange). A blind flange is a plate for covering or closing the end of a pipe. A flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together.

Piping components can be bolted together between flanges. Flanges are used to connect pipes with each other, to valves, to fittings, and to specialty items such as strainers and pressure vessels. A cover plate can be connected to create a "blind flange". Flanges are joined by bolting, and sealing is often completed with the use of gaskets or other methods. Mechanical means to mitigate the effects of leaks, like spray guards or specific spray flanges, may be included. Industries, where flammable, volatile, toxic or corrosive substances are being processed, have a greater need of special protection at flanged connections. Flange guards can provide that added level of protection to ensure safety.

There are many different flange standards to be found worldwide. To allow easy functionality and interchangeability, these are designed to have standardized dimensions. Common world standards include ASA/ASME (USA), PN/DIN (European), BS10 (British/Australian), and JIS/KS (Japanese/Korean). In the USA, the standard is ASME B16.5 (ANSI stopped publishing B16.5 in 1996). ASME B16.5 covers flanges up to 24 inches in size and up to pressure rating of Class 2500. Flanges larger than 24 inches are covered in ASME B16.47.

In most cases, standards are interchangeable, as most local standards have been aligned to ISO standards; however, some local standards still differ. For example, an ASME flange will not mate against an ISO flange.^{[citation needed]} Further, many of the flanges in each standard are divided into "pressure classes", allowing flanges to be capable of taking different pressure ratings. Again these are not generally interchangeable (e.g. an ASME 150 will not mate with an ASME 300).^[3]

These pressure classes also have differing pressure and temperature ratings for different materials. Unique pressure classes for piping can also be developed for a process plant or power generating station; these may be specific to the corporation, engineering procurement and construction (EPC) contractor, or the process plant owner. The ASME pressure classes for flat-face flanges are Class 125 and Class 250. The classes for ring-joint, tongue and groove, and raised-face flanges are Class 150, Class 300, Class 400 (unusual), Class 600, Class 900, Class 1500, and Class 2500.^[3]

The flange faces are also made to standardized dimensions and are typically "flat face", "raised face", "tongue and groove", or "ring joint" styles, although other obscure styles are possible.

Flange designs are available as "weld neck", "slip-on", "lap joint", "socket weld", "threaded", and also "blind".

 

 

 

 

ASME standards

ASME standards (U.S.)

Pipe flanges that are made to standards are called out by ASME B16.5 or ASME B16.47, and MSS SP-44. They are typically made from forged materials and have machined surfaces. ASME B16.5 refers to nominal pipe sizes (NPS) from 1⁄2" to 24". B16.47 covers NPSs from 26" to 60". Each specification further delineates flanges into pressure classes: 150, 300, 400, 600, 900, 1500 and 2500 for B16.5, and B16.47 delineates its flanges into pressure classes 75, 150, 300, 400, 600, 900. However, these classes do not correspond to maximum pressures in psi. Instead, the maximum pressure depends on the material of the flange and the temperature. For example, the maximum pressure for a Class 150 flange is 285 psi, and for a Class 300 flange, it is 740 psi (both are for ASTM a105 carbon steel and temperatures below 100°F).

 

European dimensions 

Most countries in Europe mainly install flanges according to standard DIN EN 1092-1 (forged stainless or steel flanges). Similar to the ASME flange standard, the EN 1092-1 standard has the basic flange forms, such as weld neck flange, blind flange, lapped flange, threaded flange (thread ISO7-1 instead of NPT), weld-on collar, pressed collars, and adapter flange such as flange coupling GD press fittings. The different forms of flanges within the EN 1092-1 (European Norm/Euronorm) are indicated within the flange name through the type.

Similar to ASME flanges, EN1092-1 steel and stainless flanges, has several different versions of raised or none raised faces. According to the European form, the seals are indicated by different forms:

 

Other countries

Flanges in the rest of the world are manufactured according to the ISO standards for materials, pressure ratings, etc. to which local standards including DIN, BS, and others, have been aligned.

 

 

 

Weifang Jinjian Titanium Equipment Co.,Ltd was founded in 1996 as a high-tech enterprise with the highest A1 and A2 class pressure vessel manufacturing and design qualifications now. It is the earliest and largest manufacturer of special materials equipment in East China. As well as the base of special material equipment in China. Our company covers an area of 80000m², with 56000 m² of workshop area, 6000 m² of the warehouse area, and 600 m² of flaw detection room area. We have 46 engineers& technicians, 72 welders, for special pressure vessels. We have passed the ISO9001 / 14001 / 18000 certification. We have satisfied products, advanced detection measures, sound quality assurance system, scientific management experience, comfortable environment and convenient transportation. We warmly welcome people with lofty ideals from all walks of life at home and abroad to guide us.

 

1. Carefully check the quantity and quality of equipment before packing.
2. Good packed by plastic wrap.
3. Iron Frame, Suitable for land transport and sea freight.
4. Fittings and spare parts are packed in a wooden pallet.
5. Add labels and shipping marks.

 
1. Delivery Terms: CIF, CFR, FOB, EXW, transport by air, by sea, by express DHL, FedEx, TNT, EMS, etc.
2. Payment Terms: Wire Transfer (T/T), Irrevocable L/C at Sight, etc.
3. Minimum Order Quantity (MOQ): 1Ton or 100Pcs per size.
4. Carefully check the quantity and quality of equipment before packing.
5. Good packed by plastic wrap. Iron Frame, Suitable for land transport and sea freight.
6. Fittings and spare parts are packed in wooden pallets.
7. Add labels and shipping marks.




 

 

  1. Southeast  Asia customers   2. Russian customers
    3. German customers               4. Kazakhstan  customers
    5. American customers             6. European customers
    7. Thailand customers              8. India  customers
    9. Vietnam customers              10. Middle  East  customers
   11. India customers                   12. Uzbekistan  customers
   13. Thailand customers            14. Ukraine  customers
   15. Russian customers 

 

Q: Are you a manufacturer or a trader?
We're a manufacturer with more than years of professional production experience.
Q: Can you accept OEM?
Yes, OEM is acceptable. Just pls provide us with the drawing or sample, we will production totally according to your requirements.
Q: Can you provide us with the design drawing?
Yeah, of course, we will provide you with the drawing after you paid or prepaid.
Q: Can your factory produce products according to our drawings?
Yes, we can. Most products can be customized, including the Logo on products.
Q: What kind of your packaging?
Neutral plywood or wooden box packaging or according to customer's requirements.
Q: How long is your delivery time?
Normally 30days after payment, and we promise we will deliver as soon as we can.