What are the Pressure Ratings for different SAE Flanges?

Sae flange, Code 61 flange, Code_62_flange Younglee manufacturer

SAE Flanges are usually forged flanges designed to standard SAE J518C and ISO 6162. They are mostly used in hydraulic systems and high pressure applications. So what are the working pressures for different sizes of SAE hydraulic flanges?

There are two different series divided by the pressure ratings, which are:

  • Pressure 3000 psi series

SAE Flanges of 3000 psi series usually are known as code 61 flanges, and sometimes they are called SAE 3000 flanges or SAE flange class 3000.

3000 psi SAE flanges are designed according to standard ISO 6162-1.

Here below is the chart shows the specific working pressure of the different sizes of SAE 3000 flanges:

Working Pressure of SAE Flanges CODE 61 SAE J518-1 / ISO 6162-1
Inch SizeMax Working PressureGrade 8 and Equivalent Fastener Torque Value
PSIMPaSocket Head UNC (lb-ft)Hex Head UNC (lb-ft)
1/2”5000352418
3/4”5000354433
1”4600324433
1 1/4”4000286852
1 1/2”30002111180
2”30002111180
2 1/2”250017.511180
3”230016218160
3 1/2”5003.5218160
4”5003.5218160
5”5003.5218160

  • Pressure 6000 psi series

Hydraulic SAE Flanges of 6000 psi series usually are known as code 62 flanges, and sometimes they are called SAE 6000 flanges or SAE flange class 6000.

6000 psi SAE flanges are designed according to standard ISO 6162-2.

Here below is the chart shows the specific working pressure of the different sizes of hydraulic flanges SAE class 6000:

Working Pressure of Hydraulic flanges CODE 62 SAE J518-2 / ISO 6162-2
Inch SizeMax Working PressureGrade 8 and Equivalent Fastener Torque Value
PSIMPaSocket Head UNC (lb-ft)Hex Head UNC (lb-ft)
1/2”6000402418
3/4”6000404433
1”6000406852
1 1/4”60004011180
1 1/2”600040218160
2”600040332281

What is the reason of flange seal failure? How to prevent flange leakage?

Analysis of leakage of flange seal  and its Prevention 

Abstract: By analyzing the causes of leakage of flange seal, find out the prevention and solution.

Key words: flange  seal  leakage

Flange connection is widely used in the pipeline connection, such as  in gas, oil, water supply and drainage pipes. There many different types of flanges such as SAE flanges (code 61/62 flanges), Slip on flanges, Lapped flanges, Weld neck flanges, and so on.

As the leakage of flange seal can cause the transmission of materials, gas leakage, pollution, and even cause a major fire or personal injury accidents, it must pay attention to the flange seal. This paper analyzes the factors that cause leakage of flange  and puts forward the solution to the solution.

First, the flange

1,  Sealing surface of flange exists in several forms

(1) Flat sealing surface is a smooth plane, usually in the plane with 2-3 concentric groove, tighten the bolt, the gasket material is easy to both inside and outside the squeeze, not easy to compact, only for the pressure is not high , Non-toxic media, non-flammable and explosive occasions.

(2) The concave-convex sealing surface consists of a concave surface and a convex surface, this sealing surface gasket is easy to center, when compress it ,the gasket will not squeeze out.So it can be used for slightly higher pressure occasions.

(3) The tongue and groove sealing surface consists of a tenon and a groove surface, the gasket placed in the tank, will not be squeezed and moved, because the gasket is narrow, the gasket clamping force correspondingly smaller, its shortcomings is the complex of structure and manufacturing , replace the gasket is also more trouble. Generally used for flammable, explosive, toxic media and high pressure occasions.

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SAE flanges /hydraulic SAE flanges-hot products

SAE flanges | Code 61 flange /code 62 flanges

SAE flanges / hydraulic SAE flanges are the main product of Younglee group’s factory also.  The products are made according to SAE J 518 C and ISO 6162-1/2, and they are for safe and leak-free flange connections. And now we are one of the first class quality SAE flanges manufacturer in China.

SAE flanges, hydraulic SAE flanges
Hydraulic SAE flanges

Our Product group of SAE Flange including:

All the above products of SAE flanges come in two main series:

  • 3000 psi standard pressure series designed according to standard ISO 6162-1, SAE 3000 flange is also known as code 61 flanges;
  • 6000 psi high pressure series designed according to standard ISO 6162-2, SAE 6000 flanges are also known as code 62 flanges;

SAE hydraulic flange Pressure rating and working pressure:

There are mainly two different pressure ratings for the SAE hydraulic flanges as below.

  • Standard pressure series SAE class 3000 flanges: pressure rating 3000 psi with working pressure between 35 bar to 350 bar.
  • High pressure series SAE class 6000 flanges: pressure rating 6000 psi with working pressure maximum 400 bar.

SAE Flange Size Range:

As the professional hydraulic SAE flange manufacturers, Younglee can manufacture and supply full size range of SAE 3000 flanges and SAE 6000 flanges.

  • For class 3000 psi standard pressure series: nominal sizes DN 13 (1/2″) – DN 127 (5″)
  • For class 6000 psi standard pressure series: nominal sizes DN 13 (1/2″) – DN 76(3″)

Materials of SAE code 61/ code 62 flanges:

  • Carbon steel SAE flanges
  • Stainless steel SAE flanges: 304, 316,  316L, 316Ti, or equivalent EN/DIN stainless steel grade 1.4301, 1.4401, 1.4404, 1.4571; other grades of stainless steel SAE flanges are available on customers’ request. 

Main applications:

Younglee SAE Flanges are used as one of the most safe and leak free pipe and tube connectors, widely applied in various hydraulic systems in the following fields of industry:

  • Industrial Hydraulics
    • Injection Moulding Machinery
    • Aluminium Die-Casting Machinery
    • Sintering Machinery
    • Steel Mills
    • Hydraulic Presses
    • Paper Processing
  • Mobile Hydraulics

    • Building Machinery
    • Agricultural Machinery
    • Forestry Machinery
    • Lifting and Material Handling Equipment

As the first class China flange suppliers, we had supplied our products of SAE Flanges to many customers in China market and oversea markets, we had gained very good reputation in these markets.

Main advantages:

Younglee SAE Flanges / hydraulic SAE Flanges have below advantages:

  • High pressure resistance,  6000 psi SAE Flanges / code 62 flanges can be used under working pressure upto 400 bar(6000psi).
  • Precision dimensions
  • Low cost

Customers who are interested in China SAE Flanges please feel free to contact us for more details.

SAE socket weld flanges

SAE Socket Weld Flanges and Counterflanges

SAE Socket Weld Flanges are one of the main types of SAE wled flanges, which are designed and manufactured according to standard ISO 6162-1/ ISO 6162-2. Products are conform to standard SAE J518 as well.

SAE Socket weld flanges

Main styles:

Standard:

  • ISO 6162-1: for 3000 psi standard pressure series (light duty), known as code 61 flanges as well
  • ISO 6162-2: for 6000 psi high pressure series (heavy duty), known as code 62 flanges as well

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SAE Socket Weld Elbow Flanges

SAE Socket Weld Elbow Flanges are one of the popular type of SAE socket wled flanges. The elbow is usually 90°. So they are know as SAE 90° Flanges as well.

Younglee SAE-socket-weld-elbow-flange

Materials:
  • Carbon steel SAE 90° Flanges: C45, C20, CQ235, or on requests.
  • Stainless steel SAE 90° Flanges: 304, 316, 316L, 316Ti or equivalent EN/DIN stainless steel grades 1.4301, 1.4401, 1.4404, 1.4571, used for connecting stainless steel hydraulic tubing.

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SAE BSPP threaded flanges

SAE BSPP threaded flanges are the SAE threaded flanges with BSPP type thread. As a sub variety, this product followed all the descriptions of SAE threaded flanges. To find information of materials, working pressure, surface treatments and size range, please refer to SAE threaded flanges.

SAE-BSPP-thread-flanges

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SAE Flange Clamps

Forged SAE flange clamps

SAE flange clamps, hydrauic sae flange clamps

Hydraulic SAE flange clamps are designed and manufactured according to standard ISO 6162-1, ISO 6162-2. This product is widely used in hydraulic systems as safe and leak free tube and pipe connectors.

Main series of SAE flange clamps:

  • 3000 PSI Standard Pressure Series (acc. to ISO 6162-1)
  • 6000 PSI High Pressure Series (acc. to ISO 6162-2)

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