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Square Flanges

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Square flanges are used in hydraulic systems to  connect a pipe to component or a pipe to pipe connection. As the name implies, square flanges are squarely shaped. It makes in accordance to different standards based on various countries, square flanges come in different pressure rating in order to fulfill their purpose.

​With square flanges, you can ensure seamless flow of liquids through stainless and steel pipes or any other hydraulic systems. Square flanges come in different sizes from 1/4 inches to 6 inches. The common sizes for system installations are 1/2 to 2 inches. ​​
Size
  • 1/4" to  6"
Material
  • Steel SF440A
  • Stainless Steel SS316
Working Pressure
  • 210kg/cm²
  • ​280kg/cm²
  • 350kg/cm²
Connection Type
  • Socket Welding
  • Weld-in
Configuration
  • SHAB
  • SSAB
  • KAB
  • LSA
CATALOGUE :

Square Flanges

LSA Square Flanges


What are Square Flanges

1. How do you identify a square flanges
Square flange can be classified as two materials which are steel or stainless steel. It is made of SF440A steel or SS316 stainless steel. ​They are made to fit the standards of JIS B2291 as well as JIS F7806. This means that it works well with any Japanese Industrial Standard pipes in water systems, offshore, pipe projects and oil fields. ​Square flanges can withstand high pressure moving connected pipes, and there are three different pressure scale: 210kg/cm², 280kg/cm² and 350kg/cm².​ 
Square Flanges
Square Flanges
2. Why square flanges are used in piping?

The square flange is highly useful in multiple high pressure industries such as connections between pipes, as well as between pipes and other components that are necessary to get a full system working. It is widely used as a category of pipe fittings. Square flange end connection is welding type and it is called socket weld or weld-in. The pipe has to insert in to the recessed area of the flange, or socketed so as to have a plain end. Other connections can be customized upon request. 

The square flange can work in many different situations, but it is considered most useful when working in small diameter pipes. It is not recommended for larger diameter pipes, where there is a large weight load working within. However, square flange is not ideal to work well under high torque environment.​​
Square Flange Components
Square Flange Components
Square flanges can be applied in these following industries connecting hydraulic systems to ensure continuous flow of liquids. ​
  • Oil and gas that connects a pipeline
  • Petrochemical industrial plants
  • Water systems
  • Plumbing systems
  • Heat exchangers
3. What are different types of flanges? ​

​There are many different configurations, which are SHAB, SSAB, KAB and blind flange. 
  • SHAB is the most common used in the industry, it works in maximum pressure 210kg/cm² and it is used together with hexagon bolts.
  • SSAB works under pressure 210kg/cm² too. However, the body is smaller compared to SHAB and it is used together with Allan cap screws.
  • KAB with similar configuration to SHAB but having a main difference of higher pressure rating for either 280kg/cm² and 350kg/cm².
  • Square Blind Flanges are used to close the end flow of the system connection. 
​A complete set of square flange included 5 important parts. It is 1 piece of female side, label as A side, 1 piece of male side, label as B side, 4 pieces of hexagon or allen cap screws, 1 piece of NBR 70/90 oring and 4 pieces of hexagon nut (optional). Hexagon nuts are paired with hexagon bolts to use in tightening up both male and female sides.
350 KAB, 280 KAB, 210 SHAB, 210 SSAB
350 KAB, 280 KAB, 210 SHAB, 210 SSAB
4. How are flanges attached to pipes? ​

​Check out the 4 easy step to assemble square flanges down below:

​
Step 1: Make sure the surface is free from any contamination or scratch marks, then apply lubricant system fluid on each of the O-ring parts.
Picture
(Left) SSAB (Right) SHAB
Step 2: Place the flanges in the right position and fix the bolts through the bolt holes accordingly.​

Step 3
: Hand tighten the flanges with bolts and nuts.
​
Step 4: Use a wrench to tighten the bolts and nuts to optimum tightness.
With its unique design and distinct features, square flanges are immensely used in high pressure systems.

CATALOGUE :

Square Flanges

LSA Square Flanges


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  • About
    • Core Values
  • Brands
    • Stauff
    • RFS Hydraulics
    • MHA Zentgraf
    • Eaton
    • AF Hydro
    • Oleo Tecnica
    • Inteva
    • Both-well
    • KPL Industry
  • Products
    • Pipes and Tubes >
      • Stainless Steel Tubes
      • Stainless Steel Pipes
      • Hydraulic Steel Tubes
      • Copper Pipes
      • Copper Coils
      • Walform Tube
    • Pipe Clamps >
      • Stauff Clamps
      • Tubeclo Tube Clamps
      • Stauff Anti Corrosion Clamps
      • Tubeclo Rubber Insert Clamps
    • Flanges >
      • Hydraulic SAE Flanges
      • Square Flanges
    • High Pressure Valves >
      • High Pressure Ball Valves
      • SAE Flange Check Valves
      • Needle Valves
      • SAE Flange End Ball Valves
      • High Pressure Check Valves
      • ISO 6164 Ball Valves
    • High Pressure Fittings >
      • Compression Fittings
      • Ferrule Fittings
      • Forged Pipe Fittings
      • JIC Fittings
      • Quick Release Couplings
      • Pipe Adapter Fittings
    • Low Pressure Valves >
      • Ball Valves >
        • 1 Piece Ball Valve
        • 2 Piece Ball Valve
        • 3 Piece Ball Valve
        • L-Port Ball Valve
        • T-Port Ball Valve
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        • Brass Mini Ball Valve
        • Stainless Steel Mini Ball Valve
      • Flange End Ball Valves >
        • PN10/16 SS316 Flange End Ball Valve
        • ANSI 150# SS316 Flange End Ball Valve
        • ANSI 300# SS316 Flange End Ball Valve
        • JIS 10K SS316 Flange End Ball Valve
        • ANSI 150# Cast Steel Flange End Ball Valve
        • ANSI 300# Cast Steel Flange End Ball Valve
      • Swing Check Valves >
        • ANSI 150# SS316 Swing Check Valves
        • JIS 10K SS316 Swing Check Valves
        • ANSI 150# Cast Steel Swing Check Valve
        • Threaded End SS316 Swing Check Valves
        • Threaded End Brass Swing Check Valves
      • Single Plate Check Valves
      • Dual Plate Check Valves
      • Spring Check Valves
      • Y-Strainers >
        • ANSI 150# SS316 Y-strainer
        • JIS 10K SS316 Y-strainer
        • Threaded End SS316 Y-strainer
        • ANSI 150# Cast Steel Y-strainer
        • JIS 10K Cast Steel Y-strainer
      • Gate Valves >
        • ANSI SS316 150# Gate Valve
        • JIS 10K SS316 Gate Valve
        • Threaded End SS316 Gate Valve (200 PSI)
        • Threaded End SS316 Gate Valve (800 PSI)
        • ANSI 150# Cast Iron Gate Valve
        • JIS 10K Cast Iron Gate Valve
        • ANSI 150# Cast Steel Gate Valve
        • ANSI 150# Forged Steel Gate Valve
        • Threaded End Forged Steel Gate Valve
        • Welded End Forged Steel Gate Valve
      • Globe Valves >
        • ANSI 150# SS316 Globe Valve
        • JIS 10K SS316 Globe Valve
        • Threaded End SS316 Globe Valve (200 PSI)
        • Threaded End SS316 Globe Valve (800 PSI)
        • ANSI 150# Cast Iron Globe Valve
        • JIS 10K Cast Iron Globe Valve
        • ANSI 150# Cast Steel Globe Valve
        • ANSI 150# Forged Steel Globe Valve
        • Threaded End Forged Steel Globe Valve
        • Welded End Forged Steel Globe Valve
      • Butterfly Valves >
        • ANSI 150# Cast Iron Butterfly Valve
    • Low Pressure Fittings >
      • Class 150 Fittings
      • Camlock Fittings
      • Copper Fittings
    • Accessories >
      • Pressure Gauges
      • Stauff Test Couplings
      • Walform Machine
      • GS Retain Ring
      • Anti-bloc Fett
      • Stauff Tube Clean Systems
      • Dowty Seals
      • Stauff Level Gauge
      • Stauff Filler Breathers
  • Catalogues
    • Pipes and Tubes
    • Pipe Clamps
    • Flanges
    • High Pressure Valves
    • High Pressure Fittings
    • Low Pressure Valves
    • Low Pressure Fittings
    • Accessories
  • Contact
  • MYREWARDS
    • MYFAQ