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Lap Joint Flange

Short Description:

Our factory manufactured lap joint flanges come with a commitment to quality and consistency.

From original design to distribution, our engineers continuously meet customer needs through global quality standards.

When sourcing raw materials to manufacture lap joint flanges, our primary responsibility is to ensure that all our LJ Flanges are of the same quality and consistency.

 


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Standard: ANSI B16.9, ANSI B16.28, MSS-SP-43, GB/T12459-2017,ASME B16.9,SH3408,SH3409-96,SH3410-96,HG/T21635,DL/T 695,SY/T 0510,DIN 2615, EN10253-1, EN10253-2, Customized, etc
Size: 1/2〞(DN15to 60(DN1500)
Type: Equal and dissimilar diameters
Material: CS A105/SA105N,SS 304/3034L,316/316L
ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
Manufacturing process Moulded/Cold extrusion/Heat treatment
Pressure: CLASS 2000lB, 3000lB, 6000LB, 9000LB 15Mpa-64Mpa
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flange producing

USE &APPLICATION

  • Commonly used in the following industries:
  • architecture
  • bridge
  • Petrochemical industry
  • shipbuilding
  • project
  • Offshore and onshore services
  • Power generation industry
  • Food processing industry
  • oil and gas industr
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forged socket weld flange

Package

  • Products are packaged to ensure that there is no damage during transit.
  • In case of exports, standard export packaging is done in wooden cases.
  • All pipes are marked with Grade, Lot No, Size, Degree and our trade mark.
  • On special requests we can also, make custom marking on our products.
  • Wooden Boxes
  • Wooden Pallets
  • Shrink-Wrapped
  • Carton Boxes

Testing

  •  Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report
  •  Positive Material Identification - PMI Testing
  • Chemical Analysis - Spectro Analysis
  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Micro Test
  • Macro Test
  • Hardness Test
  • Pitting Resistance Test
  • Intergranular Corrosion (IGC) Test
  • Flaring Test
  • Flattening Test
  • Hydrostatic Test
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
  • Radiography Test
  • Dye Penetrant Test (DP Test)
Ansi cast steel globe valve

Certification

All materials are strictly inspected at every stage of the production process from procurement to product shipment. Visually inspect them for compliance with ASTM, ASME, MSS, DIN, EN and JIS codes and standards. Support officially certified inspection agencies to witness product material reporting, dimensional and quality compliance. Factory inspections are also supported.

copper reducer

Product Description

FLANGE4

The biggest limitation to lap joint flange (LJ flange) usage is pressure ratings. 
While many Lap Joint flanges will accommodate greater pressure levels than Slip-On flanges, they’re still not suited for high-pressure applications. 
With the limitations out of the way, both designs offer three major benefits depending on the industry in which you’re involved.
The first is the ability to use different materials for the Backing flange than the Stub End or Angle Ring. 
This means you can match the piping materials as required where components touch piped materials while using more affordable -- or otherwise desirable -- materials in the outer components which do not interact with piped materials.
The second is the ability to realign and rotate the flange freely to ensure proper connection and speed up maintenance processes in systems that require frequent maintenance. 
The ability to utilize flanges that do not require filet welds on the plates can also decrease installation times and provide further upfront cost savings.
Finally, in high-corrosion or high-erosion processes, Lap Joint flanges allow you to salvage the flange for re-use while replacing Stub Ends or Angle Rings as required for safe, cost-effective operation.

As a leading provider of stainless steel piping and components across China, we have more than 2 decades of experience serving industries of all kinds of lange, such as  threaded flange, carbon steel flange, plate flange, staineless steel flange, weld neck flange, Galvanized Pipe Flange, forged socket weld flange, square flange, anticorrosion flange, etc.  Our expert sales analysts are available today to help you choose the ideal lap joint flanges or rolled angle rings for your needs. Contact us today to learn more about our selection of high-quality stainless steel products.

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