How to Install Stainless Steel Flanges Correctly



Stainless steel flanges will not produce corrosion, pitting, rust, and are not easily worn. Stainless steel is one of the highest-strength metal materials for construction. Because stainless steel has good corrosion resistance, it can make structural components permanently maintain the integrity of engineering design. There are more and more types of stainless steel flanges in the production process, and the installation methods are different for different types of flanges. Next, I will introduce the correct installation sequence of stainless steel flanges.

1. The contaminated stainless steel pipe or stainless steel pipe fittings should be cleaned up before the stainless steel flange connection;

2. The pipes to which the stainless steel flange is connected are respectively fitted with a flange with a grooved ring;

3. Perform 90° flanging process on the two pipe ports. After flanging, the port surface should be polished vertically and flat without burrs, unevenness, or deformation. The nozzles must be rounded with special tools;

4. The finished short flanging tube can also be welded to the tube for use;

5. Insert the stainless steel sealing ring with O-shaped rubber sealing rings on both sides into the flange with grooved ring. The inner hole diameter of the stainless steel sealing ring is the same as the inner diameter of the pipe, and they are all concentric circles;

6. Connect the flange holes with bolts, and the bolt components need to be tightened symmetrically;

7. During the tightening process, push the flanging planes of the two pipes along the axial direction, and evenly compress the O-rings on both sides in a rigid contact and flexible sealing state to seal the joints.

Related References:
Stainless Steel Tube Fitting
Stainless Steel Pipe Fitting Connection Method
ISO Steel Pipe Tube and Fittings Standard and Specifications
DIN Steel Pipe Tube and Fittings Standard and Specification
BS Pipe Tube and Fitting Standard and Specification
JIS Pipe Tube Fitting Standard
ASTM Standard Specification for Structural Tubing Mechanical Tubing
ASTM A403 Wrought Austenitic Stainless Steel Piping Fittings
Hydrostatic Test Pressure Flange Fittings
ASTM Material Specification Fitting Flange Cast Forging Valve
ASTM Valve Standard Specification
DIN 1686 – Standard for Rough Casting General Tolerance
Material Comparison Table DIN 1691 1693 and DIN EN 1561
ISO Tolerance Table
ISO Tolerances For Fasteners
Tolerances to ISO 9445 Cold Rolled Narrow and Wide Strip
Tolerances to ISO 9444 ontinuously Rolled Hot Rolled Strip
ISO Steel Pipe Tube and Fittings Standard and Specifications
Tolerances to ISO 18286 hot rolled stainless steel quarto plate

Related Post

Contact US RFQ