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JIS B2220 Stainless Steel Pipe Flanges SUS F304 20K SOPRF Fitting
Stainless steel pipe flanges are components used in piping systems to connect pipes, valves, pumps, and other equipment. They provide a means for easy assembly, disassembly, and maintenance of the system.
Stainless steel pipe flanges are typically made from austenitic stainless steel grades such as 304/304L, 316/316L, 317/317L, 321/321H, and others. These stainless steel grades offer excellent corrosion resistance, durability, and strength.
Threaded flanges have internal threads that match the external threads of the pipe. They are suitable for low-pressure and non-critical applications.
Material:Stainless Steel SUS304
SUS304 material is a Japanese JIS standard and the most commonly used stainless steel, containing 18% Cr and 8% Ni. It can maintain good strength and heat resistance in high temperature and low temperature environments, and also has good corrosion resistance, weldability, cold workability and mechanical properties in the mild atmosphere.
SUS304 Stainless Steel Chemical Composition
| Standard | Grade | C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr | Ni |
| JIS G4303 | SUS304 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 18-20 | 8-10.5 |
SUS304 Stainless Steel Mechanical Properties
| Standard | Grade | Dia.(d) (mm) | Yield Strength (N/mm2) | Tensile Strength (N/mm2) | Elongation (%) | Hardness (HB) | Hardness (HV) |
| JIS G4303 | SUS304 | d≤180 | ≥205 | ≥520 | 40 | ≤187 | ≤200 |
Face Type-RF Raised Face
The Raised Face flange is the most common type used in process plant applications, and is easily to identify. It is referred to as a raised face because the gasket surfaces are raised above the bolting circle face. This face type allows the use of a wide combination of gasket designs, including flat ring sheet types and metallic composites such as spiral wound and double jacketed types.
The purpose of a RF flange is to concentrate more pressure on a smaller gasket area and thereby increase the pressure containment capability of the joint. Diameter and height are defined by pressure class and diameter. Pressure rating of the flange determines the height of the raised face.
Product Information
| Product Name | SUS304 20K SOPRF Flange |
| Size Range | 3/8” to 36” |
| Pressure Class | 20K (20kg/cm2) |
| Standards | JISB2220 |
| Face Type | SOPRF |
| Materials | SUS304 |
| Origin | China |
| Application | Pumps, Valves, and vessels in manufacturing and food processing. Pipe connections in industrial waterworks. Heat exchangers and heating systems of all sizes. Mining support. Nuclear power systems |
JIS Flange 20K (20kg/cm2) Dimensions
