Stainless Steel Flange

304 stainless steel flange

A more versatile stainless steel

304 is a relatively versatile stainless steel, which is widely used in the manufacture of equipment and parts that require good comprehensive properties (corrosion resistance and formability).

304 stainless steel is a grade of stainless steel produced in accordance with ASTM standards. 304 is equivalent to 0Cr19Ni9 (0Cr18Ni9) stainless steel in China. 304 contains 19% chromium and 9% nickel. 304 is a widely used stainless steel and heat-resistant steel. It is used in food production equipment, Xitong chemical equipment, nuclear energy, etc.

304 stainless steel flanges are the same as other material flanges, and there are 13 common types:

1. Flat welding flange (flat panel flange) The pipe must be inserted into the flange welded in the inner ring of the flange.

2. Butt welding flange (English name: welding neck flange) with neck, smooth transition section, and pipe for butt welding flange.

3. Socket welding flange (English name: socket welding flange) is a flange with socket welding and socket welding connection with the pipe.

4. Threaded flange (English name: threaded flange or screwed flange) is a flange with threads and a threaded connection with the pipe.

5. Loose flange (English name: lapped joint flange or loose flange) is a flange used in combination with a flanging short joint or welding ring on the pipe.

6. Special flange Non-round flanges, such as diamond flanges, square flanges, etc.

7. The reducing flange (also known as the size flange) (English name: reducing flange) is connected with the standard flange, but the nominal diameter of the pipe is smaller than the flange of the nominal diameter of the standard flange.

8. The sealing surface of the full plane flange (English name: flat face flange) is the flange of the same plane as the whole flange face.

9. The sealing surface of the raised face flange (English name: raised face flange) is slightly higher than the flange of the entire flange face.

10. Concave and convex face flanges (English name: male and female face flanges) are a pair of flanges, and their sealing surfaces are concave and convex.

11. tongue and groove face flanges (English name: tongue and groove face flanges) have a pair of flanges with their sealing surfaces, one has a tenon, and the other has a groove that matches the tenon.

12. The sealing surface of the ring joint face flange (also known as ring joint face flanges) flange is a trapezoidal ring groove.

13. The stainless steel flange cover (also known as the blind flange) (English name: blank flange or blind flange) is connected with the pipe end flange to close the pipe and a round plate with bolt holes. In order to prevent rust and cracks on the surface of the stainless steel flange, the surface of the carbon steel flange is usually coated with electroplating layer (yellow zinc, white zinc, etc.), or brushed with anti-rust oil and sprayed with anti-rust paint.