GOST-33259 Carbon Stainless Steel Plate Welding Flange

Product Introduction

Size

1/2"-24" DN15-DN1200

Pressure

PN16 PN25 PN40 PN63 PN100

Material

Carbon Steel: A105 Q235B S235JR

Stainless Steel: SS304 SS316 SS321

Surface

FF; RF;

The plate flat welding flange mentioned in GOST 33259 standard is a type of flange connection specific to Russian national standards. The following is a general introduction to the characteristics, advantages and disadvantages, and application scope of this type of flange:

Features:

1. Flat welding design: Plate type flat welding flange is a flat flange that is flush with the connection surface of pipelines or equipment, suitable for applications that require the flange surface to be as flat as possible.
2. Screw hole layout: The standard specifies the number, diameter, and layout of screw holes on flat welding flanges. These screw holes are used for installing and connecting flanges to other pipes or equipment.
3. Materials: According to GOST 33259 standard, plate type flat welding flanges can use different materials, including carbon steel, stainless steel, and alloy steel, to meet different environmental and engineering requirements.

Advantages and disadvantages:

Advantages:

1. Flat connection surface: Due to the flat welding design, the flange connection surface is very flat, which helps to ensure good sealing performance.

2. Suitable for general applications: Suitable for general pipeline connection needs, providing reliable connections and sealing.

Disadvantages:

1. Not suitable for high-temperature and high-pressure environments: The design of flat welded flanges may limit their application in high-temperature and high-pressure environments, as welded joints may not be as strong as butt welded flanges.

Application scope:

1. General industrial pipeline system: Plate flat welding flange is suitable for connecting general industrial pipeline systems, such as chemical, pharmaceutical, food processing and other fields.

2. Low temperature and low-pressure systems: Due to its structural characteristics, plate type flat welding flanges may be more suitable for low temperature and low-pressure systems.

3. Applications that require flat connection surfaces: When flange connection surfaces need to be as flat as possible to ensure good sealing performance, plate type flat welding flanges are a common choice.

Overall, the plate welding flange of GOST 33259 standard is suitable for general pipeline connection requirements, but specific engineering requirements and environmental conditions still need to be considered when selecting it