DIN 2632 2633 2634 2635 Stainless Carbon Steel Welded Neck Flange

Product Introduction

Size

DIN2632: NPS 1/2"-24" DN15-DN600

DIN2633: NPS 1/2"-24" DN15-DN600

DIN2634: NPS 8"-24" DN200-DN600

DIN2635: NPS 3/8"-20" DN10-DN500

Pressure 

PN10-PN25

Material

Carbon Steel: A105; Q235B S235JR

Stainless Steel:  SS304; SS316; SS321

Standard

DIN 2632、DIN2633、DIN2634、DIN2635

The DIN (German Industrial Standard) standard also includes specifications for neck welded flanges. The welded neck flange is manufactured according to DIN standards and is commonly referred to as DIN Weld Neck Flanges.

Pressure level:

The welding neck flanges in DIN standards are usually classified into different pressure levels to meet different working pressure requirements.

Connection method:

The neck welded flange is connected to the pipeline by butt welding. The design of the welded neck aims to provide additional strength and stability.

Surface treatment:

According to the requirements of DIN standards, neck welded flanges may require specific surface treatment to ensure compliance with relevant anti-corrosion, rust prevention, and corrosion resistance standards.

Quality standards:

DIN standards typically require neck welded flanges to meet specific quality standards to ensure their performance and reliability.

Marks and certifications

Neck welded flanges that comply with DIN standards should usually be labeled with manufacturer, material, and may require specific quality certification standards.

Advantages:
1. Strength and stability:

The design of the neck welded flange gives it good strength and stability at the connection point, especially under high temperature and high-pressure conditions. This helps to ensure the safe operation of the pipeline system.

2. Suitable for high temperature and high-pressure environments:

Due to its design characteristics, neck welded flanges are usually suitable for high temperature and high-pressure environments, making them a good choice for handling applications with more demanding conditions.

3. Good interchangeability:

Neck welded flanges that comply with DIN standards usually have good interchangeability, which means they can be replaced with other flanges that meet the same standards, improving the versatility of the components.

4. Suitable for multiple materials:

DIN standards allow the use of multiple materials for neck welded flanges, including carbon steel, stainless steel, alloy steel, etc., to meet the requirements of different applications.

5. Easy to install and maintain:

Welding flanges are usually easier to install and are also relatively easy to disassemble when maintenance or replacement of pipeline system components is required.

Disadvantages:

1. High cost:

The manufacturing cost of neck welded flanges is usually high, which may make them less economical in some low-cost or general-purpose applications.

2. Heavy weight:

The design of neck welded flanges is usually heavy, which may become a disadvantage in some applications that require lightweight.

3. High welding requirements:

Due to the use of butt welding for connection, high-quality welding processes and techniques are required. Improper welding may lead to weak points in the connection points, affecting the performance and safety of the system.

4. Not applicable to all applications:

The design of neck welded flanges may not be suitable for some special applications, such as those with strict requirements for weight, space, or cost.