BS 4504 Stainless Carbon Steel Weld neck flange

Product Introduction

Size

3/8″-80″ DN10-DN2000

Pressure

PN2.5-PN40

Material

Carbon Steel: A105 Q235B S235JR

Stainless Steel: SS304 316 321

Surface

BS 4504 is a part of the British Standard, which includes some standard specifications for flanges. Welding neck flanges are a common type in the BS 4504 standard.

Standard:
The BS 4504 standard specifies the size, material, and performance requirements for neck welded flanges to ensure their reliability and interchangeability in different applications.

Usage:
Welded neck flanges are typically used to connect a part of a piping system, allowing for easy disassembly and maintenance of the system. The design feature of this flange is that it has an extended neck that can be connected to the pipeline through butt welding.

Connection method:
The neck welded flange is connected to the pipeline through butt welding. The diameter and wall thickness of the neck allow for additional strength and pressure resistance during the welding process.

Marks and certifications:
Neck welded flanges that comply with BS 4504 standards should usually be labeled with manufacturer, material, and other information, and may require specific quality certification standards to ensure compliance with relevant regulations.

Advantages:

1. Strength and pressure resistance:

The design of the neck welded flange gives it good strength and pressure resistance at the connection point, especially under high temperature and high pressure conditions.

2. Suitable for high-temperature environments:

Due to its design characteristics, neck welded flanges are usually suitable for high-temperature environments because welding the neck can provide additional strength and stability.

3. Easy to install and maintain:

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

4. Good interchangeability:

Neck welded flanges that comply with BS 4504 standard usually have good interchangeability, which means they can be replaced with other flanges that comply with the same standard.

Disadvantages:

1. High cost:

Due to its design and manufacturing requirements, the manufacturing cost of neck welded flanges is usually higher. This may make it relatively expensive, especially for low-pressure, low-temperature, or general purpose applications.

2. Heavy weight:

The design of neck welded flanges is usually heavy, which may become a disadvantage in some applications, especially in situations where lightweight is required.

3. High welding requirements:

Due to the use of butt welding connection, high-quality welding processes and techniques are required. If welding is not done properly, it may lead to weak points in the connection points, thereby 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.

1.Shrink bag–> 2.Small Box–> 3.Carton–> 4.Strong Plywood Case

One of our storage

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Packing & Shipment

1.Professional manufactory.
2.Trial orders are acceptable.
3.Flexible and convenient logistic service.
4.Competitive price.
5.100% testing,ensuring the mechanical properties
6.Professional testing.

1.We can guarantee the best material according to related quotation.
2.Testing is performed on each fitting before delivery.
3.All packages are adapt for shipment .
4. Material chemical composition is conformed with international standard and environment standard.

A) How can I get more details about your products?
You can send an email to our email address. We will provide catalogue and pictures of our products for your reference.We can also supply pipe fittings, bolt and nut, gaskets etc. We aim to be your piping system solution provider. 

B) How can I get some samples?   
If you need, we will offer you samples for free, but new customers are expected to pay express charge. 

C) Do you provide customized parts? 
Yes, you can give us drawings and we will manufacture accordingly. 

D) To which country have you supplied your products?
We have supplied to Thailand, China Taiwan, Vietnam, India, South Africa, Sudan, Peru , Brazil, Trinidad and Tobago, Kuwait, Qatar, Sri Lanka, Pakistan, Romania, France, Spain, Germany, Belgium, Ukraine etc. (Figures here only include our customers in latest 5 years.). 

E) I can’t see the goods or touch the goods, how can I deal with the risk involved?  
Our quality management system conforms to the requirement of ISO 9001:2015 verified by DNV. We are absolutely worth your trust. We can accept trial order to enhance mutual trust.