American Standard Long Weld Neck Flange

Product Introduction

Dimensions:

From 1/2 inches to 10 inches.

Pressure rating:

From 150 pounds to 2500 pounds, the specific selection depends on the requirements of the project and the design conditions of the pipeline system.

Standard:

ASME B16.5; ASME B16.47 MSS SP-44

Material:

Carbon Steel:

Stainless Steel:

Alloy Steel:

Long weld neck flange, also known as LWN Flange, is a type of flange connection equipment commonly used in high-pressure and high-temperature pipeline systems.

Compared with traditional welded neck flanges, it has a significant feature that its neck length is relatively longer.

Applicable scope:

1. Due to the long neck of the long neck butt welding flange, it is mainly used in high-temperature and high-pressure working conditions, such as petrochemical, fertilizer, refining, natural gas transportation and other fields.
2. Especially suitable for situations that require additional strength and stability, such as pipeline systems at high temperatures.

Advantages:
1. Strength and stability:

Long neck butt welded flanges have better strength and stability due to their longer neck design, making them suitable for high pressure and high temperature conditions.

2. Welding performance:

The neck length makes welding easier, improving the firmness and reliability of the connection.

3. Wide applicability:

Suitable for various media and working conditions, providing greater flexibility.

Disadvantages:

1. Relatively high cost:

Due to its high design and manufacturing requirements, compared to other types of flanges, the cost of long neck butt welded flanges may be higher.

2. Space requirements:

Due to its longer neck, it may require more space and may not be suitable in some limited space situations.

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

One of our storage

Loading

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.