Haihao Group Supplies ASME B16.5 SA105N LWN Flanges to Latvia
Haihao Group recently completed the production and shipment of a batch of ASME B16.5 SA105N long weld neck flanges for a customer in Latvia. The order included RF (Raised Face) LWN flanges in Class 600 and Class 1500 pressure ratings, manufactured according to customer drawings and technical requirements.
As a professional manufacturer and exporter of industrial flanges and piping products, Haihao Group continues to provide reliable flange solutions for customers in Europe, Southeast Asia, the Middle East, and global industrial markets.
Product Details of the Latvia Shipment
The supplied products included the following specifications:
|
Product |
Pressure Class |
Size |
Material |
Standard |
|
LWN Flange RF |
600# |
DN50, ID 50.8 mm, Length 315 mm |
SA105N |
ASME B16.5 / According to Drawing |
|
LWN Flange RF |
1500# |
DN50, ID 50.8 mm, Length 315 mm |
SA105N |
ASME B16.5 / According to Drawing |
All flanges were manufactured and inspected according to customer specifications before export shipment.
ASME B16.5 SA105N Long Weld Neck Flanges
The main products supplied in this order were ASME B16.5 SA105N long weld neck flanges for high-pressure piping systems, which are widely used in critical industrial applications requiring superior structural strength and reliable sealing performance.
Haihao Group ASME B16.5 SA105N long weld neck flanges production
What Is an LWN Flange?
LWN stands for Long Weld Neck flange. Compared with standard weld neck flanges, LWN flanges feature an extended neck design that improves stress distribution and provides enhanced reinforcement for pressure vessels and high-pressure pipelines.
These flanges are commonly used in:
- Pressure vessel nozzles
- High-pressure pipelines
- Offshore engineering
- Petrochemical plants
- Power generation systems
Haihao Group manufactures ASME B16.5 SA105N long weld neck flanges for high-pressure piping systems according to international standards and project-specific drawings.
Advantages of SA105N LWN Flanges
Excellent Mechanical Strength
SA105N forged carbon steel provides reliable structural performance for demanding industrial environments.
Improved Stress Distribution
The extended neck design reduces stress concentration around welded connections.
Suitable for High-Pressure Service
Class 600 and Class 1500 pressure ratings make these flanges suitable for severe operating conditions.
Reliable Sealing Performance
Raised Face (RF) flange design helps improve gasket sealing capability in pressure piping systems.
Haihao Group carefully controls production processes to ensure stable quality for every ASME B16.5 SA105N long weld neck flange.
SA105N Forged Carbon Steel Material
The supplied LWN flanges were manufactured from SA105N forged carbon steel.
Features of SA105N Material
Good Weldability
Suitable for field welding and fabrication applications.
Excellent Toughness
Provides stable performance under pressure and temperature variations.
Reliable Pressure Resistance
Widely used for forged piping components in industrial systems.
Cost-Effective Industrial Material
SA105N offers excellent balance between performance and manufacturing efficiency.
Haihao Group can also supply forged flanges in:
- ASTM A350 LF2
- ASTM A182 F304/F316
- Duplex stainless steel
- Alloy steel materials
ASME B16.5 Standard for Industrial Flanges
The flanges supplied for the Latvia project were manufactured according to ASME B16.5, one of the world’s most widely used flange standards.
ASME B16.5 Covers
- Flange dimensions
- Pressure-temperature ratings
- Facing types
- Tolerances
- Material requirements
This standard ensures compatibility and reliability in industrial pipeline systems worldwide.
Applications of Long Weld Neck Flanges
The ASME B16.5 SA105N long weld neck flanges for high-pressure piping systems are widely used in critical industrial applications requiring high structural integrity.
Main Applications
- Pressure vessel systems
- Oil & gas facilities
- Petrochemical plants
- Offshore platforms
- Refinery piping systems
- Power generation equipment
- Industrial process pipelines
Their reinforced neck structure makes them especially suitable for high-pressure and cyclic loading conditions.
Customized Manufacturing According to Drawings
One important aspect of this Latvia order was manufacturing according to customer drawings.
Haihao Group Custom Manufacturing Services
We support:
- Custom dimensions
- Special flange lengths
- Non-standard bore sizes
- Various pressure classes
- Project-specific inspection requirements
Haihao Group has extensive experience producing customized forged flange products for international engineering projects.
Strict Quality Inspection Before Shipment
Haihao Group follows comprehensive quality inspection procedures during manufacturing and export preparation.
Inspection Procedures Included
- Raw material verification
- Dimensional inspection
- Bore size measurement
- Facing inspection
- Surface quality inspection
- Packaging verification
Every batch of ASME B16.5 SA105N long weld neck flanges is carefully inspected before shipment.
Why Customers Worldwide Choose Haihao Group
Haihao Group continues to support global industrial projects with dependable products and professional export services.
Our Advantages
Rich International Export Experience
Products exported to:
- Latvia
- Europe
- Southeast Asia
- Middle East
- South America
Complete Industrial Product Supply
Haihao Group also supplies:
- Pipe fittings
- Forged fittings
- Steel pipes
- Gaskets
- Fasteners
Strong Technical Manufacturing Capability
We support customized production according to:
- Drawings
- International standards
- Special project requirements
Contact Haihao Group for LWN Flange Solutions
If you are searching for a reliable supplier of ASME B16.5 SA105N long weld neck flanges for high-pressure piping systems, Haihao Group can provide stable quality, competitive pricing, and dependable delivery worldwide.
Welcome to contact our technical sales team for quotations and engineering support.
FAQ
What is an LWN flange?
An LWN flange, or Long Weld Neck flange, is a forged flange with an extended neck design used in high-pressure and critical piping systems.
What is SA105N material?
SA105N is a normalized forged carbon steel material widely used for flanges and forged piping components.
What is the difference between Class 600 and Class 1500 flanges?
Class 1500 flanges are designed for much higher pressure applications compared with Class 600 flanges.
Why are LWN flanges used in pressure vessels?
The long neck structure improves stress distribution and reinforcement around nozzle connections, making them ideal for pressure vessel applications.
Can Haihao Group manufacture custom LWN flanges?
Yes. Haihao Group can produce customized LWN flanges according to drawings, dimensions, pressure classes, and project specifications.