Long Weld Neck Flange
Weld neck flange with extended neck for gradual stress transition, often used as nozzles for barrels or columns.
Description
The long weld neck flange features an extended neck for gradual stress transition from flange to pipe, reducing stress concentrations and fatigue failure risks. Additional clearance facilitates welding and inspection.
Variants include LWN Heavy Barrel (HB) and Equal LWN Barrel (E) types. Used in critical applications in oil and gas, chemical processing, and power generation.
Specifications
| Brand | Multi-Brand |
|---|---|
| Origin | China / India / Europe |
| Product Code | TF-FL-012 |
| Materials | A105, F304, F304L, F316, F316L, 316Ti, Copper |
| Size Range | DN15–DN2000 |
Standards & Codes
ANSI B16.5
DIN
JIS
Applications
- Oil & gas pipelines and refineries
- Petrochemical and chemical processing
- Power generation and industrial boilers
- Marine and offshore applications
- Water treatment and desalination
Documentation
Mill Test Certificates (EN 10204 3.1) available on request. Third-party inspection (TPI) can be arranged.
