Shanxi Jianing Forging produces a full range of flanges, including plate-type flat welding, neck butt welding, stainless steel, carbon steel, wind turbine tower tubes, pressure vessel flanges, blind plates, figure-8 blind plates, and threaded special-shaped flanges, all customizable with multiple sealing surface types, and a full set of production qualifications for stable supply.
Still worried about insufficient weld strength and low installation efficiency during flange connections? Jianing Forging's necked flat-welded flanges use an integrated forging process, which enhances the stress resistance of the root weld and simplifies the welding process, making pipe connections more reliable and efficient.
Still worried about insufficient weld strength and low installation efficiency during flange connections? Jianing Forging's necked flat-welded flanges use an integrated forging process, which enhances the stress resistance of the root weld and simplifies the welding process, making pipe connections more reliable and efficient.
Necked flat welded flanges, also known as necked flat plate flanges, are standard connectors developed by Jianing Forging for medium and low pressure pipeline systems. Its neck design not only enhances the transition strength between the flange plate and the pipeline but also facilitates centered installation; Flat-welded joints comply with industry-standard processes, allowing for quick on-site welding and reducing construction costs. The products are compatible with pipelines for water, oil, gas, and other media, and are widely used in chemical, construction, fire protection, water supply and drainage, and other fields.
Forging with dense structure: Made from high-quality carbon steel or stainless steel billets and forged as a whole, internal defects eliminated, providing uniform mechanical properties
Neck tube transition, stress distribution: The necked structure keeps the weld seam away from the stress zone on the pan surface, effectively alleviating stress concentration and extending service life
Flat welding is convenient and efficiency is prioritized: the groove design is reasonable, and single-sided welding meets sealing requirements, making it suitable for batch installation operations
Standardized dimensions and strong interchangeability: Strictly produced according to HG/T 20592, GB/T 9119, and other standards, helping to ensure stable compatibility with standard piping accessories
This product is custom-produced, with prices calculated comprehensively based on material, nominal pressure, specifications, dimensions, and quantity. For specific quotes, please contact Jianing Forging Sales Engineer and provide the required parameters to obtain an accurate plan.
All flanges undergo visual inspection and dimensional retesting for each piece before leaving the factory
Material certificates and non-destructive testing reports can be provided
Fast delivery to standard specifications, customized with special requirements
The after-sales technical team supports installation guidance and issue response
| Parameter items | Content |
|---|---|
| Nominal stress | PN0.6～PN4.0 MPa |
| The official route is called the main route | DN10～DN600 |
| Sealing surface type | Projection (RF) / Full Plane (FF) / Concave-Convex Surface (MFM) |
| Applicable medium | Water, oil, gas, and mildly corrosive fluids |
