1. The production process of our long welding neck flange contains the sectioning, forging, solution treatment, fine machining, drilling, quality testing, etc. 2. The high quality neck part shows good mechanical stiffness and load capability. 3. Compared with the butt welding flange, this product has higher electrode consumption. 4. The installation of our product can be fairly easy 5. The customization service about the product is available, and the selling price will be fair.
| Nominal diameter | 3/8"~80" (DN10~DN2000) |
| Nominal pressure | CLASS150~CLASS2500 (US) PN6~PN420 (EU) |
| Production standard | GB/T9112-2000 GB/T9113.1-2000, GB/T9113.2-2000,GB/T9113.3-2000,GB/T9113.4-2000 GB/T9124-2000 GB/T13402-1992 HG/T20592-2009, HG/T20614-2009 HG/T20615-2009, HG/T20623-2009, HG/T20635-2009 ASME B16.5-2009,ASME B16.47-2006 API605-1988 MSS SP 44-2006 CSA Z245.12-05-2005 EN1092-1-2007, EN1759-1-2004 BS1560-3.1-1989, BS4504-3.1-1989 AFNOR NF E29-200-1-2007 ISO7005-1-1992 AS2129-2000 JIS B2220-2004. |
Structural Diagram
Structural Diagram
As a specialized LWN / long welding neck flange manufacturer and supplier in China, our company also provides TH / threaded pipe flange, SO / slip on flange, spectacle blind flange, and SW / socket weld flange, among others.
Related Names: Long Weld Neck Flange | Long WN Flange | LWN Flange | High Hub Flange