Long Weld Neck Flange (LWN) – Forged Steel Nozzle Flange for High-Stress Connections, ASME Pattern Options, RF/RTJ Facing, Multiple Pressure Classes
Basic Info
| Product Type | Long Weld Neck Flange |
| Material Grade | Long Weld Neck Flange |
| Manufacturing Process | ASTM A105/A105N (CS); SS A182 F304/316; Duplex F51/F53; Alloy F11/F22 (per project) |
| Dimensions | Forged blank → extended hub machining → drilling → facing → NDT as required |
| Basis Weight | Custom LWN dimensions (hub length/thickness per design); facing/drilling may follow ASME B16.5 patterns where specified |
| Mechanical Life | Varies significantly by hub length and class; as per drawing |
| Applicable Standards | Long-life in high-stress transitions; depends on fatigue, vibration, thermal cycling |
| Pressure Rating | ASME B16.5 drilling/facing patterns (when specified); project specs |
| Surface Type | Class per piping spec (commonly 150–2500); final rating depends on design/calculation |
| Heat treatment | RF / RTJ (common); FF if specified |
| Coating Protection | CS normalized; alloy Q&T if required; SS solution anneal |
| Application | Oil/paint/epoxy/HDG |
| Compatibility | Nozzle connections on vessels, high-stress piping transitions, offshore/process services |
| Certifications | Depends on selected material grade and media |
| EN 10204 3.1; optional third | party inspection; optional NDT dossier |
| Country of Manufacture | India |
Packaging & Delivery
| Product Weight | 1.00 Kg |
| Shipping Port | Jawaharlal Nehru Port |
About Us


Kisaan Die Tech is a forging and manufacturing company founded in 2005, in Ghaziabad, an industrial centre near New Delhi, India. Since its inception, Kisaan Die Tech has developed into a fully integrated manufacturing centre and opened a facility focused on precision machining and warehousing capabilities, in Ottawa, Canada. Kisaan Die Tech began forging flanges and has since expanded its product range to include non-standard and custom flanges, rings, couplings, gear blanks, power transmission shafts, tube sheets and custom parts forged and machined to client specifications. These products can be manufactured from carbon, alloy and stainless steels and can be heat treated and/or precision machined on-site in India. Our North American facility also offers precision machining and finishing services in addition to warehousing capabilities. As Kisaan Die Tech has grown, our focus has not changed: we continue to provide the highest-quality forged components with the most competitive pricing to clients around the world. As always, we remain committed to forging the way forward.
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Description
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| Profie Name | Nitin Chowdhury |
| Company Name | |
| Shop URL | https://www.kobray.com/marketplace/seller/profile/shop/Kisaan Die Tech |
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