Nascent Fittings Inc.·Hastelloy
Hastelloy LONG WELDNECK FLANGE
Weld neck, slip-on, blind, socket weld & lap joint flanges in SS, CS, alloy, duplex & nickel. ASME B16.5/B16.47, Class 150–2500, MTCs & export.
- Material
- Hastelloy
- Grades
- Hastelloy C-276, Hastelloy C-22, Hastelloy B-2 +
- Corrosion
- Exceptional
About
Hastelloy Flanges
Product overview combined with Hastelloy material context for project selection.
Our integrated facilities include facilities for cutting, forging, ring rolling and machines with CNC lathes, CNC drilling, high capacity forging press and mobile manipulator for making big diameter forged round bars. We also have an in-house heat treatment shop and well equipped laboratory facilities for ensuring the quality of our products.
Manufacturing note
Nascent fittings INC is a well-known Manufacture & Exporter of Long weld neck flanges in India and throughout the world. We provide cost-effective, dependable, and high-quality superior flanges to our customers. Long weld neck flange (LWN flange), is used for high pressure situations, integral hub weld neck flanges are used and for very high pressure cases Long Welding Neck flanges are preferred. In this case, the weld are far from the ring to avoid bending stresses and weld stress being combined The Long Weld neck Flange was designed to be used in place of a [Weld Neck Flange](https://www.coastalflange.com/pipe-flanges/weld-neck/) and piece of pipe for a bolt up connection to the vessel. This design reduced the stress on the neck and transferred it to the base where it connected to the vessel. The Long Weld Neck Flange is the most common of the self-reinforced nozzle designs. The two types are the heavy barrel with a long weld neck and the equal long weld neck barrel with a variety of shapes.
Typical applications
- Chemical Processing
- Petrochemical
- Pollution Control
- Oil & Gas
- Pharmaceutical
- Pulp & Paper
Configurations
Hastelloy Flanges types
Open a type for drawings-aligned specifications.
Hastelloy BLIND FLANGE
Hastelloy LAPPED JOINT FLANGE
Hastelloy LONG WELDNECK FLANGE
Hastelloy NIPO / WELDO FLANGE
Hastelloy ORIFICE FLANGE
Hastelloy REDUCING FLANGE
Hastelloy SCREWED / THREADED FLANGE
Hastelloy SLIPON FLANGE
Hastelloy SPACEER & PADDLE FLANGE
Hastelloy SPECTACLE BLIND FLANGE
Hastelloy WELDNECK FLANGE
Hastelloy grades
Available grades for Flanges
Drawn from the Hastelloy catalog and this product’s material specification.
Hastelloy C-276
UNS N10276
Nickel-molybdenum-chromium alloy for aggressive chemical service.
Best for · Severe corrosion and mixed oxidizing/reducing media
Hastelloy C-22
UNS N06022
Enhanced resistance to oxidizing aqueous media and localized corrosion.
Best for · Chemical processing and pollution control
Hastelloy B-2
UNS N10665
Nickel-molybdenum alloy designed for hydrochloric acid service.
Best for · Reducing acid environments
Hastelloy C-4 (N06455)
UNS N06455
Nickel-chromium-molybdenum alloy with excellent high-temperature stability and corrosion resistance.
Best for · High-temperature chemical service
Also available in
Other materials for this product
View Flanges in another material grade family.
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Material
Alloy Steel
F1 · F5
View
Material
Duplex Steel
F51
View
Material
Cupro Nickel
Cu-Ni 90/10 (C70600) · Cu-Ni 70/30 (C71500)
View
Material
Monel
Monel 400 · Monel K500
View
Material
Nickel Alloy
Nickel 200 · Nickel 201
View
Material
Titanium
Grade 1 · Grade 2
View
Material
Stainless Steel
F304 · F304H
View
Material
Carbon Steel
ASTM A234 WPB
View
Material
Low Temperature Carbon Steel
ASTM A420 WPL6
View
Material
Copper
C11000 (ETP) · C12200 (DHP)
View
Material
Copper Alloy
UNS C70600 (Cu-Ni 90/10) · UNS C71500 (Cu-Ni 70/30)
ViewCompliance
Standards & certificates
Specifications and documentation typically referenced for this product line — details from our shared compliance catalog.
Standards
12ASTM A182
ASTMForged or rolled alloy and stainless steel pipe flanges, fittings, valves and parts.
- Scope
- Forged and rolled stainless, alloy and duplex steel components for high-temperature service.
- Applies To
- Flanges, fittings, valves and pressure parts
- Typical Grades
- F304/L, F316/L, F11, F22, F91, F51/F60 and related
DIN Standard
DINGerman Institute for Standardization piping / material norms.
- Scope
- Collective reference for DIN dimensional and material standards used on export and EU projects.
- Applies To
- Flanges, fittings and materials when DIN designation is specified
ASME B16.5
ASMEPipe flanges and flanged fittings through NPS 24.
- Scope
- Pressure-temperature ratings, materials, dimensions, tolerances, marking and testing for pipe flanges and flanged fittings.
- Applies To
- Weld neck, slip-on, blind, socket weld, threaded, lap joint and reducing flanges
- Size Coverage
- NPS ½ through 24
- Class Range
- Class 150 to 2500
ASTM B564
ASTMNickel alloy forgings.
- Scope
- Forged nickel alloy flanges, fittings and similar parts.
- Applies To
- Forged flanges and fittings in nickel alloys
ASTM B861
ASTMTitanium and titanium alloy seamless pipe.
- Scope
- Seamless titanium pipe for corrosive and high-performance service.
- Applies To
- Titanium process piping
ASTM B171
ASTMCopper alloy plate and sheet for pressure vessels, condensers and heat exchangers.
- Scope
- Copper and copper-alloy plate for heat-transfer and pressure use.
- Applies To
- Tube sheets, plates and exchanger components
ASTM A234
ASTMPiping fittings of wrought carbon steel and alloy steel for moderate and high temperature service.
- Scope
- Seamless and welded wrought carbon and alloy steel fittings.
- Applies To
- Buttweld elbows, tees, reducers, caps and related forms
- Typical Grades
- WPB, WP5, WP9, WP11, WP22, WP91
ASTM A420
ASTMPiping fittings of wrought carbon steel and alloy steel for low-temperature service.
- Scope
- Wrought fittings suitable for low-temperature pressure piping.
- Applies To
- Buttweld fittings for cryogenic / LT service
- Typical Grades
- WPL6
EN
CENEuropean Norms for materials, flanges and fittings.
- Scope
- Umbrella reference for EN material and flange standards.
- Applies To
- EU-specified piping materials and PN flanges
IS 1239 Part II
BISMild steel tubes, tubulars and other wrought steel fittings — fittings.
- Scope
- Indian Standard covering wrought steel pipe fittings.
- Applies To
- MS / GI fittings commonly used in Indian utility piping
ASTM B366
ASTMFactory-made wrought nickel and nickel alloy fittings.
- Scope
- Wrought nickel-alloy buttweld and related fittings.
- Applies To
- Nickel, Monel, Inconel, Hastelloy and similar fittings
ASTM B574
ASTMLow-carbon nickel-chromium-molybdenum, low-carbon nickel-molybdenum-chromium, and low-carbon nickel-molybdenum-chromium-tantalum alloy rod.
- Scope
- Hastelloy and related Ni-Cr-Mo alloy bar products.
- Applies To
- Machined Hastelloy fittings and fasteners
Certificates
3ISO 9001
Quality Management System certification.
- Type
- Quality Management System
- Scope
- Demonstrates a documented QMS covering process control, traceability and continual improvement across manufacturing and supply.
- Benefit
- Assures buyers of consistent product quality and controlled production practices.
- Issued As
- Third-party accredited certificate
PED
Pressure Equipment Directive compliance for equipment placed on the EU market.
- Type
- Regulatory conformity
- Scope
- Design and conformity assessment requirements for pressure equipment and assemblies in the European Union.
- Benefit
- Enables supply of pressure-rated components into EU projects when PED conformity is required.
- Related
- CE marking / Notified Body routes as applicable
EN 10204 3.1
Mill test certificate with inspection by the manufacturer’s authorized inspection representative, independent of manufacturing.
- Type
- Inspection document (MTC)
- Scope
- States chemical analysis, mechanical test results and heat / lot identification for the supplied material.
- Documentation
- EN 10204 Type 3.1
- Benefit
- Provides traceable material evidence required on most industrial RFQs.
Manufacturing
Crafted with care
Workshop and production views for Hastelloy LONG WELDNECK FLANGE — the same craftsmanship photos from our plant archives, shown in webp.
4 photos
People also ask
Questions about Flanges
Nascent Fittings Inc. answers common buyer questions for this line.
Does Nascent Fittings Inc. manufacture Flanges?+
Yes. Nascent Fittings Inc. manufactures and supplies Flanges for industrial piping projects, with material grades and sizes aligned to project specifications.
Can Nascent Fittings Inc. export Flanges worldwide?+
Yes. We export Flanges globally with standard export packaging, material test certificates, and documentation support for international shipments.
What materials are available for Flanges?+
Flanges is available in carbon steel, alloy steel, stainless steel, duplex, nickel alloys, copper alloys, aluminium, titanium and other project-specific materials as required.
Need pricing for Hastelloy LONG WELDNECK FLANGE?
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