Nascent Fittings Inc.
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.
- Standard
- ASME A182
About
About Flanges
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 provides weld neck flanges in the following materials: stainless steel, alloy steel, carbon and LTCS, copper & nickel alloys, Super Duplex, Nickel, Monel, Inconel, Hastelloy, Aluminium, etc. Like lap joint flanges, weld neck flanges require butt welding for installation. However, their integrity, performance in systems with multiple repeat bends, and the ability to use them in high-pressure and high-temperature systems make them a leading choice for process piping. A weld neck flange, also called a tapered hub flange or high-hub flange, is a kind of flange that can relocate stress to the pipes, ensuring a decrease in high-stress concentration at the bottom of the flange. There are two welding neck flange designs – the first type is used with wipes while the second, longer type cannot be used with pipes but with a process plant. The weld neck flange comprises a round fitting that extends beyond the rim of the circumference. These flanges, typically manufactured from forging, are actually welded to pipes.
Typical applications
- Industrial piping and process systems using Stainless Steel Flanges
- Project supply of Stainless Steel Flanges for oil & gas, power, chemical and general industry
Configurations
Flanges types
Open a type for drawings-aligned specifications.
Materials
WELDNECK FLANGE by material
Alloy Steel WELDNECK FLANGE
Size · 1/2″ NB to 48″ NB
Duplex Steel WELDNECK FLANGE
Size · 1/2″ NB to 48″ NB
Cupro Nickel WELDNECK FLANGE
Grades · Cu-Ni 90/10 (C70600) · Cu-Ni 70/30 (C71500)
Monel WELDNECK FLANGE
Standards · ASTM B564
Nickel Alloy WELDNECK FLANGE
Size · 1/2″ NB to 48″ NB
Hastelloy WELDNECK FLANGE
Standards · ASTM B564
Titanium WELDNECK FLANGE
Grades · Grade 1 · Grade 2 · Grade 7 · Grade 5 (Ti-6Al-4V)
Stainless Steel WELDNECK FLANGE
Size · 1/2″ NB to 48″ NB
Carbon Steel WELDNECK FLANGE
Size · 1/2″ NB to 48″ NB
Low Temperature Carbon Steel WELDNECK FLANGE
Size · 1/2″ NB to 48″ NB
Copper WELDNECK FLANGE
Grades · C11000 (ETP) · C12200 (DHP)
Copper Alloy WELDNECK FLANGE
Grades · UNS C70600 (Cu-Ni 90/10) · UNS C71500 (Cu-Ni 70/30) · UNS C71640
Compliance
Standards & certificates
Specifications and documentation typically referenced for this product line — details from our shared compliance catalog.
Standards
10ASTM 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
Manufacturing
Crafted with care
Workshop and production views for 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 WELDNECK FLANGE?
Share sizes, material grade and quantity — manufacturing options and delivery timelines follow.
