Nascent Fittings Inc.
LAPPED JOINT 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
Lap Joint Pipe Flanges are available in variety of material grades, sizes, and specifications to meet our clients’ requirements. Featuring a two-piece design, lap joint flanges require butt welding of the stub end to the pipe or fitting with the use of a backing flange to create the flanged connection. This design makes this style popular for use in systems with limited physical space or systems which require frequent dismantling and maintenance. There are several materials available for lap joint flanges, including Carbon Steel, Alloy Steel, Stainless Steel, Hastelloy, Inconel, Monel and duplex Steel. Lap Joint Flanges have all the same common dimensions as any other flange named on this page however it does not have a raised face. These flanges are nearly identical to a Slip On flange with the exception of a radius at the intersection of the flange face and the bore to accommodate the flanged portion of the Stub End. Their pressure-holding ability is little, if any, better than that of Slip On flanges and the fatigue life for the assembly is only one tenth that of Welding Neck flanges.
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
LAPPED JOINT FLANGE by material
Alloy Steel LAPPED JOINT FLANGE
Size · 1/2″ NB to 48″ NB
Duplex Steel LAPPED JOINT FLANGE
Size · 1/2″ NB to 48″ NB
Cupro Nickel LAPPED JOINT FLANGE
Grades · Cu-Ni 90/10 (C70600) · Cu-Ni 70/30 (C71500)
Monel LAPPED JOINT FLANGE
Standards · ASTM B564
Nickel Alloy LAPPED JOINT FLANGE
Size · 1/2″ NB to 48″ NB
Hastelloy LAPPED JOINT FLANGE
Standards · ASTM B564
Titanium LAPPED JOINT FLANGE
Grades · Grade 1 · Grade 2 · Grade 7 · Grade 5 (Ti-6Al-4V)
Stainless Steel LAPPED JOINT FLANGE
Size · 1/2″ NB to 48″ NB
Carbon Steel LAPPED JOINT FLANGE
Size · 1/2″ NB to 48″ NB
Low Temperature Carbon Steel LAPPED JOINT FLANGE
Size · 1/2″ NB to 48″ NB
Copper LAPPED JOINT FLANGE
Grades · C11000 (ETP) · C12200 (DHP)
Copper Alloy LAPPED JOINT 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 LAPPED JOINT 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 LAPPED JOINT FLANGE?
Share sizes, material grade and quantity — manufacturing options and delivery timelines follow.
