Nascent Fittings Inc.·Stainless Steel
Stainless Steel SPECTACLE BLIND 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
- Stainless Steel
- Grades
- F304, F304H, F304L +
- Corrosion
- Excellent
About
Stainless Steel Flanges
Product overview combined with Stainless Steel 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 market leader in India as an Exporter, Manufacturer of Spectacle Blind Flanges, selling these flanges at competitive prices. Spectacle Blind Flanges are widely used in special circumstances with their main advantage being that they can be attached to the pipe without welding. our range of Spectacle Blind flanges can also manufactured as per the customer’s requirement, they are long-windedly used in specific situations due to their primary advantage of being able to be connected to the pipe without welding. In normal operation, the open end forms a seal between the two flanges, allowing for a constant flow of fluid across the pipe work. Meanwhile, our Spectacle Blind Flanges can be customized in terms of thickness, size, and specification to meet our clients’ specific requirements. In normal conditions, spectacle blinds are installed in the open position and do not interrupt the flow of the fluid conveyed by the pipeline
Typical applications
- Oil & Gas
- Petrochemical
- Chemical Processing
- Power Generation
- Pharmaceutical
- Food Processing
Configurations
Stainless Steel Flanges types
Open a type for drawings-aligned specifications.
Stainless Steel BLIND FLANGE
Stainless Steel LAPPED JOINT FLANGE
Stainless Steel LONG WELDNECK FLANGE
Stainless Steel NIPO / WELDO FLANGE
Stainless Steel ORIFICE FLANGE
Stainless Steel REDUCING FLANGE
Stainless Steel SCREWED / THREADED FLANGE
Stainless Steel SLIPON FLANGE
Stainless Steel SPACEER & PADDLE FLANGE
Stainless Steel SPECTACLE BLIND FLANGE
Stainless Steel WELDNECK FLANGE
Material scope
Stainless Steel specification
Dimensional and grade range typically supplied for SPECTACLE BLIND FLANGE in this material.
- Class
- 150# , 300#, 400#, 600#, 900#, 1500#, 2500#
- Grade
- Carbon Steel: ASTM A 105
- Grade
- Carbon Steel: DIN Standard – EN 10222-2/ EN 10222-4 – P235GH / P245GH / P265GH / P280GH / P295GH / P355N / P355NH / P285NH / P285QH
- Grade
- Stainless Steel: ASTM A 182 F -304/304H/304L/316/316H/316L/316Ti/309/310/317L/321/347/904L,XM19
- Grade
- Stainless Steel: DIN Standard EN 10222-5 1.4301/1.4307/1.4401/1.4404/1.4529/1.4571/1.4541/1.4410/1.4550/1.4335/1.4539
- Grade
- Copper Nickel: C70600(90:10), C71500(70:30), C71640
- Grade
- Hastelloy: UNS N10276, N06022, N10665, N06455,
- Grade
- SMO 254 Grade UNS S31254
- Grade
- Aluminium: ASTM B247, B361 – 2024, 6061, 6063, 6101, 7075.
- Grade
- Titanium: ASTM B381 – Grade 1, Grade 2, Grade 4, Grade 5, Grade 6, Grade 7, Grade 9, Grade 19, Grade 23
- Services
- Hot Dip Galvanizing, Sand Blasting, Special Threading.
- Dimensions
- ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
- Dimensions
- ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
- Dimensions
- ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
- Dimensions
- ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
- Dimensions
- ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
- Dimensions
- ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
- Dimensions
- ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
- Dimensions
- ANSI/ASME B 16.5, B16.47, B16.36, DIN Standard, JIS Standard, EN1902-1 Standard, UNI Standard, BS10 Standard, BS4504 Standard, API Standard etc.
Stainless Steel grades
Available grades for Flanges
Drawn from the Stainless Steel catalog and this product’s material specification.
F304
UNS S30400
General purpose austenitic stainless steel with excellent corrosion resistance and fabrication characteristics.
Best for · General corrosion resistance
F304L
UNS S30403
Low carbon version of 304 with improved weldability and reduced carbide precipitation.
Best for · Welded applications
F304H
UNS S30409
High carbon 304 grade developed for elevated temperature service.
Best for · High temperature applications
F309S
UNS S30908
Heat-resistant stainless steel with excellent oxidation resistance.
Best for · Oxidizing environments
F310S
UNS S31008
High chromium and nickel stainless steel with superior heat resistance.
Best for · Extreme temperatures
F310H
UNS S31009
High carbon 310 grade for elevated temperature applications.
Best for · Creep resistance
F316
UNS S31600
Molybdenum-bearing stainless steel with superior corrosion resistance.
Best for · Marine and chloride environments
F316Ti
UNS S31635
Titanium stabilized 316 stainless steel with enhanced heat resistance.
Best for · High temperature corrosion resistance
F316H
UNS S31609
High carbon version of 316 for elevated temperature service.
Best for · High temperature pressure service
F316L
UNS S31603
Low carbon version of 316 with excellent weldability.
Best for · Corrosive welded systems
F317
UNS S31700
Higher molybdenum stainless steel with enhanced corrosion resistance.
Best for · Aggressive chemical environments
F317L
UNS S31703
Low carbon version of 317 with superior pitting resistance.
Best for · Chemical and pharmaceutical service
F321
UNS S32100
Titanium stabilized stainless steel resistant to intergranular corrosion.
Best for · Elevated temperature applications
F321H
UNS S32109
High carbon 321 stainless steel with enhanced creep strength.
Best for · High temperature service
F347
UNS S34700
Niobium stabilized stainless steel with excellent high temperature performance.
Best for · Intergranular corrosion resistance
F347H
UNS S34709
High carbon version of 347 for elevated temperature applications.
Best for · High temperature pressure service
904L
UNS N08904
Super austenitic stainless steel with exceptional resistance to acids and chlorides.
Best for · Highly aggressive chemical environments
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
Hastelloy
Hastelloy C-276 · Hastelloy C-22
View
Material
Titanium
Grade 1 · Grade 2
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
11ASTM 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
ASME SA182
ASMEASME equivalent of ASTM A182 for forged stainless and alloy components.
- Scope
- Boiler and pressure vessel code adoption of ASTM A182 material requirements.
- Related
- ASTM A182
Certificates
5EN 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.
NACE MR0175
Materials for use in H₂S-containing environments in oil and gas production.
- Type
- Service / sour-service requirement
- Scope
- Limits hardness, microstructure and material selection for sulfide stress cracking resistance.
- Applies To
- Carbon, alloy and CRA piping products ordered for sour service
- Benefit
- Supports upstream oil & gas projects specifying sour-service compliance.
ISO 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
IBR
Indian Boiler Regulations approval for boiler-quality piping materials and components.
- Type
- Regulatory approval
- Scope
- Materials and components intended for use under Indian boiler installations.
- Benefit
- Required for many power and process projects under IBR jurisdiction in India.
Manufacturing
Crafted with care
Workshop and production views for Stainless Steel SPECTACLE BLIND 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 Stainless Steel SPECTACLE BLIND FLANGE?
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