Custom Drawing Flanges – Manufacturer, Exporter, Supplier & Stockist in India
Vandan Alloys manufactures, supplies and exports Custom Drawing Flanges produced according to customer drawings, technical specifications and project requirements. These flanges are suitable when standard ASME, EN, DIN, JIS or other catalogue dimensions do not match the required connection.
A customer drawing allows the required diameter, thickness, bore, bolt-hole pattern, PCD, facing, material and special machining details to be defined before manufacturing.
Based in Mumbai, India, Vandan Alloys supports custom flange requirements for oil & gas, refinery, petrochemical, chemical, power, engineering, process and industrial applications.
What Are Custom Drawing Flanges?
Custom Drawing Flanges are specially manufactured flanges made from an approved engineering drawing rather than being supplied only from standard catalogue dimensions.
The drawing becomes the primary manufacturing reference for requirements such as:
Outside Diameter
Flange Thickness
Bore Diameter
Bolt Circle / PCD
Number of Bolt Holes
Bolt Hole Diameter
Facing Details
Raised Face Dimensions
RTJ Groove Details
Special Machining
Tolerances
Material Grade
This type of manufacturing is especially useful for equipment connections, replacement parts and project-specific piping systems.
Types of Custom Flanges
Vandan Alloys can manufacture drawing-based versions of various flange types, including:
Custom Weld Neck Flanges
Custom Blind Flanges
Custom Slip-On Flanges
Custom Socket Weld Flanges
Custom Threaded Flanges
Custom Lap Joint Flanges
Custom Orifice Flanges
Custom RTJ Flanges
Long Weld Neck Flanges
Large Diameter Flanges
Equipment Flanges
Nozzle Flanges
Replacement Flanges
Special Forged Flanges
The final design is manufactured according to the approved drawing and applicable technical requirements.
Drawing Review Before Manufacturing
Before production, the supplied drawing can be reviewed for important manufacturing information.
We may verify:
Material + Size + Thickness + Bore + OD + PCD + Bolt Holes + Facing + Machining Details + Tolerances + Quantity
If any critical dimension or specification is unclear, clarification can be requested before manufacturing to reduce the possibility of mismatch with the mating component.
Materials & Grades
Custom drawing flanges can be manufactured in a broad selection of materials.
Carbon Steel
ASTM A105
ASTM A105N
Other specified carbon steel grades
Stainless Steel
304 / 304L
316 / 316L
321
347
310 / 310S
904L
Duplex & Super Duplex
UNS S31803
UNS S32205
UNS S32750
UNS S32760
Nickel & Special Alloys
Nickel 200 / 201
Monel 400 / K-500
Inconel 600 / 601 / 625 / 718
Incoloy 800 / 800H / 800HT / 825
Hastelloy C276 / C22
Titanium
Other materials according to specification
Material selection should be based on the actual operating environment and project requirements.
Custom Flange Dimensions
One of the main advantages of drawing-based manufacturing is the ability to produce dimensions that are not available as standard stock items.
Custom requirements may include:
Special Outside Diameter
Non-Standard Thickness
Special Bore
Reduced or Enlarged Bore
Custom PCD
Different Bolt-Hole Quantity
Special Bolt-Hole Diameter
Unequal Bolt-Hole Arrangement
Special Facing
Machined Recess
Special Groove
Equipment-Specific Dimensions
All dimensions should be taken from the approved drawing or verified technical information.
Custom RF, FF & RTJ Flanges
Vandan Alloys can manufacture drawing-based flange facings such as:
RF – Raised Face
FF – Flat Face
RTJ – Ring Type Joint
For RTJ flanges, the groove profile, dimensions and ring compatibility must correspond to the applicable standard or approved drawing.
Special machined faces can also be considered where defined by the customer specification.
Custom Bolt Hole & PCD
Custom bolt-hole arrangements are frequently required for equipment and replacement applications.
The drawing can specify:
Number of Holes + Hole Diameter + PCD + Hole Orientation + Angular Position
This information is important for proper alignment with the mating flange, valve, equipment nozzle or other connection.
Custom Bore Flanges
The internal bore can be manufactured according to the required pipe, tube, equipment or process connection.
Custom bore requirements may be applicable for:
Weld Neck Flanges
Equipment Connections
Pipe OD Matching
Special Wall Thickness
Existing Piping Replacement
Fabricated Assemblies
Special Transition Connections
For replacement applications, the actual mating component dimensions should be verified before production.
Custom Flanges for Equipment & Replacement
Drawing-based flanges are commonly required when an existing component needs replacement but the original flange is not readily available as a standard product.
Vandan Alloys can review:
Original Manufacturer Drawing
Customer Drawing
Old Flange Drawing
Dimensional Sketch
Existing Flange Photograph
Sample Measurements
Equipment Nozzle Details
Where sufficient dimensional information is available, a suitable manufacturing route can be established.
Specifications
Product: Custom Drawing Flanges
Manufacturing: Forged / Machined / As per approved drawing
Materials: Carbon Steel / Stainless Steel / Alloy Steel / Duplex / Super Duplex / Nickel Alloys / Titanium / Special Alloys
Size: Standard or Custom
Pressure Class: As specified
Facing: RF / FF / RTJ / Special
Bore: Standard or Custom
Bolt Holes: Standard or Drawing-Based
Standards: ASME / EN / DIN / JIS / BS / Customer Specification
Inspection: Dimensional / Visual / Material / PMI / TPI as required
Documentation: MTC / EN 10204 Type 3.1 and other documents as specified
Manufacturing Process
Depending on the material, size and design, the manufacturing route may include:
Material Selection → Forging / Suitable Manufacturing Route → Heat Treatment Where Specified → Rough Machining → CNC / Precision Machining → Facing & Bore Machining → Bolt-Hole Drilling → Special Machining → Inspection → Marking → Packing
The exact process is determined according to the material specification, flange design and production requirements.
Inspection & Quality Control
Because drawing-based flanges are manufactured for a specific application, dimensional inspection is an important part of the process.
Inspection can include:
Outside Diameter Inspection
Thickness Measurement
Bore Measurement
PCD Verification
Bolt-Hole Inspection
Facing Inspection
RTJ Groove Inspection Where Applicable
Visual Inspection
Material Verification
PMI Testing
Chemical & Mechanical Test Documentation
Third-Party Inspection
MTC / EN 10204 Type 3.1
Additional inspection requirements can be arranged according to the purchase order or project quality plan.
Custom Drawing Flanges Manufacturer & Exporter from India
Vandan Alloys is a Custom Drawing Flanges Manufacturer, Exporter, Supplier and Stockist in Mumbai, India, supporting customers with drawing-based and project-specific flange requirements.
We supply custom flanges for both new installations and replacement applications, including special dimensions and materials that may not be available as standard stock products.
Our export supply supports customers in the USA, Middle East, Europe, Asia and other international markets, subject to order and shipping requirements.
Why Choose Vandan Alloys?
Mumbai-based flange manufacturer and exporter
Drawing-based custom manufacturing
Wide range of material grades
Standard and non-standard dimensions
Custom bore and PCD options
RF, FF and RTJ configurations
Replacement flange support
Dimensional inspection
Material certification
TPI coordination where required
Export packing and shipment support
Get a Quote for Your Custom Drawing Flanges
Have a flange drawing or special dimensional requirement? Send your drawing to Vandan Alloys for technical review and quotation.
We can review requirements for material grade, flange type, dimensions, bore, PCD, bolt holes, facing, pressure class and special machining before confirming the manufacturing details.
To Get a Fast Quotation, Send:
Customer Drawing / PDF / CAD Drawing + Material Grade + Quantity + Required Delivery + Applicable Standard
If a complete drawing is not available, you can send a dimensional sketch, existing flange measurements or photographs for an initial review.
Email: info@vandanalloys.com
Call / WhatsApp: +91 98928 82255
Tel: +91 022 6610 9925
Vandan Alloys – Custom Flanges Manufactured to Your Drawing and Specification.
Contact Vandan Alloys
Vandan Alloys
Manufacturer of All Types of Flanges
3/5, Sakar Bhavan, Ground Floor, 6th Khetwadi lane, SVP Road ,Mumbai – 400 004. India
TEL+91 022 6610 9925Mobile no: 09892882255 GSTIN: 27AUMPS2067F1ZB
Email: info@vandanalloys.com ; Web: www.vandanalloys.com
Please visit Our Flanges Division:www.vandanalloys.net
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Custom Drawing Flanges Manufacturer & Exporter India | Vandan Alloys
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Vandan Alloys manufactures custom drawing flanges in carbon steel, stainless steel, duplex, nickel alloys and special grades. Drawing-based RF, FF, RTJ & special flanges.
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