Why Global Buyers Choose Ganpat Industrial For AISI 4130 Flanges?
Forged In-House
UNS G41300 heats forged, machined and tested under one roof
Heat-Number Traceable
Every flange linked back to its MTC 3.1 and cast heat
Aerospace & API Duty
Normalized or Q&T condition supplied to drawing
Full Inspection Before Dispatch
PMI • UT • hydro • dimensional, every lot
Quote In 24 Hours
Ready stock on Class 150-900 standard sizes
AISI 4130 Flanges Highlights
- 1Grade: UNS G41300, AISI/SAE 4130 Chromoly Steel
- 2Size Range: NPS ½” to 24″ per ASME B16.5, above 24″ per ASME B16.47
- 3Pressure Class: 150# to 2500#
- 4Standards: ASME B16.5, B16.47, B16.48
- 5Facing: Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF)
- 6Condition: Normalized & Tempered, Quenched & Tempered
Or call our Mumbai office: +91 22 6743 7134 • Same-week dispatch on ready stock sizes
Ganpat Industrial forges AISI 4130 Chromoly Steel Flanges in-house. We supply tested and documented flanges across India and Middle East. Our AISI 4130 Pipe Flanges follow drawings, heat-treatment, and facing requirements. We manufacture UNS G41300 forgings for demanding industrial applications. We also stock UNS G41300 Slip On Flanges for quick delivery.
Mumbai · AISI 4130 Flanges Manufacturer In India
Precision Forged for Strength and Reliability.
Ganpat Industrial supplies AISI 4130 Flanges in multiple types and sizes. Serving oil & gas, aerospace, petrochemical and engineering industries across India and Middle East.
- ✓ASTM A29 / A322 Compliant
- ✓Quenched & Tempered
- ✓Material Traceability
- ✓Global Export Supply
Discover UNS G41300 Blind Flanges Manufacturer in India in RTJ Facing With High Tensile Strength
AISI 4130 Flanges Specification
Get AISI 4130 Flanges Supplier In India offering complete details on every enquiry.
Werkstoff 1.7218 Industrial Flanges Material
- UNS G41300
- AISI / SAE 4130
- ASTM A29
- DIN 1.7218 / 25CrMo4
UNS G41300 Weld Neck Flanges Size Range
- NPS ½” – 24″ (B16.5)
- NPS 26″ – 60″ (B16.47)
- SCH 10 to SCH XXS bore
- Custom drawing sizes
SA 182 Gr Pipe Flange Testing
- PMI Testing
- Ultrasonic Test (UT)
- Hydrostatic Test
- Third-Party Inspection
Alloy Steel AISI 4130 WNRF Flange Finish
- Black / Mill Finish
- Shot Blasted
- Anti-Rust Oil Coated
- Phosphate Coated On Request
DIN 1.7218 Plate Flanges Documentation
- Mill Test Certificate 3.1
- NABL Lab Report
- Packing List
- Certificate Of Origin
Chromoly 4130 Blind Flange Origin
- Indian Origin
- European Origin
- Japanese Origin
- Heat-Number Traceable
Dimensions of SAE 4130 Weldo Flange
Flange dimensions remain the same regardless of material grade.
| NPS | Flange O.D. | No. Of Bolts | Bolt Dia. | Bolt Circle |
|---|---|---|---|---|
| ½” | 3-1/2 | 4 | 1/2 | 2-3/8 |
| 1″ | 4-1/4 | 4 | 1/2 | 3-1/8 |
| 1-1/2″ | 5 | 4 | 1/2 | 3-7/8 |
| 2″ | 6 | 4 | 5/8 | 4-3/4 |
| 3″ | 7-1/2 | 4 | 5/8 | 6 |
| 4″ | 9 | 8 | 5/8 | 7-1/2 |
| 6″ | 11 | 8 | 3/4 | 9-1/2 |
| 8″ | 13-1/2 | 8 | 3/4 | 11-3/4 |
| 10″ | 16 | 12 | 7/8 | 14-1/4 |
| 12″ | 19 | 12 | 7/8 | 17 |
| 16″ | 23-1/2 | 16 | 1 | 21-1/4 |
| 20″ | 27-1/2 | 20 | 1-1/8 | 25 |
| 24″ | 32 | 20 | 1-1/4 | 29-1/2 |
Advantages of Werkstoff 1.7218 Industrial Flanges
High Strength-To-Weight Ratio
Excellent Weldability
Good Machinability
Corrosion Resistant
Wide Heat-Treatment Response
Good Impact Toughness
Stable Up To 315°C Service
Lighter Than Stainless Flange
Flange Face Types of UNS G41300 Slip On Flanges
Raised Face (RF)
Standard raised sealing face for general pressure applications
Ring Type Joint (RTJ)
Metal ring sealing face for high-pressure and high-temperature service
Flat Face (FF)
Flat sealing surface commonly used for low-pressure applications
Male & Female (M&F)
Matching male and female faces provide controlled gasket positioning
Tongue & Groove (T&G)
Interlocking faces designed for accurate gasket alignment
Weld Neck RF
Raised-face weld neck configuration for demanding piping systems
Monthly Delivery of AISI 4130 Reducing Flanges to Below Countries
| Export to | Continent | Shipping time |
|---|---|---|
 Kenya |
Africa | 19 Days |
 USA |
North America | 40-60 Days |
 Oman |
Asia | 5 Days |
 UAE |
Asia | 5 Days |
Sourcing AISI 4130 Pipe Flange with MTC 3.1?Share size, class & facing – Get factory price with MTC 3.1 in 24 hours.
Mechanical Properties of Alloy Steel AISI 4130 Loose Flange
Tensile Strength
670 MPa Min
Normalized 870°C
Yield Strength
435 MPa Min
0.2% Proof Stress
Hardness
≤ 207 HB
Converted From HV
Elongation
25% Min
In 50 mm Gauge
Chemical Composition of Chromoly 4130 High Hub Blind Flanges
CarbonC
0.28–0.33%
ChromiumCr
0.80–1.10%
ManganeseMn
0.40–0.60%
MolybdenumMo
0.15–0.25%
SiliconSi
0.15–0.35%
PhosphorusP
≤ 0.035%
SulphurS
≤ 0.040%
IronFe
Balance
ASTM A182 UNS G41300 Long Weld Neck Flanges Material Equivalent
American Standard
- UNS G41300
- AISI / SAE 4130
- ASTM A29 Chemistry
European Standard
- Werkstoff 1.7218
- EN 25CrMo4
- DIN 1.7218
Japanese Standard
- JIS SCM430
- JIS G4105
- SCM 2 (Round Bar Feed Stock)
British Standard
- BS 970 708A25
- BS 970 CDS110
French Standard (AFNOR)
- 25 CD 4
Sizing A Wellhead or Manifold Assembly?Send your class, size and facing – Get engineered flange price same day.
Common Types of AISI 4130 Flanges
UNS G41300 Weld Neck Flanges
B16.5
SAE 4130 Slip On Flange
B16.5
Chromoly 4130 Blind Flange
RTJ / RF
AISI 4130 Grade Socket Weld Flanges
Class 150-1500
Alloy Steel AISI 4130 Threaded Flange
Screwed
ASTM A182 UNS G41300 Long Weld Neck Flanges
LWN
AISI 4130 Reducing Flanges
Eccentric / Concentric
AISI 4130 Orifice Flanges
Line Isolation
Bolt Chart of Chromoly 4130 Blind Flange
| NPS | Bolt Dia. (In) | No. Of Bolts |
|---|---|---|
| ½” – 1-1/2″ | 1/2 | 4 |
| 2″ – 3″ | 5/8 | 4–8 |
| 4″ | 5/8 | 8 |
| 6″ – 8″ | 3/4 | 8 |
| 10″ – 12″ | 7/8 | 12 |
| 16″ | 1 | 16 |
| 20″ – 24″ | 1-1/8 – 1-1/4 | 20 |
Heat Treatment Process of SA 182 Gr Pipe Flange
Hot Forging
UNS G41300 billet forged to rough flange shape
Normalizing 870–900°C
Refines grain, relieves forging stress
Hardening 845–885°C
Oil or water quench for Q&T grade orders only
Tempering 600–680°C
Restores ductility, sets final hardness range
Rough & Finish Machining
Facing, bolt-hole drilling, bore per drawing
Inspection & Marking
Hardness, PMI, dimensional check before dispatch
Buying In Bulk For An Oil & Gas Project?Send your BOQ – factory price, MTC 3.1, dispatch same week.
Buy SAE 4130 Slip On Flange in SCH 10 to SCH XXS With Heat Treated & Normalized Condition For Aerospace & Oil Gas Piping
Applications of DIN 1.7218 Plate Flanges
Find AISI 4130 Flanges Supplier in India providing diverse applications for engineering requirements.
Wellhead & Drilling Equipment
Aerospace Structural Joints
High-Pressure Gas Manifolds
Automotive & Motorsport Chassis
Defence & Ordnance Equipment
Pumps, Valves & Compressor Skids
Agricultural & Off-Highway Equipment
General Fabrication & Structural Steel
AISI 4130 Reducing Flanges Marking
Manufacturer Mark
GIC Trademark
Ganpat Industrial identification
Material Grade
4130 / G41300
Plus heat / lot number
Pressure Class
150#–2500#
Stamped on rim per order class
Facing Symbol
RF / RTJ / FF
Identifies facing without gasket removal
Testing Methods of Alloy Steel AISI 4130 WNRF Flange
PMI Testing
Positive Material Identification on every heat
Ultrasonic Test (UT)
Detects internal forging discontinuities
Radiographic Test (RT)
Weld and hub integrity on request
Charpy V-Notch Impact
Verifies low-temperature toughness
Hardness Test
Brinell / Rockwell check against grade limit
Dimensional & Visual
O.D., bore, bolt circle & facing checked per lot
Weekly Delivery of Alloy Steel AISI 4130 Threaded Flange to Below Countries
| Export to | Continent | Shipping Time |
|---|---|---|
 Spain |
Europe | 30 Days |
 Malaysia |
Asia | 10 Days |
 Germany |
Europe | 20 Days |
 Vietnam |
Asia | 10 Days |
Frequently Asked Questions
What is the SAE 4130 Weldo Flange price based on?
Price depends on size, class, facing, heat treatment and quantity.
Where do I find AISI 4130 Pipe Flange dimensions?
Dimensions follow ASME B16.5 or ASME B16.47 standards.
Can Chromoly 4130 High Hub Blind Flanges be welded?
Yes, proper preheating and qualified welding procedures are recommended.
What condition should I order for Alloy Steel AISI 4130 Threaded Flange?
Normalized suits general duty, while Q&T offers higher strength.
Explore Nearby Locations For the Quickest Delivery Options
| Houston | Kenya | Gabon | Morocco | Dubai | Tunisia |
|---|---|---|---|---|---|
| Mozambique | South Africa | Nigeria | Abu Dhabi | USA | Oman |
| California | Indiana | Texas | New South Wales | Algeria | Carolina |
| Zambia | Ethiopia | Egypt | Angola | Ghana | Tanzania |
| Al-khobar | Riyadh | Dammam | Saudi Arabia | UAE | Al Jubail |
6 Reasons to choose Ganpat Industrial Corporation
- Distributor of Heat Exchanger parts and Alloys for High Temperature applications.
- Stockholder and importer of Ferrous and non ferrous metals.
- Wide stock of prime quality austenitic and Ferritic Stainless Steel for Extreme pressure environment.
- Marine grade steel at lowest price in Mumbai.
- Compare Price per KG in India and China.
- Offer Resale price to local suppliers, traders and wholesalers in UAE, Saudi Arabia, Egypt, and USA