What Makes Ganpat Industrial Corporation Your Trusted Alloy Steel F22 Flanges Partner?
Since 1997
Nearly three decades stocking chrome-moly and alloy piping material in Mumbai
Manufacturer & Stockist
Forged flanges, bars and fasteners plus stocked pipes, plates and tubes
ISO 9001:2015
Quality management system certified and independently audited every year
PED & Petrofac Approved
Cleared for European pressure equipment projects and Petrofac vendor lists
Full Documentation
Mill test certificate, PMI report and heat treatment chart on every batch
Alloy Steel ASTM A182 F22 Flanges Functionalities
- 1Material Basis: 2.25Cr-1Mo Low Alloy Steel • UNS K21590
- 2Governing Standard: ASTM / ASME A182 F22 • Dimensions To ASME B16.5 & B16.47
- 3Size Range: ½ inch to 24 inch per B16.5, 26 inch to 60 inch per B16.47
- 4Class Range: Class 1 (Annealed) & Class 3 (Normalized & Tempered) — No Class 2 In F22
- 5Equivalents: DIN 10CrMo9-10 • Werkstoff 1.7380 • JIS SFVAF22B
- 6Forms Supplied: Weld Neck, Slip On, Blind, Socket Weld, Threaded & Lap Joint
Mumbai works desk • WhatsApp +91 85912 64209 • Same-day size-wise quote
Ganpat Industrial Corporation has served Indian and export piping buyers since 1997. As an Alloy Steel F22 Flanges Supplier in India, we forge various types. They feature 2.25Cr-1Mo chemistry for hydrogen and high-temperature steam duty. Refineries and boiler contractors specifically require this robust material chemistry. Every Chrome Moly F22 Pipe Flanges order follows ASME B16.5 dimensions. This standard covers flange sizes from ½ inch up to 24 inches. We machine, heat treat, and test each batch at our Mumbai facility. This rigorous processing covers both Class 1 and Class 3 material. Every despatch carries an EN 10204 3.1 mill test certificate. We regularly supply this range to Vadodara, Chennai, and Kandla. We also export to Dubai, Jebel Ali, Rotterdam, and Houston.
Mumbai · 2.25Cr-1Mo Chrome Moly Flange Stockist & Exporter
Forged Alloy Steel F22 Flanges Supplier in India with market-driven pricing.
Ganpat Industrial is a driven-pricing Alloy Steel F22 Flanges Supplier in India. We stock ASTM A182 Grade F22 Weld Neck, Slip On and Blind Flanges from ½ inch to 24 inch, Class 150# to 2500#.
- ✓ISO 9001:2015
- ✓ISO 14001:2015
- ✓OHSAS 18001:2007
- ✓PED Certified
- ✓Petrofac Approved
UNS Designation
K21590
Werkstoff 1.7380 / 10CrMo9-10
Nominal Alloying
2.25% Cr • 1% Mo
Chrome-moly resistance to hydrogen attack
Dimensional Standard
ASME B16.5
Also to ASME B16.47 for 26 inch and above
Pressure Class
150# – 2500#
Class 2500 limited to NPS 12 per B16.5
Explore ASTM A182 Grade F22 Blind Flanges Supplier in India With Class 150# to 2500# Rating
Specification Of Alloy Steel F22 Flanges
Every Alloy Steel F22 Flanges order is checked against this specification sheet.
Material Basis
- 2.25Cr-1Mo Low Alloy Steel
- UNS K21590
- Werkstoff Nr. 1.7380
- Normalized & Tempered (Class 3)
Governing Flange Standards
- ASTM A182 F22 / ASME SA182 F22
- ASME B16.5 (½ – 24 Inch)
- ASME B16.47 (26 – 60 Inch)
- BS 4504 / EN 1092-1 PN Series
Flange Size Range
- ½ Inch To 24 Inch (B16.5)
- 26 Inch To 60 Inch (B16.47)
- Class 150# To 2500#
- Class 2500 Capped At NPS 12
Flange Types Supplied
- Weld Neck, Slip On & Blind
- Socket Weld & Threaded
- Lap Joint & Spectacle Blind
- Orifice & Ring Type Joint
Delivery Condition
- Normalized & Tempered (Class 3)
- Tempering At 675°C Min
- Bevelled Or RF/RTJ Faced
- Shot Blasted, Painted On Request
Production Route
- Hot Forged Alloy Steel F22 Flanges
- Normalize + Temper Heat Treatment
- Rough & Finish Machined
- Bore, Face & RTJ Groove Machined
Testing Offered
- PMI Spectro Analysis
- Ultrasonic & Dye Penetrant
- Hardness & Tensile Test
- Third Party Inspection
Matching Products
- A335 P22 Seamless Pipe
- A234 WP22 Buttweld Fittings
- A217 WC9 Valve Castings
- F22 Fasteners & Round Bar
Packing
- Individually Capped Ends
- Wooden Crates, Fumigated For Export
- Heat Number & Class Tags
- VCI Wrap For Sea Freight
Types Of Alloy Steel F22 Flanges We Supply
A trusted Alloy Steel F22 Flanges Manufacturer in India stocks common petrochemical piping flanges.
Astm A182 Weld Neck Flange
WNRF
Alloy Steel F22 Slip On Flanges
SORF
ASTM A182 F22 Class 3 Blind Flange
BLRF
UNS K21590 Socket Weld Flange
SW
Alloy Steel Grade F22 Screwed Flanges
THD
ASME SA182 Alloy Steel F22 Lap Joint Flange
LJ + Stub
ANSI B16.5 Alloy Steel F22 Orifice Flange
Flow Metering
Chrome Moly F22 Ring Type Joint Flanges
RTJ
ANSI B16.5 Alloy Steel F22 Orifice Flange Size Chart
Outside diameter and bolt circle for common sizes, Class 150 and Class 300, per ASME B16.5.
| NPS | Class 150 OD | Class 150 BCD | Class 300 OD | Class 300 BCD |
|---|---|---|---|---|
| ½″ | 88.9 | 60.3 | 95.3 | 66.7 |
| 1″ | 108.0 | 79.4 | 123.8 | 88.9 |
| 2″ | 152.4 | 120.7 | 165.1 | 127.0 |
| 4″ | 228.6 | 190.5 | 254.0 | 200.0 |
| 6″ | 279.4 | 241.3 | 317.5 | 269.9 |
| 8″ | 342.9 | 298.5 | 381.0 | 330.2 |
| 12″ | 482.6 | 431.8 | 520.7 | 450.9 |
| 16″ | 596.9 | 539.8 | 647.7 | 571.5 |
| 20″ | 698.5 | 635.0 | 774.7 | 685.8 |
| 24″ | 812.8 | 749.3 | 914.4 | 812.8 |
F22 Alloy Steel CL 2 Weld Neck Flange Weight Chart
| NPS | Class 150 | Class 300 |
|---|---|---|
| 2″ | 2.3 | 3.6 |
| 4″ | 7.7 | 12.2 |
| 6″ | 11.8 | 22.7 |
| 8″ | 20.4 | 36.7 |
| 12″ | 49.9 | 83.9 |
| 16″ | 81.6 | 133.8 |
| 20″ | 129.3 | 229.1 |
| 24″ | 195.0 | 358.3 |
Need ASTM A182 F22 Class 3 Blind Flange In A Hurry?Mail the size list, we quote inside 24 hours for large diameter and high-class flanges too.
UNS K21590 SWRF Flange Chemical Composition
Composition held against ASTM A182 F22 heat analysis limits, Class 1 and Class 3 alike.
IronFe
Balance
ChromiumCr
2.00 – 2.50%
MolybdenumMo
0.87 – 1.13%
ManganeseMn
0.30 – 0.60%
CarbonC
0.05 – 0.15%
SiliconSi
0.50% max
PhosphorusP
0.040% max
SulphurS
0.040% max
ASTM A182 F22 Class 1 Flange Mechanical Properties
Minimum Values Per ASTM A182 Table 2
Class 3 is normalized and tempered for higher strength; Class 1 is the annealed, lower-strength option. There is no Class 2 in Grade F22.
| Property | F22 Class 1 | F22 Class 3 |
|---|---|---|
| Tensile Strength, min | 60 ksi [415 MPa] | 75 ksi [515 MPa] |
| Yield Strength, min | 30 ksi [205 MPa] | 45 ksi [310 MPa] |
| Elongation in 2 in., min | 20% | 20% |
| Reduction Of Area, min | 35% | 30% |
| Brinell Hardness, HBW | 170 max | 156 – 207 |
| Heat Treatment | Anneal, 900°C, Furnace Cool | Normalize & Temper, 900°C Air Cool, Temper 675°C min |
Physical Properties Of ASTM A182 F22 Class 3 Blind Flange
Every top Alloy Steel F22 Flanges supplier in India provides complete mill test certificates.
Density
~7.85 g/cm³
0.284 lb/in³, typical for low alloy steel
Melting Range
~1400 – 1450°C
Typical for 2.25Cr-1Mo chemistry
Modulus Of Elasticity
~210 GPa
At room temperature, typical low alloy steel
Max Service Temp
595°C
1100°F, upper limit for F22 pressure parts
Buy Sa182 F22 Cl1/Cl3 Threaded & Socket Weld Flanges as per ANSI/ASME B16.5 & BS4504 Standards for Boiler, Power & Petrochemical Piping
UNS K21590 SWRF Flange Equivalent Grades
One Chemistry, Several Nameplates
Alloy Steel F22 Flanges read the same 2.25Cr-1Mo chemistry across each standard.
ASTM / UNS
- ASTM A182 F22
- ASME SA182 F22
- UNS K21590
DIN / EN / Werkstoff
- Werkstoff Nr. 1.7380
- DIN 10CrMo9-10 (Formerly 10CrMo910)
- EN 10222-2 Route
JIS
- JIS SFVAF22B
- Matches UNS K21590 Basis
- Confirmed On Order
System Partner Grades
- ASTM A335 P22 Seamless Pipe
- ASTM A234 WP22 Buttweld Fittings
- ASTM A217 WC9 Valve Castings
Nearby ASTM Grades
- ASTM A182 F11 (1.25Cr-0.5Mo)
- ASTM A182 F21 (3Cr-1Mo)
- ASTM A182 F91 (9Cr-1Mo-V)
Indian Market Note
- No Single-Number IS Equivalent
- Ordered Directly As F22 / K21590
- Compared By Chemistry Basis
Weekly Delivery Of Alloy Steel F22 Flanges In Below Location
| Export To | Continent | Port | Shipping Time |
|---|---|---|---|
 Saudi Arabia |
Middle East | Port of Dammam | 18 Days |
 Germany |
Europe | Port of Hamburg | 27 Days |
Alloy Steel F22 Flanges vs Alloy Steel F11 Flanges
Buyers often compare F22 with F11. We get asked this on almost every enquiry.
Alloy Steel F11 Flanges
- 1.25Cr-0.5Mo, lighter alloying
- Suits moderate steam temperature up to ~540°C
- Lower hydrogen attack resistance
- Lower material cost than F22
Alloy Steel F22 Flanges
- 2.25Cr-1Mo, higher chromium and molybdenum
- Rated to 595°C service temperature
- Superior high-temperature hydrogen attack resistance
- Standard forging grade for hydroprocessing units
Manufacturing Process Of Alloy Steel F22 Pipe Flanges
From Forging Billet To Certified Flange
How UNS K21590 stock becomes a finished, traceable Alloy Steel F22 Flanges piece at our works.
Forging
Billet hot-forged to flange shape and rough dimensions
Normalize & Temper
Heated to 900°C, air cooled, tempered above 675°C for Class 3
Machining & Facing
Bore, bolt circle and RF/RTJ face machined to ASME B16.5
Inspection
Chemistry, hardness, dimensions and surface finish cleared
Dispatch
Tagged and shipped with EN 10204 3.1 certificate
Chrome Moly F22 Pipe Flanges Application Industries
Chrome-moly flanges suit high-temperature, hydrogen-duty systems across a wide industrial spread.
Boiler & Power Plant Steam Headers
Refinery Hydrotreater & Hydrocracker Units
Petrochemical Process Piping
Oil & Gas Wellhead Connectors
High-Pressure Hydrogen Service Lines
Heat Exchanger & Reactor Nozzles
Fertilizer & Ammonia Plant Piping
Cross-Country High-Temperature Pipelines
Surface Finish For Astm A182 Weld Neck Flange
F22 is a bare alloy steel, so surface protection is chosen to suit the service and shipping route.
As-Forged / Machined
Standard
Bare finish for direct in-plant welding
Shot Blast & Prime
On Request
SA 2.5 blast plus rust-preventive primer
VCI Wrap
Export Standard
Vapour corrosion inhibitor film for sea freight
Face Protection
Wooden / Plastic Cap
Raised face and RTJ groove protected in transit
Alloy Steel F22 Flanges Price In India
Driven Pricing, Not A Flat Rate Card
Alloy surcharge for chromium and molybdenum moves week to week, so our F22 pricing follows the day’s reference.
Send a size-wise quantity list for per-piece pricing. Get it inside 24 hours. HSN and GST are already worked out.
Monthly Delivery of Alloy Steel F22 Flanges in below countries:
| Export to | Continent | Shipping time |
|---|---|---|
 Philippines |
Asia | 14 Days |
 Spain |
Europe | 30 Days |
 Germany |
Europe | 20 Days |
 Malaysia |
Asia | 10 Days |
Stock, MOQ & Dispatch Timeline
From Enquiry To Gate Pass
The real clock on an Alloy Steel F22 Flanges order, not a marketing promise.
Day 0 – Enquiry
Mail size, class and quantity to our Mumbai desk
Day 1 – Driven Quote
Per-piece rate against the day’s alloy reference, GST included
Day 2 – Inspection
Chemistry, hardness and dimensions cleared, TPI called if needed
Day 3 – Dispatch
Stock sizes leave with LR copy and full document set
Stock Range
½ – 12 Inch
Class 150 & 300 held in Mumbai
Minimum Order
50 Kg
Per size, trial lots considered
Large Size / High Class Lead Time
20 – 30 Days
Above 12 inch or Class 900 and up, indented against order
Export Transit
Nhava Sheva
Air or sea, FOB CFR CIF DDP quoted
Alloy Steel F22 Slip On Flanges Documentations
A reliable Alloy Steel F22 Flanges supplier in India supports high-temperature piping systems.
Mill Test Certificate
Chemical, mechanical and heat treatment record per EN 10204 3.1
Standard
Third Party Inspection Report
SGS, BV, TUV or Lloyd’s, arranged on request
On Request
Ultrasonic / Dye Penetrant Report
NDT record for forging soundness and surface integrity
On Request
Certificate Of Origin
Chamber-attested, needed for most export shipments
Export
Packing List & Invoice
Heat-number traceable listing for every carton or crate
Standard
Testing Of Alloy Steel F22 Industrial Flanges
A serious flange stockist tests every batch of Alloy Steel F22 Flanges before dispatch.
Chemical / PMI Analysis
Spectro reading against UNS K21590 composition limits
Hardness Test
Brinell readings recorded lot wise, checked against class limit
Tensile & Yield Test
Tensile, yield and elongation tested per ASTM A182
Impact Test
Charpy V-notch on request for low-temperature or sour duty
Dimensional Inspection
OD, bolt circle, bore and facing checked against ASME B16.5
Ultrasonic & Dye Penetrant
Forging soundness and surface flaws checked before finishing
Alloy Steel F22 Flanges Frequently Asked Questions
What type of steel is used in ASTM A182 F22 Flanges?
F22 is a 2.25Cr-1Mo low alloy steel used in high-temperature piping.
What material is equivalent to UNS K21590 Alloy Steel F22 Flanges?
DIN 10CrMo9-10 and Werkstoff 1.7380 are direct chemistry equivalents.
What sizes and classes are available in Alloy Steel F22 Pipe Flanges?
Available from ½″ to 60″ NB, in Class 150# to 2500#.
What is the UNS number for Chrome Moly F22 Pipe Flanges?
UNS K21590 applies to both F22 Class 1 and Class 3.
What is the HSN code for Alloy Steel F22 Industrial Flanges?
HSN 7307, taxed at 18% GST in India.
We Collaborate With Traders in the Following Locations
| Morocco | Kenya | Gabon | Houston | Dubai | Tunisia |
| Abu Dhabi | South Africa | Nigeria | Mozambique | USA | Oman |
| Saudi Arabia | Riyadh | Dammam | Al-khobar | UAE | Al Jubail |
| Angola | Ethiopia | Egypt | Zambia | Ghana | Tanzania |
| New South Wales | Indiana | Texas | California | Algeria | Carolina |
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