Why Furnace Operators Order ASTM A312 TP446 Pipe From Ganpat Industrial Corporation?
High Chromium
23 to 27% chromium in every length
Annealed & Pickled
Clean, scale free pipe surface
Ready Stock
Common sizes held for dispatch
Test Certificates
EN 10204 3.1 or 3.2 supplied
Tested Pipe
Hydrostatic and ultrasonic checks
ASTM A312 TP446 Pipe Key points
- 1Grade: Ferritic TP446 • S44600
- 2Making: Seamless • ERW • EFW • LSAW
- 3Sizes: NB 1/8 to NB 24 stock
- 4Schedules: SCH 5S to 160, STD, XS, XXS
- 5Standards: A312 • SA312 • B36.19M
- 6Key Use: Furnace • Glass mold
Ganpat Industrial Corporation of Mumbai supplies ASTM A312 TP446 Pipe to furnace builders. Industrial customers across India have bought from the team since 1997. ASME SA312 TP 446 Pipe is ferritic and cannot be hardened by heat treatment. Chromium of 23 to 27% gives it strong oxidation resistance. Its corrosion resistance is mild, so heat service is its strength. Choose ASTM A312 TP 446 Seamless Pipes for furnace parts and glass molds. ASTM A312 TP 446 Welded Pipe suits longer runs up to NB 24. ASME SA312 TP 446 Hollow Pipe serves oil burner components. ASTM A312 TP446 Square Pipe follows your drawing, not the A312 round standard. Seamless and welded pipe leaves with an EN 10204 test certificate.
Mumbai · ASTM A312 TP446 Pipe Stockist & Exporter
ASTM A312 TP446 Pipe handles hot furnace atmospheres without heavy scaling.
Seamless and welded pipe is ready in Mumbai. Ask for rates.
- ✓ISO 9001:2015
- ✓ISO 14001:2015
- ✓OHSAS 18001:2007
- ✓PED Certified
- ✓Petrofac Approved
25% Chromium Heat Resistant A312 TP446 Seamless & Welded Pipe Supplier in India with Hydrostatic & Ultrasonic Tested Quality
Specification Of ASTM A312 TP446 Pipe
Furnace builders rely on us, an ASTM A312 TP446 Pipe supplier in India.
Family
Ferritic
Non-heat-treatable
Numbers
UNS S44600
AISI 446
Chromium
23 to 27%
Drives scale resistance
Corrosion
Mild
Heat is the strength
Pipe Names
- ASTM A312 TP446 Pipe
- ASTM A312 TP 446 Pipe
- ASTM A312 TP 446 Pipes
- ASME SA312 TP 446 Pipe
Market Names
- ASTM A312 TP 446 Austenitic Stainless Steel Pipes
- A312 446 Stainless Steel Hot Finished Pipe
- Inox 446 pipe
- SS 446 pipe
Seamless
- ASTM A312 TP 446 SS Seamless Pipe
- ASTM A312 TP 446 Seamless Pipes
- ASTM A312 TP 446 Stainless Steel Seamless Pipe
- ASME SA312 TP446 Seamless Pipe
Welded
- ASTM A312 TP 446 Welded Pipe
- ASME SA312 TP 446 Welded Pipes
- ERW and EFW makes
- LSAW and fabricated makes
Shaped Pipe
- ASME SA312 TP 446 Hollow Pipe
- ASTM A312 TP 446 Hollow Pipe
- ASTM A312 TP 446 SS Hexagonal Pipes
- ASTM A312 TP 446 Bush Hex Pipe
Section Shapes
- ASTM A312 TP446 Square Pipe
- SA 312 TP 446 Rectangular Pipe
- A312 TP446 Clad Pipe
- U-bent and straight pipe
Finished Pipe
- ASTM A312 Gr TP446 Cold Finished Seamless Pipe
- ASTM A213 TP446 Cold Finished Pipe
- SA 213 TP446 Hot Finished Seamless Pipe
- ASTM A312 Gr TP446 Bright Annealed Pipe
Standards Quoted
- A312 with ASME SA312
- A358 for EFW pipe
- A213 and A269 also cited
- ASME B36.19 and B36.19M
- EN 10217-7 and NSF 61 listed
Chemical Limits Of ASTM A312 TP 446 Stainless Steel Seamless Pipe
ASTM A312 TP446 Pipe carries 23 to 27% chromium for scale resistance.
| Element | Symbol | Limit (wt %) |
|---|---|---|
| Chromium | Cr | 23.0 to 27.0 |
| Carbon | C | 0.20 max |
| Manganese | Mn | 1.50 max |
| Silicon | Si | 1.0 max |
| Nickel | Ni | 0.25 max |
| Phosphorus | P | 0.040 max |
| Sulphur | S | 0.030 max |
| Iron | Fe | Balance |
Strength And Hardness Of ASTM A312 TP 446 Welded Pipe
As an ASTM A312 TP446 Pipe manufacturer in India, we test every lot.
Tensile Strength
550 MPa
Typical
Yield Strength
345 MPa
0.2% Offset
Elongation
20%
At Break
Elastic Modulus
200 GPa
Stiffness
| Scale | Value | Basis |
|---|---|---|
| Rockwell B | 83 | Measured |
| Rockwell A | 51.1 | Estimated |
| Brinell | 159 | Estimated |
| Vickers | 159 | Estimated |
| Knoop | 173 | Estimated |
Poisson Ratio
0.27 to 0.30
Typical range
Heat Behaviour Of ASME SA312 TP 446 Pipe
ASTM A312 TP446 Pipe is ferritic, so heat treatment cannot harden it.
Hot Work
Start at 1149 °C, finish at 871 °C
Anneal
Held near 800 to 860 °C
Water Quench
Rapid cooling after the anneal
Pickle
Scale cleaned from the surface
Delivery Codes Quoted
- +A
- +NT
- +N
- +AT
- +QT
- +P
Melting Routes
- EAF + LF + VD
- EAF + PESR
- EAF
- VIM + PESR
- EAF + ESR
ASTM A312 TP446 Pipe Are Delivered Weekly to the Following Countries.
| Export to | Countries | Continent | Shipping time | Ports |
|---|---|---|---|---|
| Nigeria | Africa | 30 | Harcourt | |
| Argentina | South America | 45 | Puerto Deseado | |
| Colombia | South America | 45 | Santa Marta |
Physical Data For ASME SA 312 TP446 Annealed Pipe
ASTM A312 TP446 Pipe data below guides furnace design work.
| Property | Value |
|---|---|
| Density | 7.7 g/cm³ (7750 kg/m³) |
| Melting range | 1400 to 1510 °C |
| Elastic modulus | 200 GPa |
| Expansion, 0–100 °C | 10.4 µm/m·°C |
| Conductivity | 21.6 W/m·K |
| Specific heat | 460 J/kg·K |
| Electrical resistivity | 570 nΩ·m |
Types Of ASTM A312 TP446 Pipe
ASTM A312 TP446 Pipe ships in many forms, from seamless to clad pipe.
ASTM A312 TP 446 Seamless Pipes
Seamless
ASTM A312 TP 446 Welded Pipe
Welded
ASME SA312 TP 446 Hollow Pipe
Hollow
ASTM A312 TP 446 SS Hexagonal Pipes
Hexagonal
ASTM A312 TP 446 Bush Hex Pipe
Bush Hex
ASTM A312 TP446 Square Pipe
Square
SA 312 TP 446 Rectangular Pipe
Rectangular
A312 TP446 Clad Pipe
Clad
Making Process
- Hot finished
- Cold finished or drawn
- Redrawn
- Extruded
Welded Makes
- ERW pipe
- EFW pipe
- LSAW pipe
- Fabricated pipe
Sizes And Schedules Of ASME SA312 TP446 Seamless Pipe
ASTM A312 TP446 Pipe stock covers NB 1/8 up to NB 24.
| NB | OD (in) | OD (mm) | 5S wall (mm) | 10S wall (mm) |
|---|---|---|---|---|
| 1/8 | 0.405 | 10.29 | – | 1.24 |
| 1/4 | 0.540 | 13.72 | – | 1.65 |
| 3/8 | 0.675 | 17.15 | – | 1.65 |
| 1/2 | 0.840 | 21.34 | 1.65 | 2.11 |
| 3/4 | 1.050 | 26.67 | 1.65 | 2.11 |
| 1 | 1.315 | 33.40 | 1.65 | 2.77 |
| 1 1/2 | 1.900 | 48.26 | 1.65 | 2.77 |
| 2 | 2.375 | 60.33 | 1.65 | 2.77 |
| 3 | 3.500 | 88.90 | 2.11 | 3.05 |
| 4 | 4.500 | 114.30 | 2.11 | 3.05 |
| 6 | 6.625 | 168.28 | 2.77 | 3.40 |
| 8 | 8.625 | 219.08 | 2.77 | 3.76 |
| 10 | 10.750 | 273.05 | 3.40 | 4.19 |
| 12 | 12.750 | 323.85 | 3.96 | 4.57 |
| 16 | 16.000 | 406.40 | 4.19 | 4.78 |
| 20 | 20.000 | 508.00 | 4.78 | 5.54 |
| 24 | 24.000 | 609.60 | 5.54 | 6.35 |
| NB | OD (in) | 40S wall (mm) | 80S wall (mm) |
|---|---|---|---|
| 1/8 | 0.405 | 1.73 | 2.41 |
| 1/4 | 0.540 | 2.24 | 3.02 |
| 3/8 | 0.675 | 2.31 | 3.20 |
| 1/2 | 0.840 | 2.77 | 3.73 |
| 3/4 | 1.050 | 2.87 | 3.91 |
| 1 | 1.315 | 3.38 | 4.55 |
| 1 1/2 | 1.900 | 3.68 | 5.08 |
| 2 | 2.375 | 3.91 | 5.54 |
| 3 | 3.500 | 5.49 | 7.62 |
| 4 | 4.500 | 6.02 | 8.56 |
| 6 | 6.625 | 7.11 | 10.97 |
| 8 | 8.625 | 8.18 | 12.70 |
| 10 | 10.750 | 9.27 | 12.70 |
| 12 | 12.750 | 9.53 | 12.70 |
| 16 | 16.000 | 9.53 | 12.70 |
| 20 | 20.000 | 9.53 | 12.70 |
| 24 | 24.000 | 9.53 | 12.70 |
| Make | Range |
|---|---|
| Seamless | NB 1/2 to 16 |
| ERW and welded | NB 1/2 to 24 |
| EFW | NB 6 to 100 |
| Large sizes on request | Up to NB 30 |
| Small bore tube OD | 1/16 to 3 1/2 in |
| Tube wall | 0.010 to 0.375 in |
Schedules Quoted
- SCH 5 and 5S
- SCH 10, 20, 30
- SCH 40 and 40S
- SCH 60, 80 and 80S
- SCH 100, 120, 140, 160
- STD, XS and XXS
Tube Gauges
- SWG 10 and 12
- SWG 14 and 16
- SWG 18 and 20
Size missing from the charts above?Give NB, schedule and length
Lengths, Ends And Tolerance Of ASTM A312 TP 446 SS Seamless Pipe
Order ASTM A312 TP446 Pipe with the length, ends and tolerance you need.
Lengths
- Single random
- Double random
- Cut length
- 5 to 11 m range
- About 6 m or 17 to 24 ft
Pipe Ends
- Plain end
- Beveled end
- Threaded end
Extra Services
- Beveling
- Threading
- Polishing
- Cutting
- Heat treatment
| NPS | Plus, in (mm) | Minus, in (mm) |
|---|---|---|
| 1/8 to 1 1/2 | 1/64 (0.4) | 1/32 (0.8) |
| Larger than 1 1/2, to 4 | 1/32 (0.8) | 1/32 (0.8) |
| Above 4 to 8 | 1/16 (1.6) | 1/32 (0.8) |
| Above 8 to 18 | 3/32 (2.4) | 1/32 (0.8) |
| Above 18 to 26 | 1/8 (3.2) | 1/32 (0.8) |
| Above 26 to 34 | 5/32 (4.0) | 1/32 (0.8) |
| Above 34 to 48 | 3/16 (4.8) | 1/32 (0.8) |
| Pipe size | Wall type | Plus | Minus |
|---|---|---|---|
| NPS 1/8 up to 2 1/2 | Any wall | 20.0 | 12.5 |
| NPS 3 to 18 | t/D up to 5% | 22.5 | 12.5 |
| NPS 3 to 18 | t/D over 5% | 15.0 | 12.5 |
| NPS 20 and above | Welded | 17.5 | 12.5 |
| NPS 20 and above | Seamless, thin | 22.5 | 12.5 |
| NPS 20 and above | Seamless, thick | 15.0 | 12.5 |
Finish Options For ASTM A312 Gr TP446 Bright Annealed Pipe
ASTM A312 TP446 Pipe finishes range from pickled to mirror polished.
Surface Finish
- 180 to 600 grit
- No.4 and 2B
- BA, mirror and matt
- Polished and decorative
- Electropolished
Cleaning
- Pickled
- Precleaned
- Passivated
- Cleaned
Delivery Condition
- ASTM A312 Gr TP446 Bright Annealed Pipe
- Annealed and pickled
- Cold drawn
- Polished
Wall Style
- Thin wall
- Thick wall
- Custom wall
Shapes Of ASTM A312 TP 446 SS Hexagonal Pipes
Burner makers buy from us, an ASTM A312 TP446 Pipe supplier in India.
Hexagonal Pipe
- ASTM A312 TP 446 SS Hexagonal Pipes
- Made to your drawing
Bush Hex Pipe
- ASTM A312 TP 446 Bush Hex Pipe
- Machined to your drawing
Square Pipe
- ASTM A312 TP446 Square Pipe
- Made to your drawing
Rectangular Pipe
- SA 312 TP 446 Rectangular Pipe
- Made to your drawing
Hollow And U-bent
- Hollow section pipe
- U-bent pipe
- Straight pipe
Monthly Delivery of ASTM A312 TP446 Pipe to Below Countries
| Export to | Countries | Continent | Shipping time | Ports |
|---|---|---|---|---|
| Thailand | Asia | 7 | Laem Chabang | |
| Indonasia | Asia | 9 | Belawan |
Buy ASME SA312 TP 446 Hollow Pipe with Oxidation & Scaling Resistance up to 1100°C for Heat-Resistant Furnace Service
Welding And Machining Of ASME SA312 TP 446 Welded Pipes
Fabricators handle ASTM A312 TP446 Pipe with care during cutting and welding.
Machining
Use positive feeds, sharp tools and rigid mounts.
Hardness Effect
The ferritic structure makes the grade hard to cut.
Welding
Conventional methods work, except oxyacetylene welding.
Expansion Gap
Weld metal and base metal expand differently.
Filler Choice
Filler may not match the base scaling resistance.
Cold Work
The grade resists cold work more than treated steels.
Equivalent Gardes For ASTM A312 TP446 Pipe
Equivalent names for ASTM A312 TP446 Pipe appear below.
ASTM / UNS
- UNS S44600
- AISI 446
Werkstoff, EN and DIN
- WNR 1.4762
- EN X10CrAlSi25
- DIN X10CrAl24
JIS (Japan)
- SUS 446
AFNOR (France)
- Z12CAS25
Other Names
- INOX 446
- STAS X10CrAl240
- PN H24JS
- SS 2322
Also Quoted
- WNR 1.4763
- EN X10CrAlSi24
- DIN X18CrN28
Application Of ASME SA312 TP 446 Hollow Pipe
ASTM A312 TP446 Pipe serves furnaces, glass molds and burner parts.
Furnace Parts
Glass Molds
Oil Burner Parts
High Temperature Plant
Corrosive Fluids
Gas And Oxygen Lines
Liquid Lines
Slurry Lines
Testing And Papers For ASTM A213 TP446 Cold Finished Pipe
Every length of ASTM A312 TP446 Pipe is tested before dispatch.
Hydrostatic Test
Pressure proof on the pipe
Flattening Test
Ductility checked on pipe
Ultrasonic Test
Wall scanned for flaws
Heat Treatment Review
Anneal records reviewed
Inspection Reports
Origin, labels and quantity verified
Mill Test Certificates
EN 10204 3.1 or 3.2
Planning furnace pipework?Share NB, schedule and quantity now
Our Diverse Client Base in the Following Continents
| Continents | Country |
|---|---|
| Africa | Nigeria, Egypt, Kenya, Ghana, South Africa |
| South America | Colombia, Chile, Peru, Brazil, Argentina |
| Australia | New Zealand, Fiji, Samoa, Papua New Guinea |
| Asia | India, Indonesia, Saudi Arabia, Iran, South Korea |
| North America | United States, Mexico, Canada |
| Europe | UK, Italy, Germany, France, Spain, Poland |
ASTM A312 TP446 Pipe Frequently Asked Questions
What is ASTM A312 TP446 Pipe?
It is ferritic stainless pipe with 23 to 27% chromium for hot service.
Where is ASME SA312 TP 446 Hollow Pipe used?
It suits furnace parts, glass molds and oil burner components.
Does A312 cover ASTM A312 TP446 Square Pipe?
A312 covers round pipe only. Square shapes follow your drawing.
How is ASTM A312 TP 446 Welded Pipe joined?
Conventional welding works, but oxyacetylene welding is not advised.
Can ASTM A312 TP446 Pipe be hardened by heat treatment?
No. Grade 446 is ferritic and cannot be hardened that way.
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