Why Corrosion Critical Buyers Order ASTM A312 TP904L Pipe From Ganpat Industrial Corporation?
Super Austenitic
Copper alloyed for acid service
Annealed & Pickled
Clean finish, ready for welding
Ready Stock Sizes
Stocked from 1/8 NB to 24 NB
Mill Test Certificate
Issued with every dispatch
Third Party Inspection
EN 10204 3.2 on request
ASTM A312 TP904L Pipe Technicalities
- 1Grade: TP904L • UNS N08904
- 2Making: Seamless • Welded • EFW
- 3Sizes: Stocked 1/8 NB to 24 NB
- 4Schedules: SCH 5 • 10 • 40 • 80 • XS • XXS
- 5Standards: ASME SA312 • B36.19M • B36.10M
- 6Key Use: Acid • Offshore
Ganpat Industrial Corporation, Mumbai, stocks ASTM A312 TP904L Pipe for acid service. Industrial buyers have relied on the team since 1997. Grade 904L is a super austenitic steel alloyed with copper. Copper and molybdenum help it resist sulphuric acid. Pipe is cut to size from seamless and welded stock. Every dispatch carries a mill test certificate.
Mumbai · ASTM A312 TP904L Pipe Stockist & Exporter
ASTM A312 TP904L Pipe resists sulphuric acid and chloride cracking.
Seamless and welded lengths wait in stock. Ask for rates.
- ✓ISO 9001:2015
- ✓ISO 14001:2015
- ✓OHSAS 18001:2007
- ✓PED Certified
- ✓Petrofac Approved
Super Austenitic Copper Alloyed A312 TP904L Seamless & Welded Pipe Supplier in India with Third Party Inspection
Specifications Of ASTM A312 TP904L Pipe
Acid plants rely on us, an ASTM A312 TP904L Pipe supplier in India.
Pipe Names
- ASTM A312 TP904L Pipe
- ASTM A312 TP 904L Pipe
- ASTM A312 TP904L Stainless Steel Pipes
- ASME SA312 TP904L Stainless Steel Pipes
- ASME SA 312 TP904L SS Pipes
Grade Names
- UNS N08904
- WNR 1.4539
- EN X1NiCrMoCu25-20-5
- AISI 904L
Seamless
- ASTM A312 TP 904L Seamless Pipe
- ASTM A312 UNS N08904 904L Seamless Pipe
- ASTM A312 TP904L Stainless Steel Seamless Pipe
- ASTM A312 TP904L Seamless Pipe
Welded
- ASTM A312 TP904L Welded Pipe
- SA312 TP904L Welded Pipe
- ERW and EFW makes
- CDW and LSAW makes
Shaped Pipe
- ASME SA 312 TP 904L Round Pipe
- SA 312 TP 904L Square Pipe
- ASTM A312 UNS N08904 Square Pipe
- Rectangular pipe
Condition
- ASTM A312 TP904L Annealed Pipe
- A312 TP 904L Cold Finished Pipe
- A312 UNS N08904 Hot Finished Pipe
- ASTM A312 Grade TP904L Solution Annealed Pipe
Standards
- A312 with ASME SA312
- A358 for EFW pipe
- ASME B36.10M and B36.19M
- NACE MR0175 stated
Paperwork
- EN 10204 3.1 and 3.2
- Third party inspection
- NABL lab reports
- Heat number marking
Types Of ASTM A312 TP904L Pipe

ASTM A312 TP 904L Seamless Pipe
Seamless

SA312 TP904L Welded Pipe
Welded

ERW TP 904L Pipe
ERW

EFW TP 904L Pipe
EFW

ASME SA 312 TP 904L Round Pipe
Round

SA 312 TP 904L Square Pipe
Square

Rectangular TP 904L Pipe
Rectangular

A312 TP 904L Cold Finished Pipe
Cold Finished
ASTM A312 TP904L Welded Pipe Dimensions
Stock runs from NB 1/8 up to NB 24.
| NB (inch) | OD (mm) | SCH 5S (mm) | SCH 10S (mm) | SCH 40S (mm) | SCH 80S (mm) |
|---|---|---|---|---|---|
| 1/8 | 10.29 | – | 1.24 | 1.73 | 2.41 |
| 1/4 | 13.72 | – | 1.65 | 2.24 | 3.02 |
| 3/8 | 17.15 | – | 1.65 | 2.31 | 3.20 |
| 1/2 | 21.34 | 1.65 | 2.11 | 2.77 | 3.73 |
| 3/4 | 26.67 | 1.65 | 2.11 | 2.87 | 3.91 |
| 1 | 33.40 | 1.65 | 2.77 | 3.38 | 4.55 |
| 1 1/2 | 48.26 | 1.65 | 2.77 | 3.68 | 5.08 |
| 2 | 60.33 | 1.65 | 2.77 | 3.91 | 5.54 |
| 3 | 88.90 | 2.11 | 3.05 | 5.49 | 7.62 |
| 4 | 114.30 | 2.11 | 3.05 | 6.02 | 8.56 |
| 6 | 168.28 | 2.77 | 3.40 | 7.11 | 10.97 |
| 8 | 219.08 | 2.77 | 3.76 | 8.18 | 12.70 |
| 10 | 273.05 | 3.40 | 4.19 | 9.27 | 12.70 |
| 12 | 323.85 | 3.96 | 4.57 | 9.53 | 12.70 |
| 16 | 406.40 | 4.19 | 4.78 | 9.53 | 12.70 |
| 20 | 508.00 | 4.78 | 5.54 | 9.53 | 12.70 |
| 24 | 609.60 | 5.54 | 6.35 | 9.53 | 12.70 |
| Item | Range |
|---|---|
| Seamless and ERW | NB 1/2 to 24 |
| EFW | NB 6 to 100 |
| Pipe OD | 6.00 to 914.4 mm |
| Wall thickness | 0.3 to 50 mm |
| Schedules | SCH 5 to 160, XS and XXS |
Need a size that is not listed?Tell us NB, schedule and length
Lengths, Ends And Finish Of A312 TP 904L Cold Finished Pipe
Specify length, end type and finish in your order.
Lengths
- Single random length
- Double random length
- Cut length to order
- Standard 5.8 or 6 m lengths
Pipe Ends
- Plain end
- Beveled end
- Threaded end
- Both ends beveled
Surface Finish
- 2B, No.4, No.1
- No.8 mirror finish
- Mechanical polish
- Electropolished
Delivery Condition
- Annealed and pickled
- Bright annealed
- Hot finished
- Cold drawn
Wall Thickness
- ASME SA312 TP904L Thin Wall Pipe
- From 0.3 mm wall
- Up to 50 mm wall
Marking
- Specification and grade
- NB size and schedule
- Heat number
- Manufacturer name or logo
Chemical Composition Of ASME SA312 TP904L Stainless Steel Pipes
Copper and molybdenum lift this grade above 316L and 317L.
IronFe
Balance
NickelNi
23.0–28.0%
ChromiumCr
19.0–23.0%
MolybdenumMo
4.0–5.0%
CopperCu
1.0–2.0%
CarbonC
≤ 0.020%
ManganeseMn
≤ 2.0%
SiliconSi
≤ 1.0%
NitrogenN
≤ 0.10%
PhosphorusP
≤ 0.045%
SulphurS
≤ 0.035%
ASTM A312 TP904L Pipe Delivered Weekly to the Following Countries:
| Export to | Countries | Continent | Shipping time | Ports |
|---|---|---|---|---|
| Indonasia | Asia | 9 | Tanjung Perak | |
| Germany | Europe | 20 | Bremerhaven | |
| Vietnam | Asia | 10 | Can Tho |
Copper Alloying In ASTM A312 TP904L Stainless Steel Pipes
Copper and nickel protect the pipe where 316L falls short.
Plain 316L Pipe
- Often insufficient in acid plants
- Lower alloy content
TP 904L Pipe
- Copper adds sulphuric acid resistance
- High nickel resists chloride cracking
- Molybdenum limits crevice attack
Hot Work
Worked at 850 to 1150 °C
Solution Anneal
Held at 1050 °C or above
Water Quench
Fast cooling after the hold
Pickle
Scale removed after annealing
Mechanical Strength Of ASTM A312 TP904L Annealed Pipe
As an ASTM A312 TP904L Pipe manufacturer in India, we test every lot.
Tensile Strength
490 MPa
Minimum
Yield Strength
220 MPa
0.2% Proof Minimum
Elongation
35% min
In 2 in or 4D
Hardness
90 HRB max
Annealed
Magnetism
Non-magnetic
As stated by suppliers
Weld Filler
ER385
ISO S 20 25 5 Cu L
Hot Working
850 to 1150 °C
Quench and anneal after
Service Limit
450 °C
Quoted by one source
ERW Pipe
Straight seam, NB 1/2 to 24 inch
ERW
EFW Pipe
Arc fused seam, NB 6 to 100
EFW
CDW Pipe
Cold drawn welded
CDW
Radiographed Pipe
Seam checked by 100% radiography
Radiography
LSAW Pipe
Longitudinal submerged arc
LSAW
Buy AISI 904L SS Annealed Pipe in Cut to Size Length for Pulp & Paper, Pharmaceutical, Desalination & Offshore Applications
Physical Properties Of ASTM A312 Grade TP904L Solution Annealed Pipe
Density and thermal data guide the pipe design.
| Property | Value |
|---|---|
| Density | 7950 kg/m³ |
| Melting range | 1350–1390 °C |
| Elastic modulus | 190 GPa |
| Expansion, 0–100 °C | 15.8 µm/m·°C |
| Conductivity | 11.5 W/m·K |
| Specific heat, 0–100 °C | 450 J/kg·K |
| Electrical resistivity | 952 nΩ·m |
Shapes Of ASTM A312 UNS N08904 Square Pipe
Offshore yards buy from us, an ASTM A312 TP904L Pipe supplier in India.
Round Pipe
- ASME SA 312 TP 904L Round Pipe
- Straight cut lengths
Square Pipe
- SA 312 TP 904L Square Pipe
- Made to your drawing
UNS Square Pipe
- ASTM A312 UNS N08904 Square Pipe
- Made to your drawing
Hot Finished Pipe
- A312 UNS N08904 Hot Finished Pipe
- Annealed after hot work
Other Shapes
- Rectangular and hydraulic pipe
- U-shape and coiled pipe
Monthly Delivery of ASTM A312 TP904L Pipe to Below Countries
| Export to | Countries | Continent | Shipping time | Ports |
|---|---|---|---|---|
| South Africa | Africa | 25-30 | Richards Bay | |
| Kenya | Africa | 19 | Kisumu |
Equivalent Grades Of ASTM A312 UNS N08904 904L Seamless Pipe
These names point to the same 904L stainless grade.
ASTM / UNS
- UNS N08904
- AISI 904L
Werkstoff / EN
- WNR 1.4539
- EN X1NiCrMoCu25-20-5
JIS (Japan)
- SUS 904L
BS (Britain)
- 904S13
AFNOR (France)
- Z2 NCDU 25-20
Application Of ASME SA 312 TP904L SS Pipes
Sulphuric Acid Plants
Pulp & Paper
Pharmaceutical Plants
Desalination
Offshore Drilling
Oil & Gas
Heat Exchangers
Fertilizer Plants
Testing Of ASTM A312 TP904L Seamless Pipe
Tension Test
Transverse or longitudinal specimen
Flattening Test
Ductility checked on pipe
PMI Report
Alloy grade confirmed per length
IGC Test
Intergranular attack checked
Ultrasonic Test
Pipe body scanned for flaws
Test Certificates
EN 10204 3.1 and 3.2
Planning an acid service line?Send NB, schedule and quantity today
We Collaborate With Traders in the Following Locations
| Regions | Country |
|---|---|
| South Carolina | USA |
| North America | USA, Canada, Mexico |
| South America | Brazil, Argentina, Colombia |
| North Africa | Egypt, Morocco, Algeria |
| West Africa | Nigeria, Ghana, Senegal |
| East Africa | Kenya, Ethiopia, Tanzania |
| Middle East | Saudi Arabia, Iran, Iraq |
| South Asia | India, Pakistan, Bangladesh |
| East Asia | China, Japan, South Korea |
| Melanesia | Fiji, Papua New Guinea |
ASTM A312 TP904L Pipe Frequently Asked Questions
What is ASTM A312 TP904L Pipe?
It is super austenitic pipe alloyed with copper for acid service.
Why choose ASTM A312 TP 904L Seamless Pipe for sulphuric acid?
Copper and molybdenum resist sulphuric acid. High nickel resists chloride cracking.
Does A312 cover SA 312 TP 904L Square Pipe?
No. Square shapes are made to your drawing instead.
Which sizes are stocked for ASTM A312 TP904L Welded Pipe?
We hold NB 1/8 to NB 24. Ask about larger sizes.
How is ASTM A312 TP904L Annealed Pipe delivered?
It ships annealed and pickled, or bright annealed on request.


