Why Do Geothermal & Heat Exchanger Buyers Choose Ganpat Industrial For ASTM B338 Tube?
Since 1997
Mumbai stockist and exporter of tubes, pipes and plates
ISO Certified
ISO 9001:2015 and ISO 14001:2015 systems
Petrofac Approved
PED certified and Petrofac approved supply
Titanium Know-How
CP and alloy grades for exchanger duty
Export Ready
Heat-traceable tubes, MTC 3.1, sea-worthy packing
ASTM B338 Tube Overview
- 1Form: ASTM B338 Seamless Tube and ASTM B338 Welded Tube
- 2Ends: Plain end and beveled end
- 3Size Range: OD 12.7 mm to 50.8 mm • wall to order
- 4Common Grades: Grade 1, 2, 7, 9, 12 (UNS R50250, R50400, R52400, R56320, R53400)
- 5Standards: ASTM B338 / ASME SB338
- 6Condition: Cold worked and stress relieved
ASTM B338 Tubes built for condensers, evaporators and heat exchangers. They are light, strong and resist chloride attack well. That makes them a smart pick for geothermal brine loops. Ganpat Industrial supplies them in seamless and welded form. Every lot ships with a heat-traceable certificate. Searching for an ASTM B338 Tube Manufacturer in India? Send us your grade, OD and wall. We source from mill partners and supply with an EN 10204 3.1 certificate.
Mumbai · ASTM B338 Tube Stockist & Exporter
Geothermal Grade SB338 Tubes, Ready Stock
Ganpat Industrial is a trusted ASTM B338 Tube Supplier in India. We supply ASTM B338 UNS R50250 & UNS R50400 tube for geothermal exchangers, condensers and evaporators, and ship to buyers across India and overseas.
- ✓ Since 1997
- ✓ ISO 9001:2015
- ✓ ISO 14001:2015
- ✓ OHSAS 18001:2007
- ✓ PED Certified
- ✓ Petrofac Approved
Lightweight SB338 Seamless and Welded Tube Supplier in India with Plain End & Beveled End
ASTM B338 Tube Specification Snapshot
Choose grade, OD and end finish. We come back with stock status on enquiry.
Governing Standard
- ASTM B338 / ASME SB338
- For condensers, evaporators and heat exchangers
- Seamless and welded tubes
- 28 grades listed in the standard
Size & Ends
- OD: 12.7 mm to 50.8 mm
- Plain end and beveled end
- Wall thickness to your order
- Cut lengths on request
Grade 1 (UNS R50250)
- ASTM B338 UNS R50250 Seamless Tubing
- ASTM B338 Titanium Gr1 Welded Tubes
- Softest, most formable grade
Grade 2 (UNS R50400)
- ASTM B338 UNS R50400 Welded Tubes
- ASTM B338 Titanium Grade 2 Seamless Tube
- Grade 2H: 400 MPa min UTS version
Alloy Grades
- Grade 7: Ti-0.12 to 0.25 Pd
- Grade 9: Ti-3Al-2.5V
- Grade 12: Ti-0.3Mo-0.8Ni
Condition
- Cold worked and stress relieved
- Annealed on request
- Pickled or bright surface
B338 UNS R50250 Seamless Tubing Dimensions: Wall Thickness Chart
Exchanger buyers order by gauge. Here is the conversion in one look.
| BWG | Wall (inch) | Wall (mm) |
|---|---|---|
| 14 | 0.083 | 2.11 |
| 16 | 0.065 | 1.65 |
| 18 | 0.049 | 1.24 |
| 20 | 0.035 | 0.89 |
| 22 | 0.028 | 0.71 |
| 24 | 0.022 | 0.56 |
B338 Tubes Sizes: 12.7 mm to 50.8 mm OD Tubes
Every OD below comes with plain end or beveled end.
OD 1/2″
12.70 mm
OD 5/8″
15.88 mm
OD 3/4″
19.05 mm
OD 1″
25.40 mm
OD 1-1/4″
31.75 mm
OD 1-1/2″
38.10 mm
OD 2″
50.80 mm
Other OD
On Request
Send your drawing
Types of ASTM B338 Tubing We Supply
ASTM B338 Seamless Tube
Seamless
B338 Welded Tubes
Welded
ASTM B338 ERW Tube
ERW
ASME SB338 Cold Drawn Tube
Cold Drawn
Buy Quality Assured ASTM B338 Tubing in Cold Worked & Stress Relieved Condition for geothermal use
Surface Finish Options for ASTM B338 Welded Tube
Stress relieved is our usual supply for geothermal exchanger duty. Other finishes on request.
Cold Worked & Stress Relieved
Annealed
Acid Pickled
Bright / Polished
Need ASTM B338 Tube Cut To Your Drawing?Send grade, OD, wall and metres. Quote comes back fast.
ASTM B338 Tube Weight Chart (kg per metre)
| OD (inch) | OD (mm) | Wall (mm) | Weight kg/m |
|---|---|---|---|
| 1/2″ | 12.70 | 0.71 (22 BWG) | 0.121 |
| 5/8″ | 15.88 | 0.89 (20 BWG) | 0.189 |
| 3/4″ | 19.05 | 0.89 (20 BWG) | 0.229 |
| 3/4″ | 19.05 | 1.24 (18 BWG) | 0.313 |
| 1″ | 25.40 | 1.24 (18 BWG) | 0.424 |
| 1″ | 25.40 | 1.65 (16 BWG) | 0.555 |
| 1-1/4″ | 31.75 | 1.65 (16 BWG) | 0.704 |
| 1-1/2″ | 38.10 | 1.65 (16 BWG) | 0.852 |
| 1-1/2″ | 38.10 | 2.11 (14 BWG) | 1.076 |
| 2″ | 50.80 | 2.11 (14 BWG) | 1.456 |
| 2″ | 50.80 | 2.77 (12 BWG) | 1.885 |
Formula: (OD − WT) × WT × π × 4.51 / 1000. Alloy grades differ slightly in density. Actual weight varies with tolerance.
Weekly Delivery of ASTM B338 Tube in Below Countries
| Export to | Continent | Shipping time |
|---|---|---|
 Kenya |
Africa | 19 Days |
 Oman |
Asia | 5 Days |
 USA |
North America | 40-60 Days |
 UAE |
Asia | 5 Days |
Standards Behind B338 Tubes
Know what your tube is tested against before you place the order.
Tube Standard
- ASTM B338
- ASME SB338
- Covers condenser and exchanger tube
Sister Standards
- ASTM B861: seamless pipe
- ASTM B862: welded pipe
- ASTM B265: sheet and plate
Chemistry Test Methods
- ASTM E1409: oxygen and nitrogen
- ASTM E1447: hydrogen
- ASTM E1941: carbon
ASTM B338 Tubing Grade Equivalents: UNS and Werkstoff
American (UNS)
- Grade 1 – UNS R50250
- Grade 2 – UNS R50400
- Grade 7 – UNS R52400
- Grade 9 – UNS R56320
- Grade 12 – UNS R53400
European (Werkstoff Nr.)
- Grade 1 – 3.7025
- Grade 2 – 3.7035
- Grade 7 – 3.7235
- Grade 9 – 3.7195
- Grade 12 – 3.7105
Related B338 Grades
- Grade 2H – UNS R50400, 400 MPa min UTS
- Grade 7H – UNS R52400, 400 MPa min UTS
- Grade 11 – UNS R52250
- Grade 16 – UNS R52402
ASME SB338 Cold Drawn Tube Chemical Composition
| Grade | N | C | H | Fe | O | Al | V | Pd | Mo | Ni |
|---|---|---|---|---|---|---|---|---|---|---|
| Grade 1 | 0.03 | 0.08 | 0.015 | 0.20 | 0.18 | – | – | – | – | – |
| Grade 2 | 0.03 | 0.08 | 0.015 | 0.30 | 0.25 | – | – | – | – | – |
| Grade 7 | 0.03 | 0.08 | 0.015 | 0.30 | 0.25 | – | – | 0.12–0.25 | – | – |
| Grade 9 | 0.03 | 0.08 | 0.015 | 0.25 | 0.15 | 2.5–3.5 | 2.0–3.0 | – | – | – |
| Grade 12 | 0.03 | 0.08 | 0.015 | 0.30 | 0.25 | – | – | – | 0.2–0.4 | 0.6–0.9 |
Mechanical Properties of SB338 Bright Annealed Tube
| Grade | Tensile Strength | Yield Strength | Elongation in 2 in. / 50 mm, % |
|---|---|---|---|
| Grade 1 | 35 [240] | 20 [138] | 24 |
| Grade 2 | 50 [345] | 40 [275] | 20 |
| Grade 7 | 50 [345] | 40 [275] | 20 |
| Grade 9 | 90 [620] | 70 [483] | 15 |
| Grade 12 | 70 [483] | 50 [345] | 18 |
H grades (2H, 7H) carry 58 ksi [400 MPa] minimum UTS and suit pressure-vessel use.
Physical Properties of ASTM B338 Seamless Tube
Handy numbers for heat transfer and weight calculations.
Density
4.51 g/cm³
Grade 2 reference
Elastic Modulus
105 GPa
Room temperature
Melting Point
~1665 °C
Commercially pure
Thermal Expansion
8.6 µm/m·K
20 to 100 °C
Thermal Conductivity
16 – 20 W/m·K
Sources vary
Magnetism
Non-magnetic
Safe near instruments
Not Sure Which Titanium Grade To Pick?Tell us the fluid, chloride level and temperature. We will suggest a grade.
Which ASTM B338 Tube Grade Fits Your Duty?
Grade 1
- Most ductile
- Easy to flare and expand
- ASTM B338 Titanium Grade 1 Tubing
Grade 2
- The everyday exchanger grade
- Balanced strength and formability
- Seawater and brine duty
Grade 7
- Palladium added
- Better in reducing media
- Chloride-heavy service
Grade 9
- Ti-3Al-2.5V
- 620 MPa min tensile
- Lighter walls possible
Grade 12
- Ti-0.3Mo-0.8Ni
- Resists crevice attack
- Hot chloride duty
Grade 5 Enquiry
- ASTM B338 Titanium Grade 5 Tubing? Ti-6Al-4V is not among B338 grades
- Tell us the duty
- We confirm the right standard before quoting
Monthly Delivery of ASTM B338 Tube in Below Countries
| Export to | Continent | Shipping time |
|---|---|---|
 Singapore |
Asia | 8 Days |
 Mexico |
North America | 45 Days |
 South Africa |
Africa | 25-30 Days |
| Kenya |
Africa | 19 Days |
ASTM B338 UNS R50400 Welded Tubes Plain End & Beveled End Options
State your end finish at enquiry. Bevel angle on drawing.
Plain End
Beveled End
Deburred Bore
Plastic-Capped Ends
Testing Methods for ASTM B338 Tubes
Hydrostatic and extra checks can be added at order stage.
Chemical Analysis
Heat analysis for N, C, H, Fe, O and alloy elements
Tension Test
Tensile, yield and elongation against the grade
Flattening Test
Confirms ductility of the tube wall
Flaring Test
Checks the tube end for exchanger fitting
Eddy Current / Ultrasonic
Non-destructive check on tube length
Visual & Dimensional
OD, wall and length inspection
ASTM B338 Tube vs 316L Tube
316L Stainless Tube
- Density about 8.0 g/cm³
- Min yield 170 MPa (A213 / A269)
- Chloride pitting is a real risk
- Lower upfront cost
ASTM B338 Tube
- Density 4.51 g/cm³, far lighter
- Grade 2 min yield 275 MPa
- Built for chloride and brine duty
- Longer life in geothermal loops
Applications of ASTM B338 Seamless Tube
Condensers & Heat Exchangers
Plumbing & Sanitary Fittings
Marine & Shipboard Piping
Radiator & Automotive Cooling
Musical Instrument Manufacturing
Architectural & Décor Hardware
Refrigeration & AC Components
Electrical Terminal & Ferrule Parts
Where ASME SB338 Polished Tube Are Used?
B338 is written for condensers, evaporators and heat exchangers. Geothermal brine loops are a natural fit.
Geothermal Heat Exchangers
Surface Condensers
Evaporators
Chemical Plant Exchangers
Desalination Units
Power Plant Condensers
Offshore Seawater Cooling
Process Heat Recovery
ASTM B338 Round Tube Test Certificate Supplied With Every Lot
Mill Test Certificate With Every Shipment
Each lot of ASTM B338 Tubing carries a heat-traceable certificate. Need an independent inspector? Ask for 3.2.
Export Documentation for B338 Tubing
Clean paperwork keeps your clearance quick.
Mill Test Certificate
EN 10204 3.1 with heat number
Standard
Third-Party Inspection Report
EN 10204 3.2 with your nominated inspector
On Request
Commercial Invoice
Shows HS code for customs
Standard
Packing List
Bundle, weight and marking details
Standard
Certificate of Origin
For export clearance
Standard
Ready To Order ASTM B338 Tube For Your Exchanger?Share your list. We reply with availability and delivery.
ASTM B338 Tube Price: What Moves Your Quote
Get Today’s ASTM B338 Tube PriceTitanium sponge and alloy costs move often. Share grade, OD, wall and metres for a firm quote.
Packing & Marking for Export
End Caps
Plastic caps protect plain and beveled ends
Clean Wrap
Tubes wrapped to keep the surface free of iron contact
Wooden Case or Pallet
Sea-worthy for container shipment
Marked Per Tube
OD, grade, heat number, wall and length
Weekly Delivery of ASTM B338 Tube in Below Countries
| 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 |
Frequently Asked Questions
What is the ASTM B338 tube price?
It depends on grade, OD, wall, condition and quantity. Send your list on WhatsApp for a current quote.
What ASTM B338 tube dimensions do you supply?
OD from 12.7 mm to 50.8 mm with plain or beveled ends. Wall thickness is made to your order.
Which grades does ASTM B338 cover?
It lists 28 grades, including Grade 1, 2, 2H, 3, 7, 9, 11, 12 and others.
Is Grade 5 covered by B338?
No. Ti-6Al-4V is not in the B338 grade list. Tell us your duty and we confirm the right standard before we quote.
What does the H in Grade 2H mean?
It is Grade 2 with a higher guaranteed minimum tensile strength of 58 ksi [400 MPa], aimed at pressure-vessel use.
Can you supply a 3.2 certificate?
Yes. We issue EN 10204 3.1 as standard and arrange 3.2 with your nominated inspector on request.
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