JIS G3462 Seamless and welded Alloy steel tube for boiler tube and heat-exchanger
Type: Seamless and welded alloy steel pipes
Application: For water tubes, smoke tubes, superheater tubes, heat-exchanger
Technique: Cold-finished, hot-finished, ERW
Size:
| OD | 15.9-135.8mm |
| WT | 0.5-50mm |
| LENGTH | max12000mm |
Chemical Composition:
| Grade | Chemical Composition % |
| C | Mn | P | S | Si | Cr | Mo |
| STBA12 | 0.10-0.20 | 0.30-0.80 | ≤0.035 | ≤0.035 | 0.10-0.50 | … | 0.45-0.65 |
| STBA13 | 0.15-0.25 | 0.30-0.80 | ≤0.035 | ≤0.035 | 0.10-0.50 | … | 0.45-0.65 |
| STBA20 | 0.10-0.20 | 0.30-0.60 | ≤0.035 | ≤0.035 | 0.10-0.50 | 0.05-0.08 | 0.45-0.65 |
| STBA22 | ≤0.15 | 0.30-0.60 | ≤0.035 | ≤0.035 | ≤0.50 | 0.08-1.25 | 0.45-0.65 |
| STBA23 | ≤0.15 | 0.30-0.60 | ≤0.030 | ≤0.030 | 0.50-1.00 | 1.00-1.50 | 0.45-0.65 |
| STBA24 | ≤0.15 | 0.30-0.60 | ≤0.030 | ≤0.030 | ≤0.50 | 1.90-2.60 | 0.87-1.13 |
| STBA25 | ≤0.15 | 0.30-0.60 | ≤0.030 | ≤0.030 | ≤0.50 | 4.00-6.00 | 0.45-0.65 |
| STBA26 | ≤0.15 | 0.30-0.60 | ≤0.030 | ≤0.030 | 0.25-1.00 | 8.00-10.0 | 0.90-1.10 |
Mechanical proporties:
| Grade | Mechanical Proerties |
| Tensile Strength (Mpa) | Yield Strength(Mpa) | Elongation(%) |
| STBA12 | ≥382 | ≥206 | ≥30 |
| STBA13 | ≥412 | ≥206 | ≥30 |
| STBA20 | ≥412 | ≥206 | ≥30 |
| STBA22 | ≥412 | ≥206 | ≥30 |
| STBA23 | ≥412 | ≥206 | ≥30 |
| STBA24 | ≥412 | ≥206 | ≥30 |
| STBA25 | ≥412 | ≥206 | ≥30 |
| STBA26 | ≥412 | ≥206 | ≥30 |
Manufacture Method:
The tubes shall be manufactured by seamless process, electric resistance welding process, or butt welding process, and those of other grades shall be manufactured by seamless process or electric resistance welding process. The tube shall be as manufactured or as cold-finished condition, or they shall be subjected to appropriate heat treatment.
The tubes shall be practically straight. and the two ends shall be at right angles to the axis of the tube. The tubes shall be free from defects detrimental to practical use.
Higher temperature resistance or capacity corrosion, end up being widely used by petroleum, chemical engineering, boiler, heat exchanger and other power areas. JIS G3462 alloy steel tube is not applicable for heating furnaces and heat exchangers for low temperature service.
Equivalent Steel Grade:
| KS | ASTM | JIS | DIN | BS |
| Grade number | GRADE | Grade number | GRADE | Grade number | GRADE | Grade number | GRADE | Grade number |
| D 3572 | STHA12 | A161
A209 | T1
T1 | G 3462 | STBA12 | 17175 | 15Mo 3 | - |
| STHA13 | A209 | T1a | STBA13 | - | - | - | - |
| STHA20 | A213 | T2 | STBA20 | - | - | - | - |
| STHA22 | A213 | T12 | STBA22 | 17175 | 13Cr Mo 44 | 3059 | S1 620
S2 620
ERW620
CEW620 |
| STHA23 | A199
A200
A213 | T11
T11
T11 | STBA23 | - | - | - | - |
| STHA24 | A199
A200
A213 | T22
T22
T22 | STBA24 | 17175 | 10Cr Mo910 | 3059 | S1 622-440
S2 622-440 |
| STHA25 | A199
A200
A210 | T5
T5
T5 | STBA25 | - | - | - | - |
| STHA26 | A199
A200
A213 | T9
T9
T9 | STBA26 | - | - | - | - |
Heat Treatment:
| Symbol of class | JIS G3462 Heat treatment |
STBA 12
STBA 13 | Low temperature annealing, isothermal annealing, full annealing, normalizing or normalizing followed by tempering |
STBA 20
STBA 22 | Low temperature annealing, isothermal annealing, full annealing, normalizing or normalizing followed by tempering |
STBA 23
STBA 24
STBA 25
STBA 26 | Isothermal annealing, full annealing or normalizing followed by tempering |
Product show:
FAQ
Q: Are you trading company or manufacturer?
A: We are a professional steel pipes materials manufacturer.
Q: How long is your delivery time?
A: Generally it takes 7-14 days if the goods are in stock or 30-60 days if there is no stock, this mainly depends on quantity.
Q: Do you provide free samples?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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JIS G3462 Seamless And Welded Alloy Steel Heat Exchanger Tube Images
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