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JIS G3461 Carbon Steel Tube For Boilers And Heat Exchangers
Standard: JIS G3461
Main steel grades: STB340,STB410,STB510.
Application: JIS G3461 Carbon Steel Tubes is mainly used for exchanging heat on the inside and outside of the tube, such as water tubes, smoke tubes, superheater tubes, air preheater tubes, etc.Its application fields are: boiler tubes, heat exchanger tubes, condenser tubes, catalyzer tubes, etc. It can also be used in chemical and petroleum industries, But it can't be used for low temperature service.
Chemical Properties& Main Mechanical Properties:
| Standard | Steel Grade | Chemical Coposition | |||||||||
| C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V | ||
| JIS G3461 | STB340 | ≤0.18 | ≤0.3 | 0.30-0.60 | ≤0.035 | ≤0.035 | / | / | / | / | / |
| STB410 | ≤0.32 | ≤0.35 | 0.30-0.80 | ≤0.035 | ≤0.035 | / | / | / | / | / | |
| JIS G3462 | STBA22 | ≤0.15 | ≤0.50 | 0.30-0.60 | ≤0.035 | ≤0.035 | 0.80-1.25 | 0.45-0.65 | / | / | / |
| STBA23 | ≤0.15 | 0.50-1.00 | 0.30-0.60 | ≤0.030 | ≤0.030 | 1.00-1.50 | 0.45-0.65 | / | / | / | |
| Standard | Steel Grade | Tensile Strength(MPa) | Yield Point(MPa) | Elongation(%) |
| JIS G3461 | STB340 | ≥340 | ≥175 | ≥35 |
| STB410 | ≥410 | ≥255 | ≥25 | |
| JIS G3462 | STBA22 | ≥415 | ≥210 | ≥30 |
| STBA23 | ≥415 | ≥210 | ≥30 |
Mark: As required.
Pipe end: Plain end, or as per customers' special request.
Finishing: Varnished with anti-rust paint, oil.
Heat treatment: Annealing, Tempering, Normalizing etc.
Packing: Exporting package/wooden box /as requirement.
