Joho Steel Co., Ltd
JOHO STEEL CO.,LTD, founded in 1988, is a steel group which has integrated steel production, processing and trading into one. We specializes in manufacturing carbon seamless steel pipes, boiler tube
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A213T91,T2,T11,T22,A335P12,High Pressure Multi Rifled Boiler Seamless Alloy Tube
Product Description: This product is one kind of endophragm processes the spiral line the seamless steel pipe. Main application in on capacity utility boiler's water cooling wall. Usually with the fluorescent tube which uses compares, it can maintain the nuclear ebullition condition under the high fever load operating condition, thus avoids sending the filming condition ebullition, prevents the pipe to burn out, lengthens the pipe service life.
| GRADE | C % | MN % | SI % | S% | P% | Cr % | Mo% |
| SA335 P2 | 0.10-0.20 | 0.30-0.61 | 0.10-0.30 | 0.025 | 0.025 | 0.50-0.81 | 0.44-0.65 |
| SA335 P12 | 0.05-0.15 | 0.30-0.61 | 0.50 | 0.025 | 0.025 | 0.80-1.25 | 0.44-0.65 |
| SA335 P11 | 0.05-0.15 | 0.30-0.60 |
0.50-1.00 | 0.025 | 0.025 | 1.00-1.50 | 0.44-0.65 |
| SA335 P22 | 0.05-0.15 | 0.30-0.60 | 0.50 | 0.025 | 0.025 | 1.90-2.60 | 0.87-1.13 |
| 12Cr1MoVG | 0.08-0.15 | 0.40-0.70 | 0.17-0.37 | 0.030 | 0.030 | 0.90-1.20 | 0.25-0.3 |
| GRADE | Tensile strength Mpa | Yield strength Mpa | Elongation % |
| SA335P2 | ≥380 | ≥205 | ≥20 |
| SA335P12 | ≥415 | ≥220 | ≥20 |
| SA335P11 | ≥415 | ≥205 | ≥20 |
| SA338P22 | ≥415 | ≥205 | ≥20 |
| 12Cr1MoVG | ≥470 | ≥255 | ≥21 |
