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46'' Alloy Steel Seamless Tubes 1168mm SCH XXS For High Pressure Boiler
ASME SA 335 Grade P22 Alloy Steel Seamless Pipes are Carbon Steel Pipes with subsequent addition of chromium, molybdenum and sometimes vanadium are known as chrome moly Pipes. ASME Specification alloy steel Pipes are used for high temperature service applications. Seamless Alloy Steel Pipes according to ASME SA 335 Grade P22 are reheated and furnished in full annlealed,isothermal annealed or normalised quenched and tempered condition. ASME SA 335 Grade P22 Alloy Steel Seamless Pipes have a typical chemistry with additions of 1.90-2.60 Chromium and 0.87-1.13 Molybdenum. Bearing minimum tensile strength of 415 Mpa ASME SA 335 Grade P22 Pipes have a minimum yield strength of 205 Mpa.
1. Standards
ASTM A106 ——Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service
ASTM A335 ——Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
2. Application
For the high-pressure boiler and steam pipes, and the petrochemical industry pipes;
Power plant; Chemical Fertilizer; Petrochemicals; Offshore Oils; Gas Productions; Refineries and etc.
3. Steel pipes No. of main production:
ASTM A335 Grade P5, P9, P11, P12, P22, P91, P92
ASTM A106 Grade B, C
4. Dimensional Tolerance
| Pipe types | OD (mm) | Tolerance | WT (mm) | Tolerance |
| High Pressure Boiler Tube | 219~457 | ±1.0％ | ≤20 | -10% ~ +12.5% |
| 20~40 | -10% +10% | |||
| 457~1422 | ±0.9％ | ＞40~70 | -7％, +9％ | |
| ＞70~20 | -6％, +8％ |
5. Chemical Composition:
| High Pressure Boiler Tube Chemical Requirements | ||||||||||||
| Standard | Grade | UNS Designation | Composition, % | |||||||||
| C | Mn | P | S | Si | Cr | Mo | Ni | V | Others | |||
| ASTM A335 | P5 | K41545 | 0.15max | 0.30-0.60 | 0.025 | 0.025 | 0.50max | 4.00-6.00 | 0.45-0.65 | ... | ||
| P9 | S50400 | 0.15max | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 | ... | |||
| P11 | K11597 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 | ... | |||
| P12 | K11562 | 0.05-0.15 | 0.30-0.61 | 0.025 | 0.025 | 0.50 max | 0.80-1.25 | 0.44-0.65 | ... | |||
| P22 | K21590 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50 max | 1.90-2.60 | 0.87-1.13 | ... | |||
| P91 | K91560 | 0.08-0.12 | 0.30-0.60 | 0.02 | 0.01 | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 | 0.4 | 0.18-0.25 | N 0.030-0.070 | |
| Al 0.02max | ||||||||||||
| Cb 0.06-0.10 | ||||||||||||
| Ti 0.01 max | ||||||||||||
| Zr 0.01max | ||||||||||||
| P92 | K92460 | 0.07-0.13 | 0.30-0.60 | 0.02 | 0.01 | 0.50 max | 8.50-9.50 | 0.30-0.60 | 0.4 | 0.15-0.25 | N 0.03-0.07 | |
| Al 0.02 max | ||||||||||||
| Cb 0.04-0.09 | ||||||||||||
| W 1.5-2.00 | ||||||||||||
| B 0.001-0.006 | ||||||||||||
| Ti 0.01 max | ||||||||||||
| Zr 0.01 max | ||||||||||||
| ASTM A106 | Grade B | 0.3 | 0.29–1.06 | 0.035 | 0.035 | 0.1 | 0.4 | 0.15 | 0.4 | 0.08 | ||
| Grade C | 0.35 | 0.29–1.06 | 0.035 | 0.035 | 0.1 | 0.4 | 0.15 | 0.4 | 0.08 | |||
6. Mechanical Properties
| Standards | Steel pipes No. | Tensile strength | Yield strength | Elongation | Impact energy | Hardness |
| (Mpa) | (Mpa) | (%) | (J) | |||
| ASTM A335 | P5 | ≥415 | ≥205 | ≥22 | ≥35 | ≤187HB |
| P9 | ≥415 | ≥205 | ≥22 | ≥35 | ||
| P11 | ≥415 | ≥205 | ≥22 | ≥35 | ≤163HB | |
| P12 | ≥415 | ≥220 | ≥22 | ≥35 | ≤163HB | |
| P22 | ≥415 | ≥205 | ≥22 | ≥35 | ≤163HB | |
| P91 | 585～760 | ≥415 | ≥20 | ≥35 | ≤250HB | |
| P92 | ≥620 | ≥440 | ≥20 | ≥35 | ≤250HB | |
| ASTM A106 | Grade B | ≥415 | ≥240 | ≥22 | ≥35 | / |
| Grade C | ≥485 | ≥275 | ≥20 | ≥35 | / |
7. Available Size Range:
| OD | Thickness | ||
| mm | inch | mm | SCH |
| 88.9~1422 | 3''~ 56'' | 2.11~140 | ≥SCH10 |
| *If the steel grades and size you are looking for are not listed above, please contact us for further information. | |||
