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Alloy High Pressure Seamless Steel ASTM A213 Grade T11 T12 Tubing / Pipe
| ASTM A213(ASME SA213) | |
| Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel oiler, Superheater,and Heat-Exchanger Tubes | |
| Application: | For manufacturing wall panel,economizer,superheater and steam pipeline of boilers |
| Size(mm): | O.D.: 6.0~76.0 W.T.: 1~10 L: max 12000 |
Grade and Chemical Composition (%)
| Grade | C | Mn | P≤ | S≤ | Si | Cr | Mo |
| T11 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 0.50-1.00 | 1.00-1.50 |
| T12 | 0.05-0.15 | 0.30-0.61 | 0.025 | 0.025 | ≤0.50 | 0.80-1.25 | 0.44-0.65 |
| T13 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤0.50 | 1.90-2.60 | 0.87-1.13 |
Mechanical Properties(MPa):
| Grade | Tensile Point | Yield Point |
| T11 | ≥415 | ≥205 |
| T12 | ≥415 | ≥220 |
| T13 | ≥415 | ≥205 |
| Outside Diameter | OD Tolerance | WT Tolerance | Ovality Tolerance | Cut Length Tolerance |
| OD≤ 12, 7 mm | ± 0, 13 mm | ± 15 % | – | + 3, 18 mm, – 0 mm |
| 12, 7 mm < OD ≤ 38, 1 mm | ± 0, 13 mm | ± 10 % | max, 1, 65 mm | + 3, 18 mm, – 0 mm |
| 38, 1 mm < OD ≤ 88, 9 mm | ± 0, 25 mm | ± 10 % | max, 2, 41 mm | + 4, 76 mm, – 0 mm |
Internally Rifled Boiler tube (82.5MM*12.7MM /14Ribs)
