TOBO STEEL GROUP CHINA
TOBO GROUP TOBO International Trading(Shanghia)Co.,Ltd Tianda Oil Pipe Co., Ltd TOBO Pipeline Equipment Co.,Ltd TPCO & TISCO Pipe(Tianjin)Co.,Ltd.
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ASTM A335 (Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service)
ASTM A335 P1, P2, P5, P9, P12, P11, P22, P91
ASTM 213(Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes)
ASTM A213 T1, T2, T11, T5, T9, T22, T23, T91, T92
Alloy Steel Seamless Tubes ASME SA213 T1,T11, T12, T2, T22, T23, T5, T9, T91, T92
Alloy Steel Seamless Tubes ASTM A213 T1, T11, T12 / ASTM A335 P1, P2, P5 / ASTM A213 T1.
Alloy Steel Seamless Tubes ASME SA213-SA213M-2010 T1, T11, T12
Alloy steel tubes is a kind of steel alloyed tube with other elements in amounts
of between 1 and 50% by weight to improve its mechanical properties.Alloying
elements are added to achieve certain properties in the material. As a guideline,
alloying elements are added in lower percentages (less than 5%) to increase
strength or harden ability or in larger percentages (over 5%) to achieve special
properties, such as corrosion resistance or extreme temperature stability.
Main Materials:
ASTM A335 (Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service)
ASTM A335 P1, P2, P5, P9, P12, P11, P22, P91
ASTM 213(Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes)
ASTM A213 T1, T2, T11, T5, T9, T22, T23, T91, T92
ASTM A335 Seamless Ferritic Alloy Steel Pipe For High Temperature
| Mechanical Properties | ||||||
| Grade | Tensile strength(MPa) | Yield strength(MPa) | Elongation(%) | Impact energy(J) | Hardness | |
| P11 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 163HB | |
| P12 | ≥ 415 | ≥ 220 | ≥ 22 | ≥ 35 | ≤ 163HB | |
| P22 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 163HB | |
| P5 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 187HB | |
| P91 | 585~760 | ≥ 415 | ≥ 20 | ≥ 35 | ≤ 250HB | |
| P92 | ≥ 620 | ≥ 440 | ≥ 20 | ≥ 35 | 250HB | |
