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ASTM A213 T91 T12 T11 Alloy Tube
ASTM A213 T91 T12 T11 Alloy Tube
ASTM A213 T91 T12 T11 Alloy Tube
ASTM A213 T91 T12 T11 Alloy Tube
ASTM A213 T91 T12 T11 Alloy Tube
ASTM A213 T91 T12 T11 Alloy Tube
ASTM A213 T91 T12 T11 Alloy Tube
ASTM A213 T91 T12 T11 Alloy Tube

ASTM A213 T91 T12 T11 Alloy Tube

ASTM A213 T91, T12, T11 alloy pipe is a ferritic and austenitic alloy steel seamless steel pipe used in boilers, superheaters and heat exchangers.
standard:ASTM
Surface :1. Galvanized 2. Black and Color Painting
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introduction
ASTM A213 T91, T12, T11 alloy pipe is a ferritic and austenitic alloy steel seamless steel pipe used in boilers, superheaters and heat exchangers.
T91 alloy boiler tubes are mainly used for heating surface tubes of low and medium pressure boilers (working pressure is generally not greater than 5.88Mpa, working temperature is below 450℃); used in high-pressure boilers (working pressure is generally above 9.8Mpa, working temperature is below 450℃ ~650℃ heating surface pipes, economizers, superheaters, reheaters, petrochemical industry pipes, etc.
Technical Data

ASTM A213/ASME SA213 pipe Chemical Composition and Mechanical Properties

Grade Chemical Composition%
C Si Mn P, S Max Cr Mo Ni Max V Al Max
T11 0.05~0.15 0.50~1.00 0.30~0.60 0.025 1.00~1.50 0.44~0.65 - - -
T12 0.05~0.15 Max 0.5 0.30~0.61 0.025 0.80~1.25 0.44~0.65 - - -
T91 0.07~0.14 0.20~0.50 0.30~0.60 0.02 8.0~9.5 0.85~1.05 0.4 0.18~0.25 0.015
Grade Chemical Composition% Mechanical Properties
W B Nb N T. S Y. P Elongation Hardness
T11 - - - - ≥ 415MPa ≥ 205MPa ≥ 30% 163HBW(85HRB)
T12 - - - - ≥ 415MPa ≥ 220MPa ≥ 30% 163HBW(85HRB)
T91 - - 0.06~0.10 0.03~0.07 ≥ 585MPa ≥ 415MPa ≥ 20% 250HBW(25HRB)

ASME SA213  Alloy Steel Seamless Tube Dimensions Tolerance

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
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