API Grade -
5CT or 5D Yield Strength - Minimum Yield Strength - Maximum Tensile Strength - Minimum Rockwell C Hardness (est.)
H-40 40,000 psi 80,000 psi 60,000 psi 70-87 HRB
J-55 55,000 80,000 75,000 0-15
K-55 55,000 80,000 95,000 14-25
S-80 55,000 95,000 95,000 14-22
C-75 75,000 90,000 95,000 14-26
L-80 80,000 95,000 95,000 14-23
N-80 80,000 110,000 100,000 16-25
S-95 95,000 110,000 110,000 22-31
P-110 110,000 140,000 125,000 27-35
OD | W/T | inch | mm | inch | mm | 4-1/2 | 114.3 | 0.138-0.250 | 3.51-6.35 | 5 | 127 | 0.138-0.296 | 3.51-7.5 | 5-1/2 | 139.7 | 0.138-0.311 | 3.51-7.90 | 7 | 177.8 | 0.138-0.354 | 3.51-8.99 | 8-5/8 | 219.1 | 0.138-0.500 | 3.51-12.7 | 9-5/8 | 244.5 | 0.156-0.500 | 3.51-12.7 | 13-3/8 | 339.7 | 0.203-0.592 | 4.78-15.04 | 16 | 406.4 | 0.375-0.625 | 9.52-15.88 | 18-5/8 | 473.0 | 0.375-0.656 | 9.52-16.13 | 20 | 508.0 | 0.375-0.656 | 9.52-16.13 |
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第 5 年
