Gr.B steel plate/pipes specification covers seamless and welded steel line pipe.Gr.B steel plate/pipes sincludes standard-weight and extra-strong threaded line pipe. Gr.B steel plate/pipes includes standard-weight and extra-strong threaded line pipe; and standard-weight plain-end, regular-weight plain-end, special plain-end, extra-strong plain-end, special plain-end, extra-strong plain-end pipe; as as well as bell and spigot and through-the-flow line(TFL) pipe.
Gr.B steel plate/pipes is to provide standards for pipe suitable for use in conveying gas, water, and oil in both the oil and natural gas industries.
Gr.B API5L Material#1.0457 |
Comparison of steel grades | |
DIN 17172 | StE240.7 | |
EN10208-2 | L245NB |
Chemical analysis -% by mass*
Grades | Material number | C max |
Si max | Mn. mix |
P max |
S max |
Gr.B | 1.0457 | 0.17 | 0.45 | 0.4 | 0.04 | 0.035 |
Mechanical properties
Grade | Permissible yield point ratio |
Yield Strength MPa(min) |
Tensile Strength MPa |
Elongation % (min) |
Gr.B | ≤ 0.85 | 240 | 370 - 490 | 24 |
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