The range of 12Cr1MoVG pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.
Chemical component:
Grade | Chemical component(mass fraction)/% | |||||||
C | Si | Mn | Cr | Mo | V | P | S | |
Max | ||||||||
12Cr1MoVG | 0.08-0.15 | 0.17-0.37 | 0.40-0.70 | 0.90-1.20 | 0.25-0.35 | 0.15-0.30 | 0.025 | 0.010 |
Mechanical property:
Grade | Tensile property | impact absorbed energy | ||||
Strength of extension MPa | REL | Percentage elongation after fracture A/% | Lengthways | Crosswise | ||
Lengthways | Crosswise | |||||
No less than | ||||||
12Cr1MoVG | 470-640 | 255 | 21 | 19 | 40 | 27 |
Length: 5800mm; 6000mm; 6096mm; 7315mm; 11800mm; 12000mm; and so on.
Max length: 16000mm, also U bending can be offered.
Test:
- Flattening Test (D﹥22mm-400mm and S≤40mm);
- Bending Test (D﹥400mm or S﹥40mm);
- Flaring Test (D≤76mm and S≤8mm);
- Macro test;
- Nonmetallic inclusion;
- Grain size;
- micro structure;
- Decarburized Layer;
- Inter-granular corrosion test;
- Surface quality inspection;
- Nondestructive testing.
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