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Tolerancia en Dimensiones
|
Tipos de tubería |
Tamaño de la tubería(mm) |
Tolerancias |
|
|
Laminado en caliente |
OD |
≤159 |
±1.0% |
|
>159 |
±1.20% |
||
| WT |
≤20 |
±12.5% |
|
|
>20 |
±10.0% |
||
|
Estirado en frío |
OD |
≤30 |
±0.20mm |
|
30-50 |
±0.30mm |
||
|
>50 |
±0.8% |
||
| WT |
≤3 |
+12% -10% |
|
|
>3 |
±10% |
||
Composición química y propiedades mecánicas
| Grado |
Composición química |
Propiedades mecánicas |
|||||||||
|
C |
Mn |
Si |
Cr |
Mo |
Ni |
S | P |
Resistencia a la tracción(Mpa) |
Límite elástico(Mpa) |
Alargamiento(%) |
|
|
10 |
0.07-0.14 |
0.35-0.65 |
0.17-0.37 |
≤0.15 |
- |
≤0.25 |
≤0.035 |
≤0.035 |
330-490 |
≥205 |
≥24 |
| 20 |
0.17-0.24 |
0.35-0.65 |
0.17-0.37 |
≤0.25 |
- |
≤0.25 |
≤0.035 |
≤0.035 |
410-550 |
≥245 |
≥21 |
|
12CrMo |
0.08-0.15 |
0.40-0.70 |
0.17-0.37 |
0.40-0.70 |
0.40-0.55 |
≤0.30 |
≤0.035 |
≤0.035 |
410-560 |
≥205 |
≥21 |
|
15CrMo |
0.12-0.18 |
0.40-0.70 |
0.17-0.37 |
0.80-1.10 |
0.40-0.55 |
≤0.30 |
≤0.035 |
≤0.035 |
440-640 |
≥235 |
≥21 |
|
1Cr2Mo |
≤0.15 |
0.30-0.60 |
0.50-1.00 |
2.15-2.85 |
0.40-0.65 |
- |
≤0.035 |
≤0.035 |
≥390 |
≥175 |
≥22 |
|
1Cr5Mo |
≤0.15 |
≤0.60 |
≤0.60 |
4.00-6.00 |
0.45-0.60 |
≤0.60 |
≤0.035 |
≤0.035 |
≥390 |
≥195 |
≥22 |
Quality is basically no problem.
___Matthew(Netherlands)
Price is good.
___Joshua(Switzerland)
Packing is bad.
___Hudson(Cyprus）
Delivery is according to the contract and not delay.
___Antoine（Israel）
