Items |
Pipelines |
Metallographic structure |
Figures |
Hardness values |
1# |
P1603-4 |
Austenite plus precipitated phases, the precipitated phases are granular, banded, and chain-like. |
Figure 2 |
150, 154 and 154 |
2# |
P10615-4 |
Austenite plus precipitated phases, the precipitated phases are granular, banded, and chain-like. |
|
141, 144 and 145 |
3# |
P10702-1 |
Austenite plus precipitated phases, the precipitated phases are granular, banded, and chain-like. |
|
150, 145 and 141 |
4# |
P10705-2 |
Austenite plus precipitated phase, the precipitated phase is granular. |
|
156, 158 and 154 |
5# |
P10705-2 |
Austenite plus precipitated phase, the precipitated phase is granular. |
|
143, 145 and 146 |
6# |
P10712-3 |
Austenite plus precipitated phase, the precipitated phase is granular. |
Figure 3 |
149, 150 and 160 |
7# |
P10712-2 |
Austenite plus precipitated phase, the precipitated phase is granular. |
|
135, 139 and 140 |
8# |
P10712 (elbows) |
Austenite plus precipitated phase, the precipitated phase is granular. |
|
130, 125 and 137 |
9# |
P10611 |
Austenite plus precipitated phase, the precipitated phase is granular. |
|
160, 185 and 182 |
10# |
P20412-1 |
Austenite plus precipitated phase, the precipitated phase is granular. |
|
141, 145 and 150 |
11# |
P10611-1 |
Austenite plus precipitated phase, the precipitates are distributed in granular, banded, and chain shapes, and there are suspected cracks around the precipitates. |
Figure 4 |
141, 150 and 139 |