Table 8 Hardness test results
From: Failure analysis of weld cracking of gas gathering pipeline in dewatering station
Sample | Test point hardness value (HV) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
A pipe section | 152.9 | 154.1 | 154.9 | 154.1 | 151.9 | 154.1 | 154.6 | 160.1 | 159.2 |
B pipe section | 154.6 | 154.6 | 159.3 | 163.5 | 155.9 | 162.8 | 148.3 | 155.6 | 157.9 |
Girth weld | 201.2 | 215.5 | 198.6 | 193.7 | 183.9 | 185.7 | 194.7 | 199.3 | 208.3 |
SYT 0452-2012 | ≤250 | ||||||||