Acceptable manufacturing routes for PSL 2 pipe
發(fā)布時(shí)間：2011.11.17 新聞來源：直縫鋼管_大口徑直縫鋼管_厚壁鋼管_高頻焊接鋼管-河北美德鋼管制造有限公司 瀏覽次數(shù)：
Acceptable manufacturing routes for PSL 2 pipe
Table 3
| Type of pipe | Starting material | Pipe forming | Pipe heat treatment | Delivery condition |
| SMLS | lngot, bloom or billet | As-rolled | -- | R |
| Normalizing forming | -- | N | ||
| Hot forming | Normalizing | N | ||
| Quenching and tempering | Q | |||
| Hot forming and cold finishing | Normalizing | N | ||
| Quenching and tempering | Q | |||
| HFW | Normalizing-rolled strip | Cold forming | Heat treatinga of weld area only | N |
| Thermomechanical-rolled strip | Cold forming | Heat treatinga of weld area only | M | |
| Heat treatinga of weld area and stress relieving of entire pipe | M | |||
| Hot-rolled strip | Cold forming | Normalizing | N | |
| Quenching and tempering | Q | |||
| Cold forming followed by hot reducing under controlled temperature resulting in a normalized condition | -- | N | ||
| Cold forming followed by thermomechanical forming of pipe | -- | M | ||
| SAW or COW pipe | Normalized or normalizing rolled strip or plate | Cold forming | -- | N |
| As-rolled, thermomechanical-rolled, normalizing-rolled or normalized | Cold forming | Normalizing | N | |
| Thermomechanical-rolled strip or plate | Cold forming | -- | M | |
| Quenched and tempered plate | Cold forming | -- | Q | |
| As-rolled, thermomechanical-rolled, normalizing-rolled or normalized strip or plate | Cold forming | Quenching and tempering | Q | |
| As-rolled, thermomechanical-rolled, normalizing-rolled or normalized strip or plate | Normalizing forming | -- | N | |
|
a See 8.8 For applicable heat treatments. | ||||
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