Specification | OD: 219-2032mm WT: 5.0-20mm | ||
Technique | SSAW (spiral submerged arc welded) | ||
Material | St37 St52 Grade B X46 X46 X52 Q235 Q355 S235 S355 | ||
Surface treatment | External: 3PE, bitumen, epoxy powder Internal: Epoxy, bitumen,
cement | ||
DNT testing | Hydrostatic test UT test RT test | ||
End treatment | Bevel | ||
Certificate | API 5L |
Anti-Corrosion Index

External 3PE Executive Standard DIN30670 | ||||
DN | Epoxy coating/um | Adhesive coating/um | Minimum thickness for PE coating(mm) | |
Common | Enhanced | |||
DN≤100 | ≥120 | ≥170 | 1.8 | 2.5 |
100<DN≤250 | 2.0 | 2.7 | ||
250<DN<500 | 2.2 | 2.9 | ||
500≤DN<800 | 2.5 | 3.2 | ||
DN≥800 | 3.0 | 3.7 |
External Single-layer Epoxy Executive SY/T0315 | |||
Number | Coating level | Minimum thickness(um) | |
1 | Normal level | 300 | |
2 | Reinforce level | 400 |
Internal FBE Executive SY/T0442 | |||
Pipeline operation requirements | Internal coating thickness(um) | ||
Drap reduction pipeline | ≥50 | ||
Anti-corrosion pipeline | Normal | ≥250 | |
Reinforce | ≥350 |