Specifications
For manufacture water wall panel, economizer, reheater, superheater and pipeline of boilers.
GB5310 Grade 20# Boiler tube
For manufacture water wall panel, economizer, reheater, superheater and pipeline of boilers.
Specifications as belowing
Pipe Category | Pipe Size mm | Allowed Tolerances | |||
|
| Standard | Higher | ||
Hot Rolled | OD | ≤ 159 | ± 1.0% (± 0.5mm ) | ± 0.75% (± 0.3mm ) | |
|
| > 159 | ± 1.0% | ± 0.90% | |
| WT | < 3.5 | + 15% (+ 0.48mm - 10% - 0.32mm ) | ± 10% (± 0.2mm ) | |
|
| 3.5~20 | +15% | ±10% | |
|
| >20 | D < 219 | ± 10% | ±7.5% |
|
|
| D ≥ 219 | +12.5% | ±10% |
materials
packing:
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Ms .Magi