1. Standard
National Standard：GB13296-20132. Material Properties
Chemical Composition
| C | Mn | P | S | Si | Cr | Ni | |
| Min | 18 | 8 | |||||
| Max | 0.03 | 2.0 | 0.035 | 0.030 | 1.0 | 20 | 11 |
| Actual value | 0.018 | 0.75 | 0.034 | 0.002 | 0.42 | 18.16 | 8.07 |
Mechanical Properties
| Mechanical Properties |
Tensile Strength MPa |
Yield Strength MPa |
Elongation % |
Grain Size |
| Min | 480 | 175 | 35 | |
| Max | ||||
| Actual value | 697 | 337 | 54 | 7 |
Typical Size
| Size |
Outside Diameter mm |
Permissible Variations in Outside Diametermm |
Wall Thickness mm |
Average Wall Permissible Variations in Wall Thickness |
| 25×2 | 25 | ±0.10 | 2 | 0~+22%S |
Note: the control scope of the standard..：OD：±0.10mm，WT：0~+22%S
3. Typical Application Environment
1）Heat Exchanger
2）The equipment pipes of petrochemical and petroleum
3）Equipment for the paper industry
4）Corrugated expansion pipe
5） Fluid Service
6） Power Station
7) Nuclear Power
8) Aerospace
9) Ships
10) Mechanical Pipe
11) Environmental Protection
12) Nuclear fuel regeneration