GB-T14976 0Cr25Ni20 Stainless Steel Seamless Pipe
GB-T14976 0Cr25Ni20 Stainless Steel Pipe Used in mechanical structures, fluid pipes, boiler superheaters, heat exchangers, condensers, catalytic tubes, etc.
Description
GB-T14976 0Cr25Ni20 Stainless Steel Seamless Pipe
Standard:GB-T14976
GB-T14976 0Cr25Ni20 Stainless Steel Pipe Used in mechanical structures, fluid pipes, boiler superheaters, heat exchangers, condensers, catalytic tubes, etc.
GB-T14976 0Cr25Ni20 Stainless Steel Seamless Pipe Quick Details
Product Name：Stainless Seamless Steel Pipe
Company Name: beite steel pipe( China)
Outside Diameter：21mm——219mm
Wall thickness：3mm——15mm
Length：Hot rolled steel pipe: 2 000 mm~12 000 mm;Cold drawn steel pipe: 1 000 mm to 10 500 mm.
Manufacture
Steel pipes are divided into two categories according to product processing methods.
The categories and codes are: hot rolled steel pipes (WH) and cold drawn steel pipes (WC).
Chemical composition of GB-T14976 0Cr25Ni20
| Standard | Grade | Chemical composition | ||||||
| C | Si | Mn | P | S | Ni | Cr | ||
| ≤ | ||||||||
| GB/T14976 | 0Cr25Ni20 | 0.08 | 1.00 | 2.00 | 0.035 | 0.30 | 19.00～22.00 | 24.00～26.00 |
Mechanical properties of GB-T14976 0Cr25Ni20
|
Standard
|
Grade |
Tensile strength(MPa) |
Yield Strength(MPa) |
Elongation(%) |
|
≥ |
||||
|
GB/T14976 |
0Cr25Ni20 |
520 |
205 |
35 |
Dimension tolerance
Outer diameter and wall thickness tolerance of GB-T14976 0Cr25Ni20 Stainless Steel Seamless Pipe
| Hot rolled steel pipe | Cold drawn steel pipe | ||||||
| Size/mm | Tolerance /mm | Size /mm | Tolerance /mm | ||||
| PA | PC | PA | PC | ||||
| OD | 68 ≤ OD ≤ 159 | ± 1.25 | ± 1 | OD | 6 ≤ OD < 10 | ± 0.20 | ± 0.15 |
| 10 ≤ OD ≤ 30 | ± 0.30 | ± 0.20 | |||||
| 159± 1.530± 0.40± 0.30 | |||||||
| OD>5 | ± 0.9% | 0.8% | |||||
| ±WT | <15 | +15 -12.5 |
± 12.5 | WT | ≤ 3 | ± 14% | +12% -10% |
| ≥ 15 | +20 -15 |
>3 | +12% -10% |
± 10% | |||
Items of Testing
Hydraulic test:
The steel pipe shall be hydraulically tested one by one.
Flattening test:
Steel tubes with a wall thickness of not more than 10 mm shall be subjected to a flattening test
Flaring test:
A steel pipe having a wall thickness of less than or equal to 10 mm can be subjected to a flare test.
Intergranular corrosion test:
Austenitic and austenitic-ferritic steel tubes can be tested for intergranular corrosion.