| O.D (mm) | 3.0-4.0 | 4.01-6.00 | 6.01-8.00 | 8.01-10.0 | 10.01-12.7 | 12.71-19.05 | 19.05-25.4 |
| |
| W.T (mm) |
| 0.30-0.40 | √ | √ | √ | | | | |
| 0.41-0.50 | √ | √ | √ | √ | | | |
| 0.51-0.60 | √ | √ | √ | √ | √ | | |
| 0.61-0.70 | √ | √ | √ | √ | √ | √ | |
| 0.71-1.00 | √ | √ | √ | √ | √ | √ | √ |
| 1.01-1.20 | | √ | √ | √ | √ | √ | √ |
| 1.21-1.50 | | | | √ | √ | √ | √ |
| 1.51-2.0 | | | | | √ | √ | √ |
Welding technology of stainless steel coil pipe parameters:
1 Size range: diameter 3MM-25.4MM
2 Wall thicknesses: 0.3MM-2.0MM
3 Coil inner hole size: 500MM-1500MM (can be adjusted according to customer requirements)
4 Coil height: 200MM-400MM (can be adjusted according to customer requirements)
5 The maximum length of coil tube: 3MM*1MM, up to 3000 meters; 8MM*0.5MM,up to 2000 meters; 9.53MM*0.89MM, up to 1000 meters
6 General delivery length: 200 m -1000 M
The physical properties of stainless steel coiled pipe bright annealing state:
1 Extension rate: >55%
2. Surface hardness: <170 HV
3. Tensile strength: >550 N/MM2
4. Yield strength: >195 N/NM2
5 Bending angle: >90 degrees, the bending radius of > 2* outer diameter
6. Pressure performance: in the case of 8*0.5*C, the working pressure shall benot less than 60BAR
| Chemical composition for 304 stainless steel alloys |
| % | 304 | 304L | 304H |
| C | 0.0 - 0.07 | 0.0 - 0.03 | 0.04 - 0.08 |
| Mn | 0.0 - 2.0 | 0.0 - 2.00 | 0.0 - 2.0 |
| Si | 0.0 - 1.00 | 0.0 - 1.00 | 0.0 - 1.0 |
| P | 0.0 - 0.05 | 0.0 - 0.05 | 0.0 - 0.04 |
| S | 0.0 - 0.03 | 0.0 - 0.02 | 0.0 - 0.02 |
| Cr | 17.50 - 19.50 | 17.50 - 19.50 | 17.00 - 19.00 |
| Ni | 8.00 - 10.50 | 8.00 - 10.50 | 8.00 - 11.00 |
| Fe | Balance | Balance | Balance |
| N | 0.0-0.11 | 0.0-0.11 | 0.0 - 0.10 |
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| Mechanical Properties of Stainless Steel 304 | | | |
| | | | |
| Mechanical properties for 304 stainless steel alloys - sheet up to 8 mm thick |
| | | | |
| Grade | 304 | 304L | 304H |
| Tensile Strength (MPa) | 540 - 750 | 520 - 700 | - |
| Proof Stress (MPa) | 230 Min | 220 Min | - |
| Elongation A50 mm | 45 Min % | 45 Min % | - |
