1. Core Material Characteristics
| Items | P235TR2 |
|---|---|
| Steel Type | Non-alloy carbon structural steel (TR2 indicates special material for welded pipes) |
| Yield Strength | ≥235 MPa("P235" naming basis) |
| Chemical composition | C≤0.16%, Mn≤0.35%, P≤0.025%, S≤0.020% |
| Carbon equivalent Ceq | ≤0.36%(Optimize welding performance) |
2. Main application scenarios
Low-pressure fluid transportation
Water/gas pipeline system (design pressure ≤16bar)
Heating, ventilation and air conditioning (HVAC) pipelines
Building structure support
Non-load-bearing structural parts such as factory frames and roof trusses
Need to be used in outdoor environments with anti-corrosion coatings
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3. Process and restrictions
Manufacturing standard: Execute EN 10217-1 welded pipe specification
Cross-section form: Mainly circular welded pipe (DN15-DN2000)
Temperature limit: Long-term service temperature ≤350℃
Welding requirements: Conventional arc welding can be used for thin-walled pipes (δ≤8mm)
