API 5L Gr X46 Spiral Pipe description
The "X46" in X46 spiral welded pipe represents the yield strength grade of the steel used, with a specific value of approximately 315 MPa. This steel ensures strength while also possessing certain toughness and ductility, making the pipe less prone to brittle fracture under pressure. X46 steel is typically a low-alloy high-strength steel containing elements such as manganese, silicon, nickel, and chromium. The addition of these alloy elements helps enhance the overall performance of the steel pipe, including corrosion resistance, oxidation resistance, and weldability.
API 5L SAW Pipe Specification
API 5L X46 Welded Pipe Tensile Strength Tensile Strength
API 5L X46 Chemical Composition
Test and Inspection
| Positive Material Identification – PMI Testing | Hydrostatic Test |
| Chemical Analysis – Spectro Analysis | Hydrogen-Induced Cracking (HIC) Test |
| Mechanical Testing Such as Tensile, Elongation, Reduction of Area | Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177 |
| Micro Test | Radiography Test |
| Macro Test | Dye Penetrant Test (DP Test) |
| Hardness Test | Ultra Sonic Test (UT) |
| Pitting Resistance Test | Eddy Current Testing |
| Intergranular Corrosion (IGC) Test | Impact Test |
| Flaring Test | Bend Test |
| Flattening Test |
