Haihao Group recently conducted a thorough quality inspection for the 254SMo stainless steel pipes ordered by our Indian client. The client appointed a third-party inspection company to ensure the pipes meet all the required specifications, including dimensional accuracy, chemical composition, and mechanical properties. Below is a detailed summary of the inspection process and results, demonstrating our commitment to quality and compliance with international standards.
254SMo stainless steel pipes
1.Dimensional Inspection
The inspection focused on verifying the outer diameter, wall thickness, and length of the pipes to ensure they met the specified dimensions. The following results were recorded:
Outer Diameter: 1 inches (Tolerance: ±0.5 mm) — Measured values ranged between 24.9 mm and 25.9 mm, which are within the acceptable range.
Wall Thickness: 2 mm (Tolerance: ±0.1 mm) — Measured values were consistently between 1.9 mm and 2.1 mm.
Length: 6 meters — All pipes matched the required length specification without deviation.
The pipes passed all dimensional checks, meeting the precise standards expected for high-performance applications.
2.Chemical Composition Analysis
The chemical composition of the 254SMo pipes was tested to ensure it aligned with the required specifications. The analysis provided the following average values:
| Carbon (C) | 0.018% (Requirement: ≤0.02%) |
| Silicon (Si) | 0.65% (Requirement: ≤0.70%) |
| Manganese (Mn) | 0.95% (Requirement: ≤1.00%) |
| Phosphorus (P) | 0.025% (Requirement: ≤0.03%) |
| Sulfur (S) | 0.009% (Requirement: ≤0.01%) |
| Chromium (Cr) | 20.0% (Requirement: 19.5%-20.5%) |
| Molybdenum (Mo) | 6.5% (Requirement: 6%-7%) |
| Nickel (Ni) | 17.7% (Requirement: 17.5%-18.0%) |
| Copper (Cu) | 0.7% (Requirement: 0.5%-1.0%) |
| Nitrogen (N) | 0.22% (Requirement: 0.18%-0.25%) |
The chemical composition of all pipes was confirmed to be within the specified limits, ensuring the material’s high resistance to corrosion and its suitability for use in aggressive environments.
254SMo stainless steel pipe
3.Mechanical Properties Testing
To verify the mechanical properties, the third-party inspection company conducted tensile and yield strength tests:
| Tensile Strength | 815 MPa (Requirement: ≥800 MPa) |
| Yield Strength | 610 MPa (Requirement: ≥600 MPa) |
| Elongation | 35% (Requirement: ≥30%) |
The test results demonstrate that the pipes exceed the required mechanical performance, confirming their ability to withstand high pressures and temperatures in demanding applications.
The 254SMo stainless steel pipes supplied to our Indian client have passed all inspection parameters, including dimensional accuracy, chemical composition, and mechanical properties. The pipes are fully compliant with the required specifications and demonstrate Haihao Group’s commitment to quality and precision.
Haihao Group supports third-party inspections to validate our products and provide customers with confidence in their investment. We ensure that all our products meet or exceed international standards, reaffirming our position as a trusted supplier in the industry.
For more information about our quality assurance processes or to inquire about our products, please feel free to contact us.
