| 1 | Applicable Product Standard | Confirm that the sheet pile is manufactured to the standard specified in the purchase contract. | Common standards include EN 10248-1 and EN 10248-2 for hot-rolled sheet piles, ASTM A572/A572M for applicable structural steel grades, or JIS A 5528 where specified. | Standard designation on the quotation, drawings, inspection plan, and certificate. | 10% |
| 2 | Chemical Composition | Check carbon, manganese, silicon, phosphorus, sulfur, and other elements required by the selected grade. | Every heat must comply with the chemical limits of the ordered grade; limits vary by standard, grade, and product thickness. | Heat analysis and product analysis shown on a traceable material test certificate. | 8% |
| 3 | Mechanical Properties | Review yield strength, tensile strength, elongation, and impact requirements when applicable. | Test results must meet the ordered grade and thickness range; no generic strength value should replace the applicable standard requirement. | Certified tensile-test results, impact-test results where specified, and laboratory identification. | 12% |
| 4 | Dimensional Accuracy | Verify width, thickness, length, straightness, profile geometry, and interlock dimensions. | Dimensions and tolerances must comply with the specified product standard, approved drawings, and purchase order. | Calibration records, inspection reports, dimensional sampling plan, and measured inspection data. | 10% |
| 5 | Interlock Performance | Assess interlock fit, continuity, damage rate, and resistance to separation during handling and installation. | Interlocks should be continuous and free from defects that prevent proper threading; acceptance criteria should be defined before production. | Profile drawings, sample assembly records, visual inspection reports, and approved repair procedures. | 12% |
| 6 | Surface and Internal Quality | Inspect laminations, cracks, seams, rust scale, dents, edge damage, and unacceptable surface discontinuities. | No defects that reduce structural performance, effective thickness, interlock function, or compliance with the agreed acceptance criteria. | Visual inspection records, non-destructive testing procedure where specified, and nonconformance reports. | 10% |
| 7 | Traceability System | Confirm that each bundle or pile can be linked to its heat number, production record, inspection result, and shipment documents. | Traceability should remain legible and intact from raw material receipt through delivery. | Heat marks, bundle lists, production logs, mill certificates, and packing photographs. | 8% |
| 8 | Production Equipment | Evaluate reheating, rolling, sizing, cutting, straightening, inspection, and material-handling equipment. | Equipment must be suitable for the ordered profile, section modulus, length, grade, and production volume. | Factory audit, equipment list, maintenance records, process flow chart, and recent production samples. | 8% |
| 9 | Production Capacity | Compare available rolling capacity with the required tonnage, profile mix, delivery schedule, and peak-season workload. | Capacity should be demonstrated with planned production slots and confirmed raw-material availability, not only a stated annual figure. | Capacity statement, rolling schedule, order backlog, raw-material plan, and production lead-time record. | 8% |
| 10 | Quality Management | Review inspection responsibilities, calibration control, corrective action, document control, and internal audits. | A certified quality-management system such as ISO 9001 is useful, but product compliance must still be verified independently. | Valid certificate, quality manual, inspection and test plan, calibration certificates, and corrective-action records. | 7% |
| 11 | Independent Inspection | Define whether inspection is performed by the buyer, an independent inspection body, or both. | For high-value or critical projects, use a pre-shipment inspection covering documents, dimensions, surface condition, marking, and quantity. | Approved inspection and test plan, signed release note, inspection photographs, and final inspection report. | 3% |
| 12 | Documentation and Certification | Check the completeness and consistency of certificates, packing lists, commercial documents, and shipping records. | Material certificates should match the ordered grade, heat number, dimensions, quantity, and applicable delivery standard; EN 10204 Type 3.1 may be specified when required. | Preliminary certificate for review, final certificate, packing list, certificate of origin where required, and bill of lading. | 2% |
| 13 | Packaging and Logistics | Assess bundle stability, lifting points, corrosion protection, marking, loading method, and transport suitability. | Packaging must protect the piles from avoidable handling damage and allow safe identification, lifting, counting, and unloading. | Packing specification, loading plan, cargo photographs, bundle dimensions, and weight records. | 5% |
| Total Suggested Evaluation Weight | 100% |