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Verification of physical dimensions, geometric tolerances, hole centers, and drawing compliance for manufactured and fabricated components.
Dimensional Inspection is the precise measurement of physical dimensions, geometric features, hole center-to-center distances, flange face flatness, angular alignment, and wall thickness of manufactured parts and structural fabrications against applicable engineering drawings and GD&T specifications.
By utilizing calibrated precision metrology instruments—including digital Vernier calipers, outside micrometers, height gauges, bore gauges, pitch gauges, and optical flat comparators—INTEGRI NDT ensures that fabricated structures and machined mechanical components conform strictly to design tolerances prior to site assembly or final dispatch.
| Method Code: | DIM / METROLOGY |
|---|---|
| Verification: | Dimensions & GD&T Compliance |
| Instruments: | Digital Calipers, Micrometers & Height Gauges |
| Primary Codes: | ASME Y14.5, ISO 1101 |
Instrument accuracies, calibration traceability, and governing standards for dimensional metrology.
| Specification Category | Technical Parameter & Scope |
|---|---|
| Target Features & Tolerances | Overall length, width, height, internal and external diameters, wall thickness, hole pitch, bolt-circle PCD, thread pitch, surface flatness, perpendicularity, parallelism, and other specified dimensional and geometric tolerances. |
| Instrument Precision Range | Digital calipers with 0.01 mm / 0.0005 in resolution, digital micrometers with 0.001 mm / 0.00005 in resolution, digital height gauges, and precision feeler gauges. |
| Applicable Codes & Standards | ASME Y14.5 (Geometric Dimensioning & Tolerancing), ISO 1101, ISO 2768 (General Tolerances), and AWS D1.1/D1.1M (Structural Welding Dimensional Requirements). |
| Metrology Calibration Traceability | Inspection instruments maintained under a documented calibration system with traceability to recognized national or international standards, supported by current calibration certificates and equipment identification records. |
| Flange & Vessel Measurements | ASME B16.5 and ASME B16.47 flange dimensions, bolt-hole orientation, ring-joint groove dimensions, gasket-face finish, nozzle projection, and other specified vessel and piping dimensions. |
| Documentation Deliverables | Tabulated dimensional inspection reports, drawing markup sheets identifying out-of-tolerance dimensions, measurement records, and Certificates of Dimensional Compliance where required. |
Submit your engineering drawings and tolerance requirements to our metrology team.
