01Steel grade and plate thickness
WhatVerify steel grade, specification, plate thickness, heat or batch and physical marking.
WhyA grade or thickness error changes load capacity, weldability, bend behaviour and fatigue performance.
EvidenceMaterial certificates, incoming inspection, thickness readings and material traceability records.
02Cutting, bending and forming accuracy
WhatCheck developed dimensions, cut edges, bend angles, formed dimensions and datum positions.
WhyEarly-process errors accumulate during welding and assembly, misaligning interfaces or the overall form.
EvidenceFirst-piece measurements, template or gauge results, process checks and correction records.
03Welding distortion and structural dimensions
WhatCheck welding sequence, fixturing, distortion control, structural dimensions and critical welds.
WhyDistortion affects bore groups, mounting faces and load paths and can consume machining allowance.
EvidenceWeld records, structural measurements, weld inspection and straightening records.
04Bore alignment and pin-to-bush fit
WhatVerify grouped bore position, coaxiality, diameter, pin and bush clearance and assembly direction.
WhyDeviation can cause assembly difficulty, offset loading, abnormal wear or mechanism seizure.
EvidenceBore measurements, dedicated gauge or CMM records, trial assembly and fit results.
05Hardness, wear and heat treatment
WhatConfirm material zones, treatment condition, hardness, hardened depth and wear-area requirements.
WhyIncorrect treatment can cause premature wear, brittle fracture or distortion of pins, bushes and wear parts.
EvidenceHeat-treatment records, hardness and depth data, measurement locations and retest results.
06Coating, traceability and outdoor protection
WhatCheck pretreatment, coating system, thickness, colour, marking, batch traceability and packing protection.
WhyOutdoor service magnifies corrosion, fading and transport damage; weak traceability obstructs containment.
EvidenceSurface and thickness records, colour approval, marking photographs, batch and packing records.