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Manufacturing process and quality control

2025,04,10
Manufacturing process and quality control
1. Key processes
Forging process: Die forging is used for forming, with a forging density of ≥ 7.85g/cm ³ to ensure material density.
Surface treatment:
Heat shrink tape anti-corrosion: Radiation cross-linked polyethylene heat shrink tape (SY/T0413 standard), thickness ≥ 2.5mm, suitable for buried pipelines.
Nano coating: Jiangsu Tong Micro motor patented technology, spray ceramic coating in oxygen free environment, porosity<0.5%, adhesion>50MPa.
2. Quality standards
International standards: ASME B16.5 (American standard), EN1092-1 (European standard), DIN 2527 (German standard).
Detection method:
NDT testing: Ultrasonic testing (UT), magnetic particle testing (MT), defect size ≤ 1.5mm.
Salt spray test: 5% NaCl solution, no corrosion after 96 hours (ISO 9227 standard).
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