Manufacturing process and quality control

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).