×
Quality control throughout the production process is critical to ensuring the performance, appearance stability, and service life of PPGI coil. Tianjin Gaosteel Group has established a comprehensive quality management system covering incoming substrate inspection, online process monitoring, and finished product testing. The galvanized steel substrate undergoes strict testing for zinc coating weight, thickness tolerance, surface quality, and mechanical properties. During the coating process, online detection systems real‑time monitor coating thickness, curing temperature, line speed, and color consistency to avoid defects such as pinholes, scratches, color variation, and missing coating. Finished PPGI coil is subjected to comprehensive laboratory tests including cross‑cut adhesion test, pencil hardness test, impact resistance test, T‑bend test, salt spray test, and accelerated weathering test to verify corrosion resistance, processing performance, and color stability. Only products passing all inspections are packaged with waterproof and moisture‑proof materials for delivery. High‑quality PPGI coil ensures long service life, stable color, and intact coating in practical applications, reducing maintenance and replacement costs. Our quality control team consists of experienced technicians and advanced testing equipment, ensuring product traceability and consistency across batches.
20
Mar
12
Jan
12
Jan
16
Mar
EN
