
Non-destructive testing of steel pipes—Automatic ultrasonic testing for weld seam imperfections of thick-wall welded steel pipes
NORMA vydána dne 25.5.2026
Designation standards: GB/T 47623-2026
Note: K dispozici od: prosinec 2026
Publication date standards: 25.5.2026
Country: Chinese technical standard
Kategorie: Technické normy GB