GB/T 9120.4-1988 English PDF
Basic dataStandard ID: GB/T 9120.4-1988 (GB/T9120.4-1988)Description (Translated English): Loose plate steel pipe flanges with welding neck collar with male and female face for PN 4. 0MPa (40 bar) Sector / Industry: National Standard (Recommended) Date of Issue: 4/25/1988 |