GB/T 12380.4-1990 English PDF
Basic dataStandard ID: GB/T 12380.4-1990 (GB/T12380.4-1990)Description (Translated English): Integral ductile iron pipe flanges with raised face for PN 2. 5 MPa (25bar) Sector / Industry: National Standard (Recommended) Date of Issue: 6/23/1990 |