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JB/T 7977-1999 This standard is a revision of JB/T 7977-95 "Cast Iron Ruler". During the revision, editorial changes were made acc
JB/T 7975-1999 JB/T 7975-1999 Rock Slab JB/T7975-1999 Standard download decompression password: www.bzxz.net
JB/T 7974-1999 This standard is a revision of JB/T 7974-95 "Cast Iron Plate". During the revision, editorial modifications were ma
JB/T 7973-1999 This standard is a revision of JB/T 7973-95 "Sine Gauge". During the revision, editorial changes were made accordin
JB/T 7972-1999 This standard is a revision of JB/T 7972-95 "Carbide Helical Taper Shank End Mill". During the revision, the perfor
JB/T 7971-1999 This standard is a revision of JB/T 7971-95 "Carbide Helical Tooth Straight Shank End Mill". During the revision, t
JB/T 7970.2-1999 This standard is a revision of JB/T 7970.2-95 "Technical requirements for disc gear milling cutters". During the
JB/T 7970.1-1999 JB/T 7970.1-1999 Disc gear milling cutters Part 1: Basic types and dimensions JB/T7970.1-1999 Standard download d