GB/T 28248-2012

Active

Cemented carbide drills for printed boards

印制板用硬质合金钻头

Standard Type

GBT

ICS

25.100.30

CCS

J41

Status

现行

Issue Date

2012-03-09

Implementation

2012-07-01

Responsible Dept

中国机械工业联合会

Drafting Unit

N/A

🔗 Related Standards / 同类标准

GB/T 3832.3-1983 Round follower end for broaches--Types and main dimensions GB/T 3832.2-1983 Round shanks for broaches--Types and main dimensions GB/T 3832.1-1983 Rectangular shanks for broaches--Types and main dimensions GB/T 4246-1984 Special tolerance for reamers GB/T 4267-1984 Rotating tools with parallel shanks--Diameters of shanks and sizes of driving squares GB/T 5105-1985 The basic types and dimensions of hobs for 45°pressure angle involute splines GB/T 5104-1985 The basic types and dimensions of hobs for 30°pressure angle involute splines GB/T 6338-1986 Dovetail and inverse dovetail milling cutters with plain parallel shanks