GB/T 28248-2012 Active National standards

GB/T 28248-2012 Cemented carbide drills for printed boards

Publish Date: 2012-03-09 Implement Date: 2012-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 28248-2012

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Knives

ICS Name: Drill, reamer, and hobbing cutter

Publish Date: 2012-03-09

Implement Date: 2012-07-01

Pages: 17 pages

Scope

This standard specifies the terms and definitions, dimensions, technical requirements, inspection, packaging, storage, and transportation of hard alloy drills with diameters ranging from 0.05 mm to 6.5 mm used in the processing of printed circuit boards (hereinafter referred to as drills).

Development Information

Word Count: 30 Thousand words Pages: 17 pages

Referenced Standards

GB/T 4340.4-2009 Metallic materials—Vickers hardness test—Part 4:Tables of hardness values YB/T 5349-2006 Metallic materials -Determination of bending mechanical properties

Related Standards

GB/T 4267-1984 Replaced

GB/T 4267-1984 Rotating tools with parallel shanks—Diameters of shanks and sizes of driving squares

Publish Date: 1984-03-28

GB/T 14299-1993 Replaced

GB/T 14299-1993 Spiral flute drill with indexable inserts

Publish Date: 1993-04-17

GB/T 14332-1993 abolished_transferred

GB/T 14332-1993 Ejector drills with carbide tips

Publish Date: 1993-04-17

GB/T 1438.1-1996 Replaced

GB/T 1438.1-1996 Taper shank twist drills—Part 1:The types and dimensions for Morse taper shank twist drills

Publish Date: 1996-07-05

GB/T 1438.2-1996 Replaced

GB/T 1438.2-1996 Taper shank twist drills—Part 2:The types and dimensions for long Morse taper shank twist drills

Publish Date: 1996-07-05

GB/T 1438.3-1996 Replaced

GB/T 1438.3-1996 Taper shank twist drills—Part 3:The types and dimensions for lengthened Morse taper shank twist drills

Publish Date: 1996-07-05