lead strength
lead strength, Total:4 items.
The international standard classification for "lead strength" includes: Miscellaneous domestic and commercial equipment .
The Chinese standard classification for "lead strength" includes: .
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 39542.3-2020 Mechanical pencils for technical drawings—Part 3:Black leads—Bending strengths of HB leads
- GB/T 39011.3-2020 Mechanical pencils for technical drawings—Part 3:Black leads—Bending strengths of HB leads
IEEE - The Institute of Electrical and Electronics Engineers@ Inc.
- IEEE 84-1963 Test Procedure for DETERMINING TENSILE STRENGTH and HARDNESS OF LEAD SHEATHS
International Organization for Standardization (ISO)
- ISO 9177-3:1994 Mechanical pencils - Part 3: Black leads - Bending strengths of HB leads
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