STANDARDS

Standards and verification regulations

GB/T test methods, JJG verification regulations and ISO/ASTM international standards for hardness, metallography, dimensional metrology and environmental testing — 44 entries grouped by product line.

All 硬度计17 试验机8 金相制样4 显微镜6 几何量4 环境试验4 分析仪器4

GB/TNational standard5 项

Standard	Title	Scope
GB/T 13298	Inspection methods for microstructure of metallic materials	试验方法	Products
GB/T 6394	Determination of estimating the average grain size of metal	试验方法	Products
GB/T 10561	Steel — Determination of content of nonmetallic inclusions — Micrographic method	试验方法	Products
GB/T 2985	Biological microscopes	产品标准	Products
GB/T 22058	Microscopes — Stereomicroscopes — Information provided to the user	产品标准	Products

JB/TMachinery industry standard1 项

Standard	Title	Scope
JB/T 9324	Metallurgical microscopes	行业标准	Products

How to use

Always refer to the currently valid edition. Numbers here omit the year; state the edition year in purchase and acceptance documents.
JJG are verification regulations used for annual metrology inspection; GB/T are test-method or product standards used for acceptance and test reports.
Export projects often require ISO 6507/6508 together with ASTM E18/E384; matching calibration certificates ship with the machine.