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 standard3 项

Standard	Title	Scope
GB/T 4336	Carbon and low-alloy steel — Determination of multi-element contents — Spark discharge atomic emission spectrometric method	试验方法	Products
GB/T 11170	Stainless steel — Determination of multi-element contents — Spark discharge atomic emission spectrometric method	试验方法	Products
GB/T 4956	Non-magnetic coatings on magnetic substrates — Measurement of coating thickness — Magnetic method	试验方法	Products

NB/TEnergy industry standard1 项

Standard	Title	Scope
NB/T 47013.1	Nondestructive testing of pressure equipments — Part 1: General requirements	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.