Chinese National Standards

Welded carbon and low alloy steel tubes for structural purpose

Issued

2026-05-25

Effective

2026-12-01

Methods for chemical analysis of magnesium and magnesium alloys—Part 9: Determination of iron and silicon content—Spectrophotometric method

Issued

2026-05-25

Effective

2026-12-01

Functional safety of safety instrumented system in oil and gas pipelines—Part 2：Acceptance requirements

Issued

2026-05-25

Effective

2026-12-01

Test methods for density and relative density of fiber reinforced plastics

Issued

2026-05-25

Effective

2026-12-01

Artificial climate aging test method for building materials

Issued

2026-05-25

Effective

2026-12-01

Test method of thermal protective performance of thermal insulation sheets

Issued

2026-05-25

Effective

2026-12-01

Irradiation processing practice for agricultural product—Part 7: Flavorings and seasonings

Issued

2026-05-25

Effective

2026-12-01

Chemical analysis methods of rare earth ferrosilicon alloys and rare earth magnesium ferrosilicon alloys—Part 2: Determination of calcium, magnesium, manganese, aluminum, barium, antimony, bismuth, strontium, phosphorus and titanium contents

Issued

2026-05-25

Effective

2026-12-01

Methods for chemical analysis of magnesium and magnesium alloys—Part 3：Determination of lithium,silver content—Flame atomic absorption spectrometry method

Issued

2026-05-25

Effective

2026-12-01