The State Administration for Market Supervision and Regulation (State Standardization Administration) on June 30 approved the release of 278 recommended national standards, three recommended national standards revision lists, as well as 26 mandatory national standards and one mandatory national standards revision list. Among them are a number of new and revised recommended national standards and one mandatory national standard in the area of iron and steel.
|
No. |
Standard No. |
Name of standard |
Substitute standard No. |
Implementation date |
|
1 |
GB/T 241-2025 | Hydraulic test methods for pipes of metallic materials | GB/T 241-2007 |
2026-01-01 |
|
2 |
GB/T 5027-2025 | Determination of plastic strain ratio (r-value) of thin plates and strips of metallic materials | GB/T 5027-2016 |
2026-01-01 |
|
3 |
GB/T 5028-2025 | Determination of tensile strain hardening index (n-value) of thin plates and strips of metallic materials | GB/T 5028-2008 |
2026-01-01 |
|
4 |
GB/T 6730.23-2025 | Determination of titanium content of iron ore Ammonium iron sulphate titrimetry | GB/T 6730.23-2006 |
2026-01-01 |
|
5 |
GB/T 6730.45-2025 | Determination of arsenic content in iron ore Arsenic separation-Arsenic-molybdenum blue spectrophotometric method | GB/T 6730.45-2006 |
2026-01-01 |
|
6 |
GB/T 8165-2025 | Stainless steel composite steel plates and strips | GB/T 8165-2008 |
2026-01-01 |
|
7 |
GB/T 9945-2025 | Stainless steel composite steel plates and strips | GB/T 9945-2012 |
2026-01-01 |
|
8 |
GB/T 9948-2025 | Seamless steel pipes for petrochemical and chemical installations | GB/T 9948-2013,GB/T 6479-2013,GB/T 24592-2009,GB/T 33167-2016 |
2026-01-01 |
|
9 |
GB/T 13814-2025 | Nickel and nickel alloy welding rods | GB/T 13814-2008 |
2026-01-01 |
|
11 |
GB/T 14451-2025 | Steel wire ropes for maneuvering | GB/T 14451-2008 |
2026-01-01 |
|
12 |
GB/T 15620-2025 | Nickel and nickel alloy solid wires and strips | GB/T 15620-2008 |
2026-01-01 |
|
13 |
GB/T 16271-2025 | Wire rope slings Plug-in buckles | GB/T 16271-2009 |
2026-01-01 |
|
14 |
GB/T 16545-2025 | Corrosion of metals and alloys Removal of corrosion products from corrosion specimens | GB/T 16545-2015 |
2026-01-01 |
|
15 |
GB/T 18669-2025 | Anchor and mooring chain steel for marine use | GB/T 32969-2016,GB/T 18669-2012 |
2026-01-01 |
|
16 |
GB/T 19747-2025 | Corrosion of metals and alloys Corrosion assessment of bimetallic atmospheric exposure | GB/T 19747-2005 |
2026-01-01 |
|
17 |
GB/T 21931.2-2025 | Ferro-nickel Determination of sulphur content Induction furnace combustion Infrared absorption method | GB/T 21931.2-2008 |
2026-01-01 |
|
18 |
GB/T 24204-2025 | Determination of low-temperature reduction pulverization rate of iron ore for blast furnace charge Dynamic test method | GB/T 24204-2009 |
2026-01-01 |
|
19 |
GB/T 24237-2025 | Determination of pelletizing index of iron ore pellets for direct reduction charges | GB/T 24237-2009 |
2026-01-01 |
|
20 |
GB/T 30898-2025 | Slag Steel for Steelmaking | GB/T 30898-2014,GB/T 30899-2014 |
2026-01-01 |
|
21 |
GB/T 33820-2025 | Ductility Tests for Metallic Materials High Speed Compression Test Method for Porous and Honeycomb Metals | GB/T 33820-2017 |
2026-01-01 |
|
22 |
GB/T 34200-2025 | Cold Rolled Stainless Steel Sheets and Strips for Roofing and Curtain Walls of Buildings | GB/T 34200-2017 |
2026-01-01 |
|
23 |
GB/T 45779-2025 | Welded profiled steel tubes for structural use |
2026-01-01 |
|
|
24 |
GB/T 45781-2025 | Machined seamless steel pipes for structural use |
2026-01-01 |
|
|
25 |
GB/T 45878-2025 | Fatigue test of metallic materials Axial plane bending method |
2026-01-01 |
|
|
26 |
GB/T 45879-2025 | Corrosion of Metals and Alloys Rapid Electrochemical Test Method for Stress Corrosion Sensitivity |
2026-01-01 |
|
|
27 |
GB 21256-2025 | Limit of energy consumption per unit of product for major processes in crude steel production | GB 21256-2013,GB 32050-2015 |
2026-07-01 |
Post time: Jul-15-2025
