Chinese structural steel design follows GB 50017 with materials to GB/T 700 and GB/T 1591, and execution and acceptance to GB 50205. Welding follows GB 50661 and the JGJ series, and mandatory national standards are enforced through the design review and construction acceptance process.
§ Standards
Entries
23
SAC, JISC, KATS, Enterprise Singapore, Hong Kong Buildings Department
Region
Far East
steel standards
Far East practice covers strong national codes — GB in China, JIS and the Building Standard Law in Japan, KS in South Korea — alongside jurisdictions such as Singapore and Hong Kong that use Eurocode based or British based codes with local national annexes and approval regimes.
§ 01
Countries
Country standards
Japan sets structural requirements through the Building Standard Law and its enforcement orders, supported by JIS material standards such as JIS G 3101 and JIS G 3136 for seismic grade steel. Fabricators are graded under a national certification scheme, and welding qualification follows JIS Z 3801 and related standards.
South Korea works to the Korean Building Code and KDS design standards with KS material specifications such as KS D 3503 and KS D 3515. Welding and inspection follow the KS B series, and product certification is demonstrated through the KS mark.
Singapore has adopted the Eurocodes as SS EN standards with a Singapore National Annex, so structural steel is designed to SS EN 1993 and executed to SS EN 1090-2. Building plan approval runs through BCA, and steelwork commonly requires an accredited fabricator and independent inspection.
Hong Kong uses the Code of Practice for the Structural Use of Steel issued by the Buildings Department, which is British and limit state based with local amendments. Steel materials must come from recognised classes of supply, and fabricators and welders work under a defined qualification and inspection regime.
§ 02
Index
Standards in Far East
23 of 23 entries
- BCA requirements
Building and Construction Authority structural steel requirements
Singapore's plan approval, accredited fabricator and independent checking requirements for structural steelwork.
SingaporeQuality & certificationCURRENTFree
- Building Standard Law
Building Standard Law of Japan and Enforcement Orders
The statutory framework for structural design in Japan, including the structural calculation confirmation process and fabricator grading.
JapanDesign codesCURRENTFree
- Buildings Ordinance
Hong Kong Buildings Ordinance (Cap. 123)
The statutory basis for building control in Hong Kong, including registered engineer and contractor duties and supervision plans.
Hong KongQuality & certificationCURRENTFree
- CoP Dead and Imposed Loads
Code of Practice for Dead and Imposed Loads
Hong Kong loading code used with the structural steel code for building design.
Hong KongDesign codesCURRENTFree
- CoP Structural Use of Steel
Code of Practice for the Structural Use of Steel
Hong Kong's limit state steel design code, which also defines classes of steel supply and the qualification expected of fabricators and welders.
Hong KongDesign codesCURRENTFree
- GB / EN comparison
Comparing GB grades with EN and ASTM grades
Q355 and S355 share a nominal yield strength but differ in quality suffix meaning, impact testing and delivery condition, so certificates must be read rather than assumed.
ChinaSteel grade equivalentsCURRENTFree
- GB 50009
Load Code for the Design of Building Structures
The Chinese loading code providing dead, imposed, wind and snow actions for building design.
ChinaDesign codesCURRENTPaid
- GB 50011
Code for Seismic Design of Buildings
Chinese seismic design code, applied with GB 50017 for steel framed buildings.
ChinaDesign codesCURRENTPaid
- GB 50017
Standard for Design of Steel Structures
China's national steel design standard covering member and connection resistance, stability and serviceability.
ChinaDesign codesCURRENTPaid
- GB 50205
Standard for Acceptance of Construction Quality of Steel Structures
China's execution and acceptance standard for steel structures — the counterpart to EN 1090-2 — covering fabrication, erection and inspection acceptance.
ChinaFabricationCURRENTPaid
- GB 50661
Code for Welding of Steel Structures
Chinese welding requirements for steel structures, including procedure qualification, welder approval and weld inspection classes.
ChinaWeldingCURRENTPaid
- GB/T 1591
High Strength Low Alloy Structural Steels
Chinese HSLA grades such as Q355, the grade most often compared with S355 on export projects.
ChinaMaterialsCURRENTPaid
- GB/T 700
Carbon Structural Steels
Chinese carbon structural grades including Q235, defined by yield strength and quality grade letters.
ChinaMaterialsCURRENTPaid
- JIS B 1186
Sets of High Strength Hexagon Bolt, Hexagon Nut and Plain Washers for Friction Grip Joints
Japanese friction grip bolt sets, qualified as matched assemblies for slip resistant connections.
JapanBoltingCURRENTPaid
- JIS G 3101
Rolled Steels for General Structure
Japanese general structural grades including SS400, widely used across Asian fabrication.
JapanMaterialsCURRENTPaid
- JIS G 3106
Rolled Steels for Welded Structure
SM grades intended for welded structures, with controlled chemistry and impact properties.
JapanMaterialsCURRENTPaid
- JIS G 3136
Rolled Steels for Building Structure (SN steel)
SN grades developed for seismic building frames, with upper yield limits and through-thickness properties in grade C.
JapanMaterialsCURRENTPaid
- JIS Z 3801
Standard Qualification Procedure for Manual Welding Technique
Japanese welder qualification testing used alongside the national fabricator grading system.
JapanWeldingCURRENTPaid
- KDS 14 31 00
Korean Design Standard — Steel Structures
The Korean design standard for steel structures within the unified KDS code system.
South KoreaDesign codesCURRENTFree
- KS D 3503
Rolled Steels for General Structure
Korean general structural steel grades such as SS275, closely aligned with the Japanese system.
South KoreaMaterialsCURRENTPaid
- KS D 3515
Rolled Steels for Welded Structure
Korean SM grades for welded structures with defined impact requirements.
South KoreaMaterialsCURRENTPaid
- SS EN 1090-2
Execution of steel structures — Singapore adoption
Singapore's adoption of the European execution standard, including execution classes and fabricator requirements.
SingaporeFabricationCURRENTPaid
- SS EN 1993-1-1
Eurocode 3 with Singapore National Annex
Singapore's adoption of Eurocode 3 with a National Annex setting local parameters, mandatory for building plan approval.
SingaporeDesign codesCURRENTPaid
Verification
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