Steel props,as core load-bearing components for supporting formwork,foundation pits and structural bodies,play a crucial role in ensuring construction safety and structural stability.The British standard for steel props is mainly based on the European standard EN 1065:1998 and British national standards such as BS EN 10025-2,while the Chinese national standard is based on GB/T 1591-2018,JGJ130-2011 and other national and industry standards.The differences between the two standards run through the whole process from material selection to production,inspection and application,and are closely related to the safety and economy of engineering construction.
1.Differences in Standard Systems and Core Reference Standards
The British standard(BS standard)steel props adopt a standard system integrated with European standards,with the core reference standards being EN 1065:1998(specifications,design and evaluation of adjustable sleeve-type steel props through calculation and testing)and BS EN 10025-2(hot-rolled structural steel plates,strips and sections).This standard system focuses on the consistency of technical requirements with European engineering standards,emphasizing the comprehensive evaluation of product performance through strict testing items such as length adjustment device dimension measurement,prop strength,material performance and deformation measurement[superscript:7].In addition,British standard steel props also refer to BS 4360 and BS 4601 series standards for material and structural design specifications.
The national standard(GB standard)steel props adopt an independent national standard system,with core reference standards including GB/T 1591-2018(High-strength low-alloy structural steels),JGJ130-2011(Technical Specification for Steel Pipe Scaffold and Formwork Support in Construction),GB/T 2518-2019(Continuous Hot-Dip Zinc-Coated Steel Sheets and Strips)and GB/T 8162-2008(Structural seamless steel pipes).This standard system is formulated according to China's construction characteristics,geological conditions and engineering needs,focusing on the adaptability of steel props to complex construction environments and the matching with domestic other building materials and construction processes.
2.Differences in Material Performance Requirements
The material selection of British standard steel props focuses on high-strength and high-toughness structural steel,with the main material grades being S275 and S355 according to BS EN 10025-2.Among them,S275 steel has a minimum yield strength of 275MPa and a tensile strength of 370-510MPa,while S355 steel has a minimum yield strength of 355MPa and a tensile strength of 470-630MPa.These materials have excellent mechanical properties and fatigue resistance,which can adapt to the high-load and cyclic vibration working conditions of European construction projects.In addition,British standard steel props have strict requirements on the uniformity of material composition and the precision of rolling process,ensuring the stability of product performance.batch to batch.
The main material of national standard steel props is low-alloy high-strength steel Q235 and Q355(corresponding to the old grade Q345)according to GB/T 1591-2018.Q235 steel has a minimum yield strength of 235MPa and a tensile strength of 375-500MPa,which is suitable for ordinary load-bearing scenarios;Q355 steel has a minimum yield strength of 355MPa and a tensile strength of 470-630MPa,which is used for heavy-load scenarios such as deep foundation pit support.Compared with British standard materials,national standard Q235 steel has lower strength,but it has the advantages of low cost and wide source,which is more in line with the cost control needs of domestic general construction projects.For special scenarios such as subway construction,national standard steel props also need to meet the requirements of good fatigue resistance to withstand cyclic vibration.
3.Differences in Structural Design and Specification Parameters
In terms of structural design,British standard steel props are mainly telescopic thread type and pin type,with a focus on modular design and assembly flexibility.The cross-sectional shape is mostly circular,and the common outer tube diameter is 48.3mm(matching British standard scaffolding tubes)and 60.3mm,with a wall thickness of 3.2mm-4.5mm.The adjustable range is usually 1.0m-4.5m,and the adjustment accuracy is controlled within 1mm-2mm.The locking mechanism adopts high-precision thread or pin connection,and the thread engagement length is not less than 10 buckles to ensure locking reliability under vibration.In addition,British standard steel props pay attention to the design of anti-loosening and anti-slip structures,which is suitable for the assembly needs of large-scale modular construction.
National standard steel props are also mainly telescopic thread type and pin type,but the specification parameters are more in line with domestic construction needs.The common outer tube diameter is 48mm,609mm and 800mm,among which 609mm and 800mm are widely used in subway deep foundation pit support,with a wall thickness of not less than 16mm(such as the common specificationφ800×16).The adjustable range is designed according to the depth of the foundation pit and the height of the tunnel,usually 1.5m-6.0m,and the adjustment accuracy is controlled within 1mm-3mm.The locking mechanism of thread-type props requires that the thread engagement length is not less than 8 buckles,and the pin of pin-type props is made of high-strength alloy steel.The connection between steel props and steel purlins,bases and top plates adopts flange connection or high-strength bolt connection,emphasizing the overall stability of the support system.
In terms of marking and identification,British standard steel props are usually identified by standard number and strength grade,while national standard steel props are identified by model,size and strength grade,which is more intuitive and convenient for on-site construction and management.
4.Differences in Load-Bearing Capacity and Safety Requirements
British standard steel props have strict requirements on load-bearing capacity and safety reserves,with the rated load-bearing capacity of ordinary steel props generally not less than 150kN,and heavy-duty steel props up to 300kN-400kN.According to EN 1065:1998,steel props need to pass strict performance tests,including yield strength,tensile strength,elongation,deformation measurement and failure load test,to ensure that they can withstand dynamic loads such as construction vibration and cyclic load without fatigue damage.The safety factor of British standard steel props is usually 2.5-3.0,focusing on the reliability under extreme working conditions.
The rated load-bearing capacity of national standard steel props is generally not less than 100kN,and heavy-duty steel props for subway construction can reach 200kN-300kN.The safety factor is usually 2.0-2.5,which is formulated according to domestic construction load characteristics and safety management requirements.For steel props used in subway and other important projects,active prestress(50%-70%of the design axial force)needs to be applied after installation to pre-offset the deformation of the retaining structure.The national standard also has clear requirements on the welding quality of steel props,prohibiting welding defects such as cracks and incomplete penetration to ensure uniform force transmission between components.
5.Differences in Anti-Corrosion Requirements
British standard steel props have high anti-corrosion requirements,mainly adopting hot-dip galvanizing anti-corrosion treatment,with a zinc layer thickness of not less than 90 microns,and the neutral salt spray test time is not less than 1200 hours,ensuring that the anti-corrosion life is not less than 20 years.For coastal areas or construction environments with strong corrosion,double anti-corrosion treatment of hot-dip galvanizing plus epoxy spraying is adopted,with a total anti-corrosion layer thickness of not less than 180 microns,to adapt to the humid and corrosive environment in Europe.
The anti-corrosion treatment of national standard steel props is mainly hot-dip galvanizing,with a zinc layer thickness of not less than 80 microns,complying with the requirements of GB/T 2518-2019.The neutral salt spray test time is not less than 1000 hours,and the anti-corrosion life is not less than 15 years.For special corrosive environments,double anti-corrosion treatment of hot-dip galvanizing plus epoxy spraying is also adopted,with a total anti-corrosion layer thickness of not less than 150 microns.The national standard also emphasizes the regular anti-corrosion inspection and maintenance during the use of steel props to avoid corrosion expansion.
6.Differences in Application Scenarios
British standard steel props are mainly used in European construction projects,such as residential buildings,commercial buildings,bridge engineering and tunnel engineering.They are suitable for modular construction,large-span support and high-precision construction scenarios,and are widely matched with British standard scaffolding,formwork and other components.Due to the high material strength and strict safety requirements,they are also used in high-rise building construction and large-scale industrial plant support.
National standard steel props are widely used in various domestic construction projects,including residential buildings,commercial buildings,subway deep foundation pit support,tunnel engineering,bridge engineering and other fields.They are especially suitable for complex geological conditions and heavy-load support scenarios in China,such as subway deep foundation pit support and high-rise building formwork support.The specification design is more targeted,which can better match the domestic construction process and structural design requirements.
7.Differences in Inspection and Acceptance Standards
The inspection and acceptance of British standard steel props focus on comprehensive performance testing,including material composition analysis,mechanical performance testing,structural size inspection,load-bearing performance testing,anti-corrosion performance testing and fatigue performance testing.According to EN 1065:1998,the sampling requirements are strict(e.g.,6 samples for material performance testing,8 samples for deformation measurement),and only products that pass all tests can be put into use.The inspection report needs to comply with European standard requirements to ensure the traceability of product quality.
The inspection and acceptance of national standard steel props mainly include material inspection,structural size inspection,load-bearing performance test and anti-corrosion performance test,complying with GB/T 50299-2018(Standard for Construction Quality Acceptance of Metro Engineering)and other standards.The sampling and testing methods are formulated according to domestic engineering characteristics,emphasizing the practicality and operability of inspection.The inspection report needs to meet the requirements of national and industry standards to provide a basis for project acceptance.
Conclusion
The differences between British and national standard steel props are mainly reflected in the standard system,material performance,structural design,load-bearing capacity,anti-corrosion requirements,application scenarios and inspection standards.British standard steel props have the characteristics of high material strength,strict safety requirements,high precision and long anti-corrosion life,which are suitable for European modular construction and high-precision engineering;national standard steel props have the advantages of reasonable specification,low cost and strong adaptability,which are more in line with the needs of domestic construction projects.In engineering practice,the appropriate standard steel props should be selected according to the project location,construction requirements,load conditions and economic benefits to ensure the safety,reliability and economy of the construction process.
References
1.GB/T 7714 Format
China Academy of Building Research.Comparison of Technical Standards for British and National Standard Steel Props[EB/OL].[2026-04-17].
2.MLA Format
British Standards Institution(BSI)."EN 1065:1998 Specification for Adjustable Telescopic Steel Props."British Standards Institution,1998.Accessed 17 Apr.2026.
3.APA Format
China Construction Third Engineering Bureau Co.,Ltd.(2026).Comparative Analysis of Performance and Application of British and National Standard Steel Props.
4.MLA Format
Shanghai Ruiyunhang Supply Chain Co.,Ltd."Performance Characteristics of British Standard H-Steel for Construction."Shanghai Ruiyunhang Supply Chain Co.,Ltd.,2026.Accessed 17 Apr.2026.
5.GB/T 7714 Format
Guangzhou Testing Center of Construction Materials.Inspection Standards and Performance Comparison of British and National Standard Steel Props[EB/OL].[2026-04-17].