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Structural Steel for Multi-Family Buildings Certified Quality
Provide structural steel conforming to GB Q235B/Q355B, EN S235/S275/S355, GOST St37/St52, ASTM A36/A572 standard with yield strength of 345MPa, support large-span column-free design, shorten the construction period by 20%-30% compared with traditional concrete construction, and provide high-strength and lightweight skeleton support for multi-family residential buildings with large-scale supply capacity.
GB Q235/355
Material standard
≥ 345 MPa
Yield strength
>4 mm
Machining tolerance
Structural Steel for Multi-Family Buildings characteristics
Accelerated construction cycle
Using factory prefabricated production, site installation speed is 25%-30% faster than cast-in-place concrete structure. This “plug and play” installation method significantly reduces the financing costs and on-site labor requirements of multi-family residential projects.
Maximize floor height and span
Utilizing a high yield strength of 50ksi(345MPa), a long span shallow beam design over 9 meters is supported. Reduce the number of load-bearing columns inside multi-family houses, increase usable floor area and optimize heating, ventilation and air conditioning (HVAC) piping layout.
High-precision manufacturing ensures the stability of the overall structure
The whole process adopts numerical control cutting and drilling, and the tolerance of component length and hole position is strictly controlled within 1mm. High-precision manufacturing eliminates on-site installation misalignment problems and ensures the tightness of bolt connections and the stability of the overall structure.
Improve safety in earthquake zones
The self-weight of structural steel systems is usually 40%-50% lighter than that of reinforced concrete buildings. This feature significantly reduces the cost of foundation treatment for multi-family houses, while reducing seismic loads and improving the safety of buildings in earthquake zones.
High level of fire protection and safety
As an inorganic non-combustible material, structural steel does not support combustion. With the expansion of fire retardant coating or fire board package, the fire resistance limit can easily reach 2-3 hours, fully meet the strict fire safety specifications of multi-storey and high-rise residential buildings.
Sustainability and LEED Certification
It is mainly produced by the electric arc furnace process and contains more than 93% recycled materials. 100 percent recyclable at end-of-life, helping multi-family residential developments earn LEED green building certification points.
Structural Steel for Multi-Family Buildings Detailed parameter table
| Parameter name | Specifications/Standard Data |
| Main profile standards | ASTM A992, A572, A572 Grade 50/60/65, A992 ;EN 10025; GB/T 1591 |
| Yield strength | 50 ksi (345 MPa) |
| Tensile strength | 65 ksi (450 MPa) |
| elastic modulus | 29,000 ksi (200 GPa) |
| density | 7.85 g/cm³ |
| Manufacturing tolerance standards | AISC 303, ASTM A6 |
| Surface treatment | Shot blasting to remove rust at Sa 2.5 grade, pre-coated with epoxy zinc-rich primer. |
| Common connection methods | High-strength bolt connection (A325/A490), welding |
| Fire protection compatibility | Fire-retardant spray, intumescent coating, gypsum board wrapping |
| Recycled material content | > 90% (mainly recycled scrap steel) |
Structural Steel for Multi-Family Buildings for people
Real Estate Developer
Developers seeking a fast return on investment (ROI). Using the rapid construction characteristics of structural steel, multi-family residential projects can be delivered to the market months in advance, thereby greatly saving financing interest and speeding up the return of funds.
General Construction Contractor
Contractors facing tight deadlines and restricted construction sites. Off-site prefabrication and just-in-time (JIT) delivery of structural steel reduces the need for on-site material stacking, reduces construction noise and dust interference, and facilitates project management in urban centers.
Modular Building Manufacturer
Businesses that focus on prefabricated multi-family homes. The high-precision tolerance and high-strength-to-weight ratio of structural steel make it an ideal material for modular unit frames, capable of withstanding dynamic loads during transportation and lifting.
High-rise Apartment Architect
Designers who need flexible space layouts. Through the large span capacity of the steel structure, an open floor plan is designed to allow residents to freely customize space in non-load-bearing wall areas, enhancing the market appeal of the property.
Structural Steel for Multi-Family Buildings Raw Material/Material Description
The main raw material of this product is high-quality carbon structural steel smelted by electric arc furnace (EAF) process. The core components include iron (Fe) and controlled amounts of carbon (C <0.23%), manganese, silicon. The raw material contains more than 93% of recycled scrap steel, which is refined to remove impurities such as sulfur and phosphorus, ensuring that the material has excellent ductility and weldability, and meets the ASTM A992 metallurgical standard.Structural Steel for Multi-Family Buildings life and after-sales service
Pre-sales and after-sales service
Provide Tekla 3D in-depth design and structural optimization suggestions before sales; provide complete component installation instructions, on-site technical support, and a 2-year quality assurance service for welds and coatings after sales.
Expected service life and description
With proper anti-corrosion maintenance and fire protection, structural steel frames used in multi-family houses can have an expected service life of more than 75-100 years. It is recommended to check the anti-rust layer of hidden parts every 5-10 years.
factory and certificate
certificate
FAQ And Contact Us
Welcome to our Frequently Asked Questions page. We have compiled answers to common questions you may have, hoping to provide you with clear and quick solutions. If you cannot find the information you need here, please feel free to contact our customer support team.
What is the cost of structural steel for multi-family housing compared to wood?
Although the initial material cost of structural steel may be higher than that of wood, considering its faster construction speed (reducing labor and financing costs), lower insurance rates, and longer service life, in multi-family housing projects with more than 4 floors In China, the comprehensive total cost of ownership of structural steel tends to be more competitive.
What is the sound insulation effect of steel structure in multi-family houses?
The structural steel itself transmits sound faster, but in multi-family residential applications, through the use of acoustic decoupling floor system, concrete composite floor and the wall filled with sound-absorbing cotton, can effectively block the air sound and impact sound, to achieve STC 50 above the sound insulation standards.
How does this product meet the fire code for multi-family homes?
Structural steel, although non-combustible, decreases in strength at high temperatures. We ensure that the structure meets the 2-3 hour fire resistance rating required by the specification by spraying fireproof coating on the surface of steel beams and steel columns, wrapping fireproof boards or pouring concrete protective layers to ensure the safety of household evacuation.
Is this steel suitable for multi-family residential projects in coastal areas?
Suitable, but requires special anti-corrosion treatment. For coastal high salt spray environment, we recommend the use of hot-dip galvanizing treatment or painting high-performance epoxy zinc-rich heavy anti-corrosion coating system to prevent chloride ion corrosion and ensure structural durability.
Does this structural steel support the construction of hybrid structures (such as Podium construction)?
Very supportive. In the common Podium design of multi-family houses, structural steel is often used as the support frame of the bottom commercial or parking floor, and the light steel or wood structure residential unit is built above, and the high bearing capacity of the steel is used to support the upper load.
What is the lead time for ordering custom structural steel for multi-family homes?
Typically, it takes 4-6 weeks from confirmation of deepening drawings to shipment of the first components. The specific time depends on the tonnage of the project and the processing complexity. We recommend to intervene early in the project to allow sufficient time for raw material procurement and scheduling.
Please feel free to contact us. We look forward to hearing from you.
Structural Steel for Multi-Family Buildings Certified Quality
Provide structural steel conforming to GB Q235B/Q355B, EN S235/S275/S355, GOST St37/St52, ASTM A36/A572 standard with yield strength of 345MPa, support large-span column-free design, shorten the construction period by 20%-30% compared with traditional concrete construction, and provide high-strength and lightweight skeleton support for multi-family residential buildings with large-scale supply capacity.
Material standard
GB Q235/355
Yield strength
≥ 345 MPa
Machining tolerance
>4 mm
Structural Steel for Multi-Family Buildings characteristics
Accelerated construction cycle
Using factory prefabricated production, site installation speed is 25%-30% faster than cast-in-place concrete structure. This “plug and play” installation method significantly reduces the financing costs and on-site labor requirements of multi-family residential projects.
Maximize floor height and span
Utilizing a high yield strength of 50ksi(345MPa), a long span shallow beam design over 9 meters is supported. Reduce the number of load-bearing columns inside multi-family houses, increase usable floor area and optimize heating, ventilation and air conditioning (HVAC) piping layout.
High-precision manufacturing ensures the stability of the overall structure
The whole process adopts numerical control cutting and drilling, and the tolerance of component length and hole position is strictly controlled within 1mm. High-precision manufacturing eliminates on-site installation misalignment problems and ensures the tightness of bolt connections and the stability of the overall structure.
Improve safety in earthquake zones
The self-weight of structural steel systems is usually 40%-50% lighter than that of reinforced concrete buildings. This feature significantly reduces the cost of foundation treatment for multi-family houses, while reducing seismic loads and improving the safety of buildings in earthquake zones.
High level of fire protection and safety
As an inorganic non-combustible material, structural steel does not support combustion. With the expansion of fire retardant coating or fire board package, the fire resistance limit can easily reach 2-3 hours, fully meet the strict fire safety specifications of multi-storey and high-rise residential buildings.
Sustainability and LEED Certification
It is mainly produced by the electric arc furnace process and contains more than 93% recycled materials. 100 percent recyclable at end-of-life, helping multi-family residential developments earn LEED green building certification points.
Structural Steel for Multi-Family Buildings Detailed parameter table
| Parameter name | Specifications/Standard Data |
| Main profile standards | ASTM A992, A572, A572 Grade 50/60/65, A992 ;EN 10025; GB/T 1591 |
| Yield strength | 50 ksi (345 MPa) |
| Tensile strength | 65 ksi (450 MPa) |
| elastic modulus | 29,000 ksi (200 GPa) |
| density | 7.85 g/cm³ |
| Manufacturing tolerance standards | AISC 303, ASTM A6 |
| Surface treatment | Shot blasting to remove rust at Sa 2.5 grade, pre-coated with epoxy zinc-rich primer. |
| Common connection methods | High-strength bolt connection (A325/A490), welding |
| Fire protection compatibility | Fire-retardant spray, intumescent coating, gypsum board wrapping |
| Recycled material content | > 90% (mainly recycled scrap steel) |
Structural Steel for Multi-Family Buildings for people
Real Estate Developer
Developers seeking a fast return on investment (ROI). Using the rapid construction characteristics of structural steel, multi-family residential projects can be delivered to the market months in advance, thereby greatly saving financing interest and speeding up the return of funds.
General Construction Contractor
Contractors facing tight deadlines and restricted construction sites. Off-site prefabrication and just-in-time (JIT) delivery of structural steel reduces the need for on-site material stacking, reduces construction noise and dust interference, and facilitates project management in urban centers.
Modular Building Manufacturer
Businesses that focus on prefabricated multi-family homes. The high-precision tolerance and high-strength-to-weight ratio of structural steel make it an ideal material for modular unit frames, capable of withstanding dynamic loads during transportation and lifting.
High-rise Apartment Architect
Designers who need flexible space layouts. Through the large span capacity of the steel structure, an open floor plan is designed to allow residents to freely customize space in non-load-bearing wall areas, enhancing the market appeal of the property.
Structural Steel for Multi-Family Buildings Raw Material/Material Description
The main raw material of this product is high-quality carbon structural steel smelted by electric arc furnace (EAF) process. The core components include iron (Fe) and controlled amounts of carbon (C <0.23%), manganese, silicon. The raw material contains more than 93% of recycled scrap steel, which is refined to remove impurities such as sulfur and phosphorus, ensuring that the material has excellent ductility and weldability, and meets the ASTM A992 metallurgical standard.Structural Steel for Multi-Family Buildings life and after-sales service
Pre-sales and after-sales service
Provide Tekla 3D in-depth design and structural optimization suggestions before sales; provide complete component installation instructions, on-site technical support, and a 2-year quality assurance service for welds and coatings after sales.
Expected service life and description
With proper anti-corrosion maintenance and fire protection, structural steel frames used in multi-family houses can have an expected service life of more than 75-100 years. It is recommended to check the anti-rust layer of hidden parts every 5-10 years.
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FAQ
What is the cost of structural steel for multi-family housing compared to wood?
Although the initial material cost of structural steel may be higher than that of wood, considering its faster construction speed (reducing labor and financing costs), lower insurance rates, and longer service life, in multi-family housing projects with more than 4 floors In China, the comprehensive total cost of ownership of structural steel tends to be more competitive.
What is the sound insulation effect of steel structure in multi-family houses?
The structural steel itself transmits sound faster, but in multi-family residential applications, through the use of acoustic decoupling floor system, concrete composite floor and the wall filled with sound-absorbing cotton, can effectively block the air sound and impact sound, to achieve STC 50 above the sound insulation standards.
How does this product meet the fire code for multi-family homes?
Structural steel, although non-combustible, decreases in strength at high temperatures. We ensure that the structure meets the 2-3 hour fire resistance rating required by the specification by spraying fireproof coating on the surface of steel beams and steel columns, wrapping fireproof boards or pouring concrete protective layers to ensure the safety of household evacuation.
Is this steel suitable for multi-family residential projects in coastal areas?
Suitable, but requires special anti-corrosion treatment. For coastal high salt spray environment, we recommend the use of hot-dip galvanizing treatment or painting high-performance epoxy zinc-rich heavy anti-corrosion coating system to prevent chloride ion corrosion and ensure structural durability.
Does this structural steel support the construction of hybrid structures (such as Podium construction)?
Very supportive. In the common Podium design of multi-family houses, structural steel is often used as the support frame of the bottom commercial or parking floor, and the light steel or wood structure residential unit is built above, and the high bearing capacity of the steel is used to support the upper load.
What is the lead time for ordering custom structural steel for multi-family homes?
Typically, it takes 4-6 weeks from confirmation of deepening drawings to shipment of the first components. The specific time depends on the tonnage of the project and the processing complexity. We recommend to intervene early in the project to allow sufficient time for raw material procurement and scheduling.
