1. Materials advantage
1) Steel galvanized layer thickness: general area of the structure
of the galvanized layer thickness of two sides is 180g/m2 (American
Standard G60, single-side galvanized layer thickness of 13μM),
strong corrosion area of not less than 270g/m2 (American Standard
G90, single-side galvanized layer thickness of 20μM )
2) Durability: steel structure residential housing can prolong
life, structure life up to 100 years
3) Earthquake resistance: application to the seismic intensity of 9
degrees above the region
4) Designing usage steel weight: 25-35kg/m2 (construction area)
5) Floor load: 250kg/square
2. Foundation system
Prefabricated villa keel structure with strip foundation, because
the building lightweight, force bearing layer requirements is not
high, endurance of every square meter 8-13 tons can meet the
requirements, the foundation is usually 600 to 800 feet wide, base
width is 180-200mm, depth as the geological conditions and the
winter of frozen soil layer depends on the thickness, depth to dig
to no disturbance of soil, if backfill, follow the endurance
requirements for backfilling, based on the depth should be over
winter frozen layer thickness
3. Floor system
Floor system of prefabricated villa is composed of cold-formed
steel frame, beam, floor OSB structure board, supports, and
connecting parts, materials used are oriented strand board, fiber
cement board, and plywood, light floors can load 316-365 kg per
4. Wall system
Wall body of light steel structure is mainly composed of wall frame
top beam, wall, wall bottom beam, wall support, wall panels and
connecting components, prefabricated villa use inner transverse
wall as bearing wall, wall column is C shaped light steel, wall
thickness depend on the load, usually 0.84-2 mm, it is 400-600 mm
between wall column spacing, light steel structure housing the wall
structure arrangement, can effectively bear and transfer vertical
loads and the arrangement is convenient, but the light steel
structure house wall structure cannot bear horizontal loads
5. Flat roof system
Prefabricated villa keel structure of flat roof has two forms, one
is no parapet wall but with bar and another is with parapet wall
Why is it the best way to choose HONGFENG for you?
1. we have capabilities to custom fabricate to almost any
requirements a customer may have.
2. Like everything we do at HONGFENG, we offer structural
fabrications to the customer’s requirements, so the degree of
strength and reinforcement is based upon your needs and
3. Our HONGFENG yearly sales revenue are pioneering in China
structural steel industry, with plentiful of project experiences,
most advanced production lines and equipments, as well as most
competitive price which makes us prospect long time in steel
structure design, detailing, fabrication and erection field.
4. Our honored workers also focus on every detail rangeing from
steel construction,support systems for excavation works, bolt
connections, structural anchor bolt construction, bracing of roof
structures, weld connections and visual inspection of weld, tubular
construction, fire protection, corrosion protection of steel work,
steel fabrication, steel erection and site safety, to material and
steel specifications etc.
5. From material purchase and tracing, planning compilation,
drawing detailing, production arrangement, quality inspection, to
on-going painting, packing and delivering, we have separated
department to strictly control process, quality and traceability.
Packaging & Delivery
Packaging Detail: Seaworthy packings into container or bulk vessel.
Delivery Detail: Based on client's needs.
The company has over 1,200 employees of whom 206 are engineering
technicians of all levels and all kinds and over 60 are state GradeⅠ, Grade Ⅱ registered structure engineers,
builders and architects.
The company has senior colleges and professional technology design
organizations as the technology backup force and has established
wide cooperation and R&D relations with such technology
research institutes asZhejiang University, Northwestern Polytechnical University, Zhejiang Shuren University, etc.
Welcome to visit our Group!