Quick detail:
Multi-storey apartment houses and buildings planning design and construction cost price by Chinese Builder Contractor Company

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

Specification:

Material:	specification:
Length	As customer’s requirement
Width	As customer’s requirement
Height	As customer’s requirement
Column	H shaped,Q345
Beam	H shaped,Q345
Purline	C/Z shaped,Q235/Q345
Brace	Round bar,Q235
Knee brace	Steel angle,Q235
Tie bar	Steel round tube,Q235
Roof panel	single steel sheet /sandwich panel/UPVC Panel
Wall panel	single steel sheet /sandwich panel/UPVC Panel
Gutter	0.8mm steel sheet/1.2mm steel sheet/3mm steel sheet
Rain Pipe	DN110mm PVC rain pipe

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 square meter
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

OUR ADVANTAGES

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 specifications.

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 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.