Available for Wholesale Steel Structures Houses Prefabricated Steel Building Kits

• Customization: Available
• After-sales Service: Online
• Connection Form: Bolt Connection
• Model NO.: AiSi/ASTM/BS/DIN/GB/JIS/EN
• Feature: Anti-Corrosion, Earthquake Resistance, Easy To Install, High Intensity, Recyclable
• Install: Online Guidance
• Brand: Lianfeng
• Material: Q235B, Q355b, A36, S235jr, S355jr, etc
• Surface Treatment Shot Blasting: SA2.5 + Primer / Hot-DIP Galvanized / Painted
• Service Life: 50 Years (Design Life)
• Application: Rural Self-Built Houses, Staff Dormitories
• Transport Package: Bundle / Steel Crate / Plastic Wrap + Edge Protect
• Specification: 200×70×20×1.8
• Trademark: None
• Origin: China
• Package Size: 1200.00cm * 200.00cm * 200.00cm
• Package Gross Weight: 26000.000kg

Product Description

Product Description

Steel Framed Houses

Residential steel structures use high-strength steel (such as Q235B, Q355B, etc.) as the main load-bearing frame, featuring high strength, light weight, and excellent seismic performance. All components are prefabricated in the factory for fast on-site assembly, resulting in a short construction period and low environmental impact. The steel frame allows flexible floor plans with regular interior space, easy for partitioning and decoration. It is mainly used for rural self-built houses, staff dormitories, resettlement houses, camp housing, and temporary residential buildings. Buyers benefit from faster delivery, higher safety performance (meeting seismic grade 8), low maintenance cost, and the eco-friendly advantage of recyclable materials, with a service life of over 50 years.

Key Features

High strength-to-weight ratio, excellent seismic performance. Lightweight frame reduces foundation load. All components prefabricated for fast, precise on-site assembly.

Functions

Forms the main load-bearing skeleton of residential buildings, supporting floors, walls, and roofs. Allows easy integration of insulation, wiring, and plumbing. Can be expanded or relocated as needed.

Main Applications

Rural self-built houses, staff dormitories, resettlement housing, camp accommodation, and temporary residential units.

Advantages for Buyers

Fast construction – prefab assembly reduces build time by 30-50% compared to concrete.

Safe & durable – meets seismic grade 8 standards; service life over 50 years.

Cost-effective – optimized steel design lowers material and labor costs.

Flexible interior – regular column layout allows easy room division.

Eco-friendly – 100% recyclable materials, low construction waste.

Specification

Section Type	Common Height/Width Range (mm)	Flange/Web Thickness Range (mm)	Length Range (m)
Welded H-Beam	100-1200	6-40	6-18
Hot-Rolled H-Beam	100-900	5-35	6-18
C/Z Purlin	80-300	1.5-3.0	4-12
Square/Rectangular Tube	20×20 – 500×500	1.5-16	4-12
Round Steel Pipe	Φ21.3 – Φ630	2.0-20	4-12
Angle Bar	20×3 – 200×24	3-24	6-12

Component	Material Grade	Specification Range	Notes
Main Frame (Column & Beam)	Q235B, Q355B, S235JR, S355JR, A36	H-section: 150×150 – 1000×500 mm	Welded or hot-rolled, customizable
		Web thickness: 6-40 mm
		Flange thickness: 8-60 mm
Roof Purlin	Q235B, Q355B, S235JR	C or Z section: 80-300 mm height	Galvanized or pre-painted
		Thickness: 1.5-3.0 mm
Wall Purlin	Q235B, Q355B, S235JR	C section: 80-250 mm height	Galvanized or pre-painted
		Thickness: 1.5-3.0 mm
Bracing (Cross, Horizontal, Tie Bar)	Q235B, Q355B	Round bar: Φ12-30 mm	Galvanized finish available
		Angle bar: L50×5 – L100×10
Column Base Plate	Q235B, Q355B	Thickness: 12-40 mm	Anchor holes pre-drilled
		Size: 200×200 – 600×600 mm
High-Strength Bolt	10.9S / 8.8S (GB/T 1231)	M16 – M30	With nut & washer, galvanized or plain
Ordinary Bolt	4.8 / 5.6 grade	M12 – M24	Galvanized or plain
Roof Panel	PPGI, color steel sheet	Thickness: 0.4-0.8 mm	Single sheet or sandwich panel (EPS/PU/Rockwool)
		Effective width: 820/840/900/1020 mm
Wall Panel	PPGI, color steel sheet	Thickness: 0.4-0.6 mm	Single sheet or sandwich panel
		Effective width: 820/900/950 mm
Purlin Clamp / Connection Plate	Q235B	Customized sizes	Galvanized or painted
Foundation Bolt (Anchor Bolt)	Q235B, Q355B	M16 – M48, length 500-2000 mm	With nut & washer, galvanized
Steel Decking / Floor Plate	Q235B, Q355B	Thickness: 0.8-1.5 mm	For mezzanine floor
		Profile: 51-200 mm height