YXB65-220-660 Closed Rib Steel Deck

Introduction to YXB65-220-660 Floor Deck

1. Product Overview

YXB65-220-660 is a closed-type profiled steel floor deck designed for modern steel structure buildings, featuring high strength, convenient construction, and excellent fire resistance. Its naming convention is as follows:

• YX: Profiled steel sheet (abbreviation of Yuxing in Pinyin);

• 65: Wave height of 65mm, providing stronger structural support;

• 220: Wave pitch of 220mm, optimizing stress distribution of the sheet;

• 660: Effective coverage width of 660mm, with a feeding width of 1000mm and material utilization rate of approximately 66%.

2. Core Parameters and Performance

Materials and Specifications

• Base Material: Cold-rolled hot-dip galvanized steel sheet (zinc coating ≥275g/m²), thickness range 0.75~1.5mm, compliant with GB/T 12755 standard.

• Dimensions: Wave height 65mm, wave pitch 220mm, effective width 660mm, suitable for large-span floor requirements.

Mechanical Performance

• Load-Bearing Capacity: The 65mm wave height design significantly enhances bending resistance, with unsupported spans reaching over 3m, making it suitable for large-space buildings such as industrial plants and logistics warehouses.

• Fire Resistance: When combined with concrete, the fire resistance limit reaches 2 hours, meeting fire safety standards for high-rise buildings.

Construction Advantages

• The closed-rib design enhances concrete bonding strength and prevents deformation during construction;

• The flat bottom surface eliminates the need for suspended ceilings, saving time and costs.

3. Application Scenarios

• Industrial Buildings: Large-span structures such as power plants and logistics warehouses;

• Public Facilities: Projects with high fire safety requirements, such as stadiums and exhibition centers.

4. Economic Analysis

• Material utilization rate of 66%, saving more steel compared to traditional open-type floor decks;

• Construction efficiency increased by over 30%, with significant overall cost advantages.