PDA Steel Door Window Systems is one of the leading manufacturers and suppliers of 70sd55 ultra big door. If you're going to wholesale the newest 70sd55 ultra big door, welcome to get quotation from our factory. All customized products are with high quality and competitive price.
Material and Surface Treatment
• Thermal break steel profile: cold-formed steel profile + fiberglass polyurethane thermal insulation.
Hardware System
• Compatible with European standard hardware.
• PDA Custom welded hinge.
Applicable Products
• Suitable for extra-large steel fire-resistant doors.
Technical Features
• Excellent thermal insulation performance: when paired with energy-efficient glass, it can achieve a U-value of 1.2 W/(m²·K).
• Water tightness: with the injection molding process, it offers improved water tightness.
• Lightweight profile design.
Product Dimensions
• Supports large-size customization to meet various architectural needs.
Performance Ratings
• Wind Load Resistance: Class 5
• Water Tightness: Class 4A
• Air Permeability: Class 4
