1. Overall Performance 1.1 Complies with the requirements of XF633-2006 "Firefighter's Rescue Protective Clothing" standard. A copy of the test report issued by the Qingdao Station of the National Light Industry Footwear and Leather Quality Supervision and Inspection Center has been provided. 2. Style and Structure 2.1 Consists of outsole, heel, upper with comfort layer, insole with puncture-resistant layer, and insock.
2.2 The main material of the boot upper is black flame-retardant cowhide and aramid grid fabric; the sole is rubber one-piece molded. The upper features 6 pairs of rust-proof eyelets; laces are made of aramid material. A quick-release buckle is designed above the tongue, colored black, made of engineering plastic, with a lace storage design. The front quarter is reinforced with flame-retardant rubber patches.
2.3 The height from the center of the inner heel to the lowest point of the boot opening is 190±10mm. The rear upper is designed with an ergonomic U-shape to facilitate natural leg bending during firefighter operations.
2.4 Silver reflective strips are present on both sides of the upper; a cowhide pull tab is located at the rear upper, featuring silver reflective strips.
3. Technical Performance
3.1 Total weight of the shoe: 1.6 kg (Size 40). 3.2 Upper
3.2.1 Flex resistance: Fully compliant after 20,000 cycles according to QB/T3812.9-1999 testing.
3.2.2 Abrasion resistance: ≥20,000 cycles.
3.2.3 Cut resistance: According to XF633-2006 (7.23) testing, leather areas were not penetrated.
3.2.4 Mechanical puncture resistance: 231N.
3.2.5 Heat penetration resistance: Inner temperature rise 17.3°C.
3.2.6 Abrasion resistance of upper lining material: ≥20,000 cycles.
3.2.7 pH value of upper leather: 5.3.
3.3 Sole
3.3.1 Mechanical puncture resistance: 2407N.
3.3.2 Flex resistance: After 100,000 flex cycles, outsole crack length was 5.5 mm (left foot) and 5.3 mm (right foot).
3.3.3 Outsole hardness: 70.
3.3.4 Upper-to-sole peel strength: 138N/cm (left foot), 142N/cm (right foot).
3.4 Slip resistance of finished shoe: 25.7°.
3.5 Electrical insulation performance: Leakage current 0.16mA at 10KV test voltage.
3.6 Thermal stability: At (180±5)℃ for 5 minutes, no melting occurred in any part, and all hard accessories maintained integrity.
3.7 Insulation performance: Inner temperature rise 14°C.
3.8 Flame retardancy: Damage length ≤45mm for toe cap, front quarter, tongue, rear upper, and heel. Self-extinguishing time off-flame 0S; no melting, dripping, or delamination occurred.
