Precision range The precision range of conventional commercial models is ±0.01mm to ±0.05mm, and the precision of fiber laser (metal cutting) is higher, and the high-end models can reach ±0.01mm. When the mainstream laser cutting machine cuts metal plates, the accuracy is usually between ±0.05mm and... READ MORE
The fire protection grades of plastics are mainly classified according to UL94 standard, and the common grades are HB, V-2, V-1, V-0, 5VB and 5VA from low to high. This standard is formulated by the American Underwriters' Laboratory and used to evaluate the flammability of plastic parts of equipme... READ MORE
When durability meets heavy-duty traffic, steel wins every time. Our galvanized steel access panels are engineered for commercial projects where strength is non-negotiable. Unlike plastic, steel resists warping, cracking, and corrosion. If you are installing in ceilings, walls, or industrial zones, ... READ MORE
Standard installation steps Positioning opening According to the drawing, cut the roof insulation layer and waterproof layer (keep the integrity of the structural layer), and trim the edge of the hole. Reinforce the border Add additional keel or welded steel frame around the hole, fix it firmly and ... READ MORE
Toxic Source and Risk Rule of Metal Glue The safety risk of metal glue has obvious stage differences, and it is not highly toxic in the whole process. The core risk is concentrated in the liquid construction and semi-curing stage. Volatile Organic Compounds (VOC): Solvent-based metal adhesives of... READ MORE
The methods for rust prevention and the good moisture-proof effect of iron products mainly include the following points: First, the use of stainless steel alloy Stainless steel is made by adding metal elements such as chromium and nickel to ordinary steel. The internal structure of stainless stee... READ MORE
Core Standards and Applicable Scenarios Class C fire door: the fire resistance limit is ≥0.5h, and it is used for the inspection door of vertical shaft such as cable shaft, pipeline shaft and smoke exhaust duct on ordinary floors. Class B fire door: the fire resistance limit is ≥1.0h, which is mand... READ MORE
Key performance and application matching Lightweight+high strength-aerospace: accounting for more than 80% of the aircraft structure quality (such as 2000/7000 series ultra-hard aluminum); Transportation field: automobile weight reduction improves energy efficiency, and ships are resistant to seaw... READ MORE
Different grades are mainly distinguished by burning time, dripping and burning through: Extinguishing time: V-0 requires that the fire source be extinguished quickly within 10 seconds after being removed, and V-1 and V-2 are allowed to be extinguished within 30 seconds. Drops: V-0 and V-1 are not... READ MORE
The fire protection grade of ABS is mainly divided according to UL94 standard, and it is divided into six main grades: HB, V-2, V-1, V-0, 5VB and 5VA from low to high. Among them, V-0 is a high flame retardant grade commonly used in electronic and electrical industries, and 5VA is the grade. all ... READ MORE
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