Pits: there can be no patches of pits, and dispersion and trace amount are allowed. Scratches: no scratches or too deep scratches, no leakage from the bottom plate, and dispersion and trace existence are allowed. Gap: the gap should be waterproof, and cracks, lack of welding and loopholes are no... READ MORE
2025 China Spring Festival holiday time of our factory. Holiday time for the Spring Festival in 2025: January 25th to February 4th, and return to the office on February 5th. When the Spring Festival comes in year of the snake in 2025, you can use the following greetings to express your wishes to y... READ MORE
Appearance quality requirements: Point defects: the diameter shall not be greater than 0.4mm, and there shall not be two particles with a diameter greater than 0.4mm within the range of 100mm, and the total number of the same appearance shall not exceed 3. Shadows, orange lines, exposed bottom m... READ MORE
Benefits of Custom Access Doors Custom access doors offer many advantages for improving the functionality, security, and appearance of commercial buildings. Enhanced Aesthetics Custom access doors can be integrated into a building’s design, enhancing its aesthetic appeal. They can match any architec... READ MORE
Benefits of Fire-Resistant Access Doors Fire-resistant access doors offer a solution that combines functionality with code compliance. Here’s how they can benefit your building: Enhanced fire protection: Fire-resistant access doors are tested and certified by the UL organization. These doors slow th... READ MORE
Understanding Codes and Fire Access Doors Fire access doors are critical to ensuring compliance with building codes and regulations. Although there are regional variations, building codes require fire doors to be installed in specific locations to prevent the rapid spread of fire and ensure timely e... READ MORE
Dear Friend I wish you a merry Christmas in 2025 and good luck in the New Year. I also hope that in 2025 we will have the opportunity to cooperate and make our products better together! :) READ MORE
The detection methods commonly used in our factory include: Visual inspection method: carry out visual inspection according to standardized data, and judge whether the surface smoothness, color consistency and other aspects meet the requirements with experience. Defect detection method: use micr... READ MORE
The quality requirements of plastic-sprayed surface of manhole products mainly include the following aspects: Surface smoothness: the plastic spraying surface should not be too convex or concave, and there should be no obvious defects such as sand holes and bubbles to ensure the beautiful appearan... READ MORE
The fireproof grade and fireproof time of galvanized sheet mainly depend on its material and coating. The fire protection grade of galvanized sheet is usually divided into Grade A, B1, B2 and B3. Class A is incombustible, Class B1 is incombustible, Class B2 is combustible, and Class B3 is combus... READ MORE
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