Wardrobe brand wooden door brand stainless steel Galvanized Roller Shutter Door
Using advanced hot-dip galvanized material , precision roll forming production process, polyurethane foam that free of hydrofluorocarbon inside door, light weight, high strength, appearance nice. The doors have advantages of tamper anti-theft , noise isolation thermal insulation and corrosion resistance;the doors are widely used in shops, garages, houses, supermarkets, warehouses and industrial plants,etc.
Depending on the characteristics of the buildings,we can choose interior, exterior and intermediate three different installation ways, doors stay in the upper part of door after rolling up , this could save garage space, and also could keep the garage clean and beautiful by prevent the mud, rain and snow ,etc going into the garage.
Galvanized Roller Shutter Door,Standard Galvanized Roller Shutter Door,Automatic Galvanized Roller Shutter Door,Steel Roller Shutter Safe Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.spiralfastdoor.com
Second, the surface treatment Surface treatment is roughly divided into three kinds of electroplating, spraying and coloring, through the surface treatment to form a layer of dense protective film on the surface of the product, play a role in anti-corrosion and rust, make the product more beautiful and durable. At the same time, it is also a measure of product quality. Good quality locks are mostly plated. The coating is delicate and smooth, even and moderate, bright in color, free of bubbles, signs of rust and oxidation.
Three to see the implementation of standards abroad Hardware locks have very strict standards, so the quality of imported products is relatively high. At present, the Ministry of Light Industry has borrowed some foreign standards to revise the original implementation of GB into the current higher requirements of QB. Branded manufacturers are already implementing the QB standard. Small manufacturers are still implementing the original GB standards. Understand the product's implementation standards.
Four hands can feel good or bad locks. In general, the feeling of heavy locks, the quality is relatively high; the lock body can not be exposed, the exposed point is easy to hurt, in particular, should pay attention to the lock handle end, the lock tongue and the lock body four corners; lock spring good lock open flexible With high sensitivity and long service life.
How to choose the door lock
A look at the lock material on the material market is basically divided into stainless steel, copper and zinc alloys. Stainless steel with high strength, strong corrosion resistance, no discoloration, is the best lock material; copper is more general, superior mechanical properties, higher prices; high quality zinc alloy is sturdy and wear-resistant, corrosion resistance, and easy to mold, multi-purpose In the middle lock.