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How to identify:
A: Whether the quality of steel door panels is imported or not, the easiest method is to use the medicine reagents to be more professional.
The second is to see if the surface of the plate has a final axis. If so, it is not import data. If it is imported, that is, after heat processing, there are few impurity-impregnated materials on the appearance of the final surface of the plate, only the brushed surface of the drawing pattern.
2. The thickness of steel door panels. If 1.0. = 0.9 is normal. Many of the current market reach 0.9 only 0.85-0.88 This is a sign of cutting corners. Do not take the national standard to deceive people. When importing materials to the board, all the targets are the actual size. For example, if the 1.0 sheet is non-power 1.0-1.02, then the matte processing is the negative difference of about 0.04-0.05. However, a thicker sheet will be more negative than a negative one. In order to make it more environmentally friendly, the sheet will be thicker, and no filler material will be added inside the door. Therefore, the thickness of the door panel is more than 1.2.
III. Door flower materials. If you have the financial ability, please choose the solid flat steel door, because now the outside of the hollow pipe door is too fake (with outside the glass, the layman can not see it is good or bad.
Solid door flower: It depends on its external polishing brightness. Import \ Domestic optional...
Imported flat steel material, with a small arc of curvature, uniform camber.... No cracking status.....
Product use: After the door is installed, within 24 hours, the number and intensity of door opening and closing shall be reduced as much as possible so as to avoid the deformation of the door frame caused by looseness.
2 When you open or lock the door, you should look for the key to place the key and do not use force to twist it;
3 When the owner is indoors, if no outsider is needed, please turn the lock's safety knob to the lock;
4 When the lock tongue protrudes outside the door, do not bang it to avoid damage to the tongue and door frame.
Product Maintenance:
1 If there is dirt or dust on the surface, please wipe it with a soft cloth or water, and do not use corrosive substances to clean it, so as not to react with the material and cause data rust;
2 After using for a long time, a small amount of lubricating oil should be added to the hinge at regular intervals once a month so that the door leaf can be switched flexibly;
3 Add graphite or pencil powder to the keyhole once every six months for lubrication. Do not add any liquid oil to the keyhole.
Building materials catty plate switch glass door
JIS B2220 Flanges specifies steel pipe flanges (hereafter referred to as "flanges")of nominal sizes 10 A to 1500 A for nominal pressures 5K, 10K, 10K light type, 16K, 20K, 30K, 40K and 63K which are used to join parts for piping, such as steel pipes and valves used for ordinary piping pressure piping , high pressure piping , high temperature piping , alloy steel piping and stainless steel piping for steam, air, gas, water, oil, etc.
JIS B2220 Flanges,JIS Flange,10k Flange,Forged JIS Flanges
Shandong Zhongnuo Heavy Industry Co.,Ltd. , https://www.znforged.com