Q:Their own security door, every time the door is very costly to open the door. Lock the door when the door handle up to mention, very easy. But when the door open, whether it is inserted into the key from the outside open, or from the inside down the door handle, it is difficult to open the door, that a few out from the door that a few columns (Figure) is difficult to retract Inside the door. What is the cause of this? What steps need to be done to make it switchable? More

You have no oil, and now the lock is not oil, if they have all inside will be tired of the inside. This can only change the lock core.

Q:Has been transferred once, but the distance between the door and the door frame is too close, the door is very tight switch! Ask you how to adjust the master? The Do not let me find unlock, has tried! Thank you! More

Is the hinge of the sea is a dark hinge! Adjust the method is not the same! Dark hinge adjustment more trouble, the hinge on the trouble point! I am engaged in anti-theft door design. Have any questions to find me!

Q:How to determine the security door is good or bad

I will give you a way to judge the soil, good doors are more heavy. Believe i'm not wrong

Q:Home ventilation is not good, would like to install the door on the security door, what kind of screen door is good?

You can consider the Viagra can be anti-theft sand door, ventilation and anti-mosquito anti-theft, beautiful and beautiful, the net is to use the 304 attack Chuang boiling boiling degree of sand spines made of stainless steel mesh, the frame is aluminum magnesium alloy, If your anti-theft door is open, it is installed on the outside, if the security door is open on the inside installed, open side, in the friend's recommendation, I have installed, and feel good, recommend to you, Hope you can be satisfied

Q:Would like to ask often say that the left hand to open and right hand to open what is the left hand open and right hand to open Thank you !!!! more

The routine is that people at the door, hinge in the left, is left outside the open, hinge in the right is the right to open.

Q:My home security door is the nineties of the product, the key is a cylindrical iron bar, no key teeth of the kind, is said to rely on magnetic force to open the door. Daughter and wife's keys have been lost, and now only a key Fan Fan Dayton locusts Hao Hao rudder penalty fine, and this key in general with the key place that can not match. Who knows how this key is? More

You are talking about the magnetic automatic lock, which is now a good match, only for the lock cylinder

Q:Want to buy anti-theft door, I do not know galvanized steel and cold-rolled steel plate where the difference? The same thickness which is good? The

The difference between the two is mainly on corrosion resistance. Galvanized steel plate billet of the immersion of the solid solution of thick concrete floor rafters, long service life. Cold rolled plate must be painted outside, otherwise it is easy to rust. Galvanized sheet prices will be more expensive.

Q:General anti-theft door hole size 2100 * 1000, the net size of the door is how much

Various manufacturers of different standards, but 2070 * 960,2050 * 950 of these two kinds of more

Q:What is the standard size of the double-entry security door?

Double open anti-theft door without standard. Only a single door, 960 ** 1 chicken 紶 etoposide correction point Han Han film 970 child door (thirty seven) 1160 ** 2050

Q:Solid wood doors and security door price difference

Solid wood doors are indoor doors, security doors are outdoor doors, the price is not comparable. If you really want to, then, solid wood doors to a little higher. Solid wood door price in 2500 up, the security door is estimated at around 1500. This price should be a better anti-theft door.