The hinge is the most important part of the door hardware accessories,and it is absolutely necessary on the installation of the doors and windows.
There are many types of the hinges,and generally can be divided into four types.
1. The ordinary hinge:the hinge is used to the cabinet door,windows and doors.And it made of iron,copper and stainless steel.But its disadvantage is not processed with the function of  spring hinge.After installing the hinge,the ball should be installed then,if  not,the door will be blown by the wind.
2. The pipe hinge: is also called as spring hinge.And it is mainly used as the connector of the furniture door,and its ordinary requirement is 16~20 mm.It can be made of galvanized iron and  zinc alloy.And the spring hinge is attached with the adjusting screws,which can adjust the height and thickness of the adjusting boards.And one of its features is that it can fit in with the opening angle of the cabinet door according to the space.Except for the normal angle like 90°,the angles like 127°,144°,165°,has the related hinges to be matched,and which can be matched with related strength.
3. The gate hinge: it can be divided into the normal type and the bearing type.But the normal type is mentioned before.And the bearing type can be made of copper and stainless steel.And  according to the current consumption situation, the copper bearing hinge  is more popular.Because of its beautiful pattern and moderate price,and it is assembled with the screws.
4. The other types of hinges:There is glass hinge,mesa hinge and flip hinge.And the glass hinge is used to be installed on the frameless glass cabinet,and the thickness of the glass should be less than 5~6mm.