Q:How can a steel-steel pulley change it? Thank you!

First in the door on the cover to go down (in the material is the plane of the plane, with a flat screwdriver from the above or below the port pry open), and then lift the door up the whole, the following can be withdrawn from the track, After the pulley is changed, the door can be loaded in the reverse order. Hope you can understand.

Q:Steel doors and aluminum alloy door which is good

Both have their own advantages and disadvantages, and corresponding to the different decorative environment should be used the most suitable door, so as to play a more perfect effect: 1, wind pressure strength and watertight performance: As the plastic steel door material strength and rigidity is relatively low, although after processing steel to enhance, but its wind pressure and watertight performance than aluminum level lower one level. According to the end of 1998 OKorder enterprises to submit 425 batches of steel doors three examples of performance analysis seriously pointed out that "plastic doors in high-rise buildings should be used with caution." So, in the high-rise building, we use the most suitable aluminum alloy door. 2, airtight performance: Plastic doors because of the box, fan parts are welded, so the air tightness should be slightly better than the screw of the aluminum alloy door, but the aluminum profile height accuracy, box, fan with more closely, so the two are still in At a level level. ? 3, insulation performance: Aluminum door insulation performance as plastic steel door is good, but the two of the whole heat transfer coefficient ratio is only 1.36 times (single door) and 1.44 times (single frame double glass door).

Q:What is the difference between steel-plastic doors and steel doors?

The two components are different, steel-plastic doors better than steel doors. Both have their own characteristics. Steel is the main component of PVC-U extrusion molding of doors and windows materials, which is a building materials plastics. The full name of steel and plastic is a total of plastic and plastic, is the use of PVC crust micro-foam, and special-shaped steel lining co-extrusion method, and then by high-strength steel angle components into a door and window products. This high-tech patent products available, successfully overcome the ordinary steel doors and windows exist wind pressure performance, can not be high-rise building problems. At the same time also played the advantages of two kinds of steel materials - plastic micro-foam technology, excellent insulation, insulation, and high-strength type of special-shaped steel. Steel plastic materials also have no deformation, long life, environmental protection and other advantages.

Q:How to make steel doors

Plastic steel door manufacturing: steel doors are generally used in the factory with steel doors dedicated cutting, welding equipment manufacturing, is semi-automatic, automated production, quality can be guaranteed.

Q:How to get steel doors and windows installed qualification?

China's doors and windows are required to install the relevant professional contract qualification. Enterprises need to apply for relevant qualifications, and through, before undertaking the relevant projects. Door and window engineering contractor qualification is divided into one, two, three. Door and window installation qualification Application conditions: 1, the company nearly two years to undertake the following three items in more than two metal doors and windows construction, project quality qualified. (1) metal doors and windows of buildings of 6 or more buildings; (2) area of ??1000 square meters above the metal doors and windows works; (3) single contract amount of more than 1 million yuan of metal doors and windows works. Note: the new business can not provide. 2, business managers with more than 2 years of project management experience; technical person in charge with more than 5 years engaged in metal doors and windows construction technology management experience and has the relevant professional intermediate titles; financial executives with intermediate or above accounting titles. Enterprises with titles of engineering and economic management of not less than 8 people, including engineering and technical personnel of not less than 5 people; engineering and technical personnel, with more than mid-level titles of not less than 3 people. Enterprises with two construction division of not less than 3 people. 3, the registered capital of more than 100 million enterprises, corporate net assets of more than 1.2 million. 4, the enterprise nearly two years the highest annual settlement income of more than 3 million yuan. (Note: new business does not provide) 5, the enterprise has a metal doors and windows processing, production of the plant area of ??not less than 500 square meters, and a matching processing, production, installation equipment and testing equipment.

Q:What are the specific models, and how to define

Each production profiles are not the same, the smallest 50 # series. 60 # .77 # .80 # .85 # .87 # .88 # .90 # and so on

Q:New house put a few years without decoration, is now under the renovation of steel doors and windows have found a yellow rusty kind of things, how to wash away?

First, will be fully sprayed with detergent, and then adhere to the plastic wrap, so that the solidification of softening oil, after 10 minutes, tear off the plastic wrap, then wipe with a damp cloth. The pattern of the ground glass dirty, with a toothbrush with detergent, along the pattern of circular motion wipe, while the toothbrush in the following strip cloth to prevent the dripping of sewage. When you want to remove the stickers attached to the glass, you can use the blade carefully scraping the stickers, and then nail polish to light water to wipe, you can all removed. Simple clean plastic steel doors and windows of the method, can be wiped with vinegar cloth wipe. In addition to easy to grease the cupboard glass, found a serious grease, the onion can be used to wipe the slices, so that the glass clear a new look. The use of plastic wrap and detergent with a damp cloth can also be often stained with oil doors and windows to regain new life.

Q:Please answer directly, thank you

No more than 200

Q:Plastic doors and windows of the glass if broken, how to change it?

Fixed glass, then directly to the pressure out of the glass for it.

Q:Plastic steel door titanium door which is good

It depends on your request. Plastic doors Features: good insulation, sound insulation is good, the disadvantage is only one-way open, the switch is not very convenient, easy to deformation fall, the door hinge will adjust. Titan door features beautiful and bright, modern atmosphere, open the direction of freedom, easy maintenance and practical, the shortcomings of the closed is not good noise is not good. The vast majority of shops are selected titanium door, showing its better than steel doors.