Fire door Fire resistance Fire door How much is a square

The fire door is a door with a certain fire-retardant function. In a certain period of time, fire resistance and heat insulation meet the requirements. Its main function is to prevent the spread of fire and diffusion of smoke in a certain period of time. Mainly used in areas such as stairwells, fire partitions, etc. where people have relatively high traffic. Fire doors can be divided into three grades, namely A, B and C. What do you know about the fire endurance of Class A fire doors? How much is a fire door ? If you are not sure, then let's take a look at the small series.

Class A Fire Door Fire Limit

Fire doors can be divided into three levels, they are A, B, and C levels, Class A fire doors fire resistance is 1.50 ~ 2.00h, Class B fire doors fire resistance is 0.50 ~ 1.50h. According to the actual situation in our country, the fire threshold of the lowest fire door has been specified, they are: Class A 1.50h, Class B 1.00h, Class C 0.50h.

1. Class A fire doors: Class A fire doors, also known as fully insulated fire doors, can meet the requirements of fire-resisting, heat-insulating and fire-resistant integrity at the same time, and the fire-resistance grades are 0.5h (Grade C). ), 1.0h (grade B), 1.5h (grade A) and 2.0h, 3.0h.

2. Class B fire doors: Class B fire doors, which are called insulated fire doors, have a fire-resisting insulation requirement of 0.5 h and fire-resistance integrity ratings of 1.0, 1.5, 2.0 and 3.0 hours, respectively.

3. Class C fire doors: Class C fire doors, also known as non-insulated fire doors, are not required for fire-resisting insulation. They only meet the requirements of fire-resistance integrity during the specified fire-resisting time. Fire-resistance integrity levels are 1.0h, 1.5h, 2.0h, 3.0h. In the British BS standard, there are non-insulated fire doors.

How much is a fire door?

There are differences in the price of fire doors all over the place, but also the delivery, door closers, installation, etc., there will be some differences in prices. In addition, the fire doors are divided into grades A and B. With the different materials, the price difference is still quite large. In general, Class A and Class B fire doors are priced between 250 and 400 yuan per square meter, while Class C is relatively cheap.

1, steel fire door prices

The price calculation method for steel fire doors is based on the square calculation. Some people also like to use helium. When the number is small, it is more cost-effective. For example, single door price, double door price, etc., it is necessary to know the different sizes. The price is different. According to the market price, steel fire doors are about 450-650 yuan per square or so, and there is not a uniform price. It is necessary to know that there are certain differences in different cities.

2, wooden fire door price

Wooden fire door prices, then it ultimately depends on the style, fire rating and other elements, the most widely used is a wood-colored paint-free style, this use rate of up to 90%. The price of wooden fire doors on the market is generally higher if the material is generally 270-470 per square or so.

3, large fire door prices

Large fire doors are generally provided for companies or factories with special needs. Regardless of the choice of materials, the standards of the process, or the hardware, etc., it can be said that they all have strict acceptance standards. If you look at the price, you can say that the price of this door is more than ten times the price of ordinary doors. The price determines the value, which can be seen from the high safety and fire-resistant capability of the oversized fire doors.

☆ ★ Editor's Reminder: It should be noted that while paying attention to the price of fire doors, we must also pay attention to fire door materials and hardware accessories. Not only fire door materials must be fireproof, but also hardware must be fireproof. In general, formal businesses are required to purchase, but also a qualified inspection report issued by a national testing agency.

Xiao Bian summary: The fire door fire limit and the fire door how much money a square content I introduced to this, hope that the above content can help you. If you still want to learn more about the relevant information, then pay attention to this site information channel now!

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Clawfoot Bathtub

The clawfoot tub or claw-foot tub was considered a luxury item in the late 19th century, originally made from cast iron and lined with porcelain. Modern technology has contributed to a drop in the price of clawfoot tubs, which may now be made of fiberglass, acrylic or other modern materials. Clawfoot bathtubs usually require more water than a standard bathtub, because generally they are larger. While true antique clawfoot tubs are still considered collectible items, new reproduction clawfoot tubs are chosen by remodellers and new home builders and much like the Western-style bathtubs, clawfoot tubs can also include a variety of shower head options.


Clawfoot bathtub come in 4 major styles:

  • Classic roll rim tubs, also called roll top tubs or flat rim tubs as seen in the picture at the top of this page.
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  • Double ended tubs â€“ where both ends of the tub are rounded, as opposed to the classic roll tim tub, which has one rounded end and one fairly flat end.

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