Fire pipes, as the name suggests, is a piping system for fire protection. Due to the special requirements, the thickness and material of fire pipes have special requirements, and they are sprayed with red paint to transport fire water. A fire pipe is a pipe material used for fire fighting, fire fighting equipment, equipment, fire fighting water, gas or other medium. As the fire pipe is often in the static state, and therefore more stringent requirements of the pipeline, the pipeline needs pressure, corrosion resistance, high temperature performance. What are the standards for fire pipe installation? How much is the installation price of fire pipe? Let’s have a look together.
The role of fire pipes
A fire pipe is a fire hydrant for carrying fire water, bringing water from a fire tank or pool to a building, and drawing water from a fire tank or pool into an automatic sprinkler pipe in a building. In the nozzle of the automatic spray system, there is a glass ball on the water jet. It bursts at high temperature. The water in the pipe is under pressure and is ejected from the nozzle.
Fire pipes, as the name suggests, is a piping system for fire protection. Due to the special requirements, the thickness and material of fire pipes have special requirements, and they are sprayed with red paint to transport fire water. A fire pipe is a pipe material used for fire fighting, fire fighting equipment, equipment, fire fighting water, gas or other medium.
As the fire pipe is often in the static state, and therefore more stringent requirements of the pipeline, the pipeline needs pressure, corrosion resistance, high temperature performance.
Fire pipe installation standard
1. throttling device: in the high level fire fighting system, the spray head and hydrant flow in the lower layer are too large, and the pressure reducing orifice or throttling pipe can be used to balance the equipment. Decompression orifice plate is arranged in the horizontal pipe diameter not less than 50mm, orifice diameter should not be less than 50% of the diameter of pipe installation, orifice plate installed in the pipe flow at the corner of the downstream side, should not be less than two times the distance and bend pipe diameter setting. When adopting throttling pipe, its length should not be less than 1m.
2. parts: alarm valve installation should be carried out in before the date, the delay device is installed in a closed sprinkler system, is to prevent false alarm facilities. It can be installed according to the instructions and assembly drawings. It should be installed on the signal pipe between the alarm valve and the hydraulic alarm. The hydraulic alarm is installed near the alarm valve. The galvanized steel pipe shall be used for the connection with the alarm valve.
3. fire hydrant installation accessories: should be carried out before the date. Fire hose should be folded tightly on the box and rolled on the rack or fire gun to stand on the inside of the box, self-help gun and hose should be placed on the hanging card or put them in the box at the bottom. Fire hose and gun, fast joints, usually 14# wire banding two, each of not less than two times, using a clamp, a wire in the side. Electrical control button should be paid attention to and electrical professional construction.
Classification of fire pipelines
copper pipe又称紫copper pipe。有色金属管的一种，是压制的和拉制的无缝管。copper pipe具备坚固、耐腐蚀的特性，而成为现代承包商在所有住宅商品房的自来水管道、供热、制冷管道安装的首选。
Alloy tube（Alloy pipe）是无缝钢管的一种，其性能要比一般的无缝钢管高很多，因为这种钢管里面含Cr比较多，其耐高温、耐低温、耐腐蚀的性能是其他无缝钢管比不上的，所以Alloy tube在石油、航天、化工、电力、锅炉、军工等行业的用途比较广泛。
Composite pipe（Composite pipe）是由两种或多种材料组合而成的管材，是以金属管材为基础 , 内、外焊接聚乙烯、交联聚乙烯等非金属材料成型，具有金属管材和非金属管材的优点。
Precautions for fire pipe installation
Before installing, make sure that the proper installation area is installed and the installation is ready. For the installation range, fire pipes are generally suitable for civil and general industrial building indoor fire sprinkler systems and fire hydrant systems piping and equipment installation works.
For construction preparation, the most important thing is to choose the appropriate construction materials. First of all, for fire spray pipe, according to the design requirements of choice, generally choose galvanized carbon steel pipe and pipe fittings. The reasons include that this kind of pipe has the advantages of uniform galvanizing inside and outside, no corrosion, no flying thorn, and so on, it can greatly prolong the service life of the device. Secondly, the appropriate fire hydrant system pipe should be chosen. For fire hydrant, general carbon steel pipe or seamless steel pipe, the best is not bending, rust, double skin and uneven phenomenon, of course, the user can choose according to their own situation, but must meet the design requirements. Third, is the alarm valve, valve, control valve, retarder, water flow indicator, pump combiners and other major components of choice, to maintain complete accessories, casting parts design rules, and comply with the relevant standards. Fourth, select the appropriate spray head, the specifications, types, operating temperature should meet the design requirements, and ensure the appearance rules, complete thread. Fifth, fire hydrant box selection can not be ignored, to keep the box founder, box accessories complete, but also with closed flexible, closed tight, sealed packing intact, products have factory certification and other characteristics.
Fire pipe installation price
The installation price of fire pipes is calculated in two ways: one by meter and one by square.
Galvanized steel pipe, DN150, 1, 600
Galvanized steel pipe, DN100, 1, 465
Galvanized steel pipe, DN80, 1, 355
Galvanized steel pipe, DN65, 1, 315
Galvanized steel pipe, DN32, 1, 180
Galvanized steel pipe, DN25, 1, 125
Galvanized steel pipe hanging column and bearing bracket DN150, 1, 45
Galvanized steel pipe hanging column and bearing bracket DN100, 1, 40
Galvanized steel pipe hanging column and bearing bracket DN80, 1, 40
Galvanized steel pipe hanging column and bearing bracket DN65, 1, 35
Galvanized steel pipe hanging column and bearing bracket DN50, 1, 33
Galvanized steel pipe hanging column and bearing bracket DN40, 1, 33
Galvanized steel pipe hanging column and bearing bracket DN32, 1, 30
Note: the above prices are for reference only.
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