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Temporary fire pipes are made of pc material

1. The reason why PC material is used for temporary fire pipes: PC material is resistant to impact, high pressure and heat, and has strong cold creep resistance and hardness and is not easy to deform. It is suitable for firefighters working in high temperature environments. PC pipe is a polycarbonate plastic pipe used in fire-fighting wires and pipes. Because of its flame-retardant effect, PC pipe can also prevent the spread of fire during fire-fighting work.

2. Regulations and standards are inconsistent. According to the mandatory provisions of the "Technical Specifications for Fire Safety at Construction Sites of Construction Projects"(GB 50720-2011), the pipes of temporary fire water supply systems must be steel pipes. The practice of adding flame-retardant cotton to plastic pipes does not meet the national fire safety technical standards and cannot pass the project acceptance.

3. There are no clear requirements for the material of temporary fire pipes. It is not feasible to use PVC pipes and the pipes are easy to burst. PPR pipes can be used if cost is considered for temporary fire pipes. PE pipes can be used if the diameter is large. It is best to use galvanized steel pipes. The fire pipes are made of steel.

4. When connecting the fire hydrant water supply system and automatic sprinkler system pipes, threaded flanges are recommended, and secondary galvanizing should be carried out when welding flanges are used. When the diameter of any pipe section needs to be changed, standard reducing joints and fittings should be used.

Electrical fire line pipes are buried in the floor. Can flame retardant PVC pipes be used? General floor 100, buried on the ground floor...

1. Metal pipes are generally commonly used, but PVC pipes can be used when not required.

2. For pipes that are secretly applied in walls and buried in underground non-combustible bodies, as well as pipes for home decoration in rural buildings and other ordinary houses, PVC passing pipes that meet the Ministry of Construction Standard JG3050 -1998 "Insulating Electrical Casing and Accessories for Buildings" must be used with certain flame retardant properties and meet the requirements of physical and mechanical properties. Carry out according to the details and place.

3. According to the specifications, flame-retardant pvc wire pipes can be used, and the thickness of the protective layer is not less than 30 mm. It mainly depends on the design requirements and needs to meet the design requirements.

4. Don't use pvc pipes if you don't want to find trouble, because the strength of this pipe cannot be reached in all aspects and cannot function as a grounding force, which will have an impact on the stability of the system.

Can PC pipes be used for the pre-embedded line pipes of the fire hydrant pump lift button wires and emergency lighting wires? Are there any regulatory requirements...

It is best not to use it. There is a saying in the specification that the transmission line of the automatic fire alarm system should be protected by metal pipes, hard plastic pipes with flame retardant treatment or closed wire troughs. Depending on the specific situation, the pump lift button you say is the section from the junction box to the fire hydrant box? You can use a special snakeskin tube (inner metal and outer plastic), but not too long. It's okay in the box. Emergency lighting is not mentioned. If it is not necessary, it is recommended to use KBG tube, and the cost is not high.

The reasons why PC material is used for temporary fire pipes: PC material is resistant to impact, high pressure and heat, and has strong cold creep resistance, hardness and difficulty in deformation. It is suitable for firefighters working in high temperature environments. PC pipe is a polycarbonate plastic pipe used in fire-fighting wires and pipes. Because of its flame-retardant effect, PC pipe can also prevent the spread of fire during fire-fighting work.

Steel pipes coated with other anti-corrosion materials or stainless steel pipes that comply with the specifications.

Depending on the specific situation, the pump lift button you say is the section from the junction box to the fire hydrant box? You can use a special snakeskin tube (inner metal and outer plastic), but not too long. It's okay in the box. Emergency lighting is not mentioned. If it is not necessary, it is recommended to use KBG tube, and the cost is not high. Buried depth can meet the requirements of the specification. There are two ways to lay fire cables: embedded and steel pipe plus fire retardant coating.

What are the fire protection requirements for the size of the exhaust duct of the catering kitchen?

The basic size requires the common kitchen flue size such as 300*300 mm. This is a relatively standard size that can meet the smoke exhaust needs of most catering kitchens. Relationship between flue discharge method and size Pre-embedded PCV pipe: Pre-embedded PCV pipe with a diameter of 160 mm in the ceiling and placed above the design position of the flue machine. The size requirements of this method are relatively clear, and it is necessary to ensure that the diameter of the PCV pipe matches the smoke exhaust outlet of the hood.

The kitchen flue is designed with the exhaust air volume of a single range hood of 300 - 500m/h, and the bathroom is designed with 200 - 300m/h, and the minimum side length of the cross-section is not less than 100 mm. During construction, support must be carried layer by layer, C20 fine stone concrete must be caulked and sealed, and the roof section must be tilted outward by 5° to prevent backflow. The size of the hood increases with the number of floors. For example, it is 300×300mm for floors 1 - 6, and it reaches 540×540mm for floors 41 - 50 to ensure effective ventilation, rain and wind protection.

It is also necessary to use a degreasing valve to remove the oil film formed on the surface of the discharged air to ensure good and smooth operation of external exhaust air and not pollute the internal space environment of other floors. Generally, the cross-sectional area of common large commercial flues is large to achieve the best smoke exhaust effect without forming an obstruction effect and comply with the requirements of national standards and industry standard design basis for construction, design, installation and use. Factors to be considered in the flue size design include the size of the kitchen area, the number of stoves and the maximum smoke exhaust volume.

There is no fixed standard for the length of fire exhaust passage pipes and needs to be comprehensively determined based on the actual building layout, smoke exhaust requirements and installation specifications. However, the length of the pipes should be shortened as much as possible during installation to improve smoke exhaust efficiency. The size of the smoke exhaust pipe is not directly related to the length: the size of the smoke exhaust pipe mentioned in the reference information (such as 110mm, 150mm, and more than 6cm of the kitchen smoke exhaust pipe) is the diameter or width of the pipe, which belongs to the category of net size and has no direct relationship with the length of the pipe.

What are the material requirements for fire pre-embedded line pipes?

The fire protection pre-embedded line pipe specification requires the use of materials that are fire resistant, high temperature resistant, corrosion-resistant and not prone to aging. Specifically, the materials of fire pre-embedded line pipes mainly include the following: Metal pipes: The commonly used metal pipes are galvanized steel pipes. Galvanized steel pipes are widely used in fire-fighting pre-embedded pipes because of their fire resistance and durability, excellent corrosion resistance, outstanding mechanical strength and stable fire resistance.

- Commonly used materials: Galvanized steel pipes are widely used in fire-fighting pre-embedded pipes because of their fire resistance and durability, excellent anti-corrosion properties, outstanding mechanical strength and stable fire resistance properties. Plastic pipes: -Advantages: low cost, light weight, and easy installation.

Pre-buried pipes are reserved in the structure for pipes (commonly steel cast iron pipes or PVC pipes) to pass through pipes or leave holes to serve equipment. For example, in the later period, various pipelines will be used (such as strong and weak electricity, water supply, gas, etc.). Commonly used for reserving pipe holes on concrete wall beams. In building structures, there are generally very few pipelines that go through openly.

The threading of fire lines and pipes must strictly comply with the requirements of the national Code for the Design of Automatic Fire Alarm Systems (GB50116) and the Code for the Acceptance of Construction Quality of Building Electrical Engineering (GB50303). Before threading, it must be confirmed that the material of the wire pipe meets the fire resistance rating, the wall thickness of the metal pipe is not less than 5mm, and the flame retardant PVC pipe should be of Class B1 refractory material, and fire-retardant paint should be applied when exposed.

The selection of pipeline materials is preferred for the main line of the fire alarm system to use metal pipes or flame-retardant hard plastic pipes. Metal pipes should be buried in the noncombustible structure when applying in secret, and fire-retardant paint should be applied to protect them when applying in open; metal pipes must be used in areas where there is a risk of mechanical damage, and plastic pipes must not be used instead. Wiring isolation requires that lines with different voltage levels (such as 24V alarm bus and 110V fire telephone line) must be laid separately.

Can pvc pipes be used for fire protection pre-burial? The drawings say to use metal pipes [or] flame retardant insulating plastic pipes, mainly...

The code requires that it is necessary. You may not have seen how the pvc in the wall was burned by the temperature after the fire broke out. 2. Fire-fighting weak current systems are susceptible to interference, iron pipes are shielding, and it is difficult to successfully debug PVC for engineering at multiple points.

Fire-fighting electricity can be pre-buried with metal pipes, plastic pipes or new pipes. Metal pipe: -Advantages: It has high strength and durability, can withstand greater pressure and impact, and has good electrical and thermal conductivity, which helps to ensure the safe operation of the line. - Disadvantages: The price is relatively high, the installation cost is also high, and it is easy to rust and corrode in a humid environment, requiring regular maintenance and maintenance.

When using a clear design, metal pipes or metal wire trunking should be coated with fire-retardant coating for protection. 3 When cables with insulation and sheath of non-combustible materials are used, they may not be protected by metal pipes, but they should be laid in the cable well. Design Code for Automatic Fire Alarm Systems (GBJ116 -98) 1 The transmission line of the automatic fire alarm system shall be wired through metal pipes, flame retardant treated rigid plastic pipes or closed wire trunking protection methods.

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