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1. When the diameter dn of the steel mesh skeleton plastic composite pipe is ≤ 500mm, the clear width of each side of the pipe should not be less than 0.3m; When the pipe diameter dn ≥ 500mm, the clear width of each side of the pipe should not be less than 0.5m. 2. The trench slope can be determined according to the construction site environment, trench depth and groundwater level
Published on: June 16, 2023 Clicks: 39
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1. Before water filling, exhaust valves shall be set at the upstream pipe top of the test pipe section of the steel mesh skeleton plastic composite pipe and the convex point in the pipe section. After the pipeline end is blocked, water shall be slowly poured from the downstream. 2. When the pipeline is pressurized, the gas in the pipeline shall be discharged. When the needle of the spring pressure gauge is found to swing, unstable and slow in pressure rise during pressure rise
Published on: June 13, 2023 Clicks: 179
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1. HDPE HDPE pipe is light and easy to install. 2. It is easy to form a closed anti-seepage system through butt welding and electric fusion welding. When laying along the trench, the amount of earthwork excavated in the trench and the amount of accessories can be reduced. 3. Chemical corrosion resistance, internal, external and microbial corrosion resistance
Published on: June 7, 2023 Clicks: 43
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1. There are 220V and 380V power supplies for the welding machine connected to the power supply, which should be checked clearly. The specification of cable lead shall match the power of the welding machine, and the voltage value on the terminal block shall be within ± 10% of the standard value. 2. Test welding machine shall be debugged on site before use to check whether it can work normally. 3. Connecting pipe fittings will be welded
Published on: June 7, 2023 Number of hits: 8
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Steel belt reinforced polyethylene (HDPE) spiral corrugated pipe for underground drainage is a closed wall pipe of HDPE and steel belt fusion composite structure. The pipe wall structure is composed of three layers: the inner layer is composed of a connecting solid wall inner layer pipe, the inner layer pipe is wrapped with a composite useful steel belt and folded into an inverted "u" shaped circular corrugated steel belt reinforcement, and the coated corrugated steel belt reinforcement is compounded with the steel belt reinforcement body wave
Published on: May 23, 2023 Clicks: 7
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The well seat of the plastic inspection well is mostly made of one-time injection molding, with reducing joint, angle change joint, rubber seal ring and other accessories to reach the connection of the changed pipe diameter and view point. The manhole cover, shaft and relevant accessories are developed. The road load acts around the manhole through the manhole cover and shaft seat, avoiding the damage of road load to the manhole. The well seat can float up and down
Published on: May 23, 2023 Clicks: 11
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Generally, the steel wire mesh skeleton composite pipe is very regular after production. In many cases, in order to save space, pipes with large apertures will be placed on the bottom layer and stacked layer by layer. If the height is not more than 2.5 meters at this time, the pipes will not be damaged or flattened. But if a small diameter pipe is sleeved inside a large diameter pipe
Published on: April 28, 2023 Clicks: 36
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1. When it is exposed indoors or outdoors and may freeze, insulation measures shall be taken for the steel mesh skeleton composite pipe. 2. Thermal insulation shall be provided for hot water pipes that are exposed or not directly buried in the pipeline room. At the same time, the delivery water temperature of the composite pipe shall not be higher than 60 ℃. When the pipeline may be dewed and
Published on: April 28, 2023 Clicks: 19
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With the need of modernization hypothesis, the demand for pipe materials in social construction is increasing. There are many kinds of building materials on the market, such as petroleum transportation pipes, machinery industry pipes, etc. Almost all aspects of life, such as household drainage, heating pipes and rainwater pipes, are involved. While the pipes are in wide demand, they are also constantly improving, from the original metal type to cement type
Published on: April 28, 2023 Number of hits: 10
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1、 PVC pipe PVC pipe is rigid PVC pipe. The pipe wall structure includes double wall corrugated pipe, reinforced pipe and flat wall pipe. When PVC pipes are used as drainage pipes by municipal pipe manufacturers, the concentration of hydrogen sulfide gas in the pipes is much higher than that in concrete drainage pipes
Published on: April 28, 2023 Number of hits: 20
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1、 In terms of structure, the steel wire mesh skeleton composite pipe structure is a five layer structure, consisting of steel pipe layer, hot melt adhesive layer, internal and external plastic pipe layer. Because the internal and external materials are PE, its anti-corrosion ability is very strong, which can resist the corrosion of acid, alkali and salt, and has strong corrosion resistance for coastal air corrosion
Published on: April 6, 2023 Clicks: 21
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Installation method of PVC pipes: 1. When PVC pipes are connected with steel pipes, the joints of steel pipes should be rubbed with glue first, and the PVC pipes will become soft without burning after being heated, and then socket on the steel pipes for cooling treatment. 2. Bonding
Published on: April 6, 2023 Clicks: 13
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The service life of bellows is the shortest working period or cycle times to ensure normal operation when used under working conditions. The elastic sealing system composed of bellows often works under the conditions of variable load and large displacement with more cycles, so it is of great significance to determine the service life of bellows. Due to the different functions of bellows, the requirements for their service life are also
Published on: April 6, 2023 Clicks: 12
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1. The steel mesh skeleton composite pipe shall not be buried in the reinforced concrete structure layer. Holes or embedded sleeves shall be reserved when the pipeline passes through the floor, roof and the wall (bottom) of water tank (pool). 2. In the hot water supply pipeline system, steel pipe fittings shall be selected. When rubber sealing is selected, heat resistant rubber sealing cabinet shall be selected. For cold water pipe
Published on: March 23, 2023 Clicks: 14
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During the construction process, the steel mesh skeleton plastic composite pipe may be damaged due to improper handling or stones on the construction site. Therefore, special attention will be paid during construction. But in fact, in the process of transportation and storage, if the method is improper, it will also cause damage, so we should master the method. 1. During transportation, loading and unloading, handling and stacking
Published on: March 23, 2023 Number of hits: 11
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(1) The UHMWPE composite pipe shall be backfilled in a timely manner after laying, and the pipeline connection part shall be reserved during backfilling. The connection part shall be backfilled after the UHMWPE pipe passes the hydrostatic test, and the pipeline system shall be reinforced before backfilling. (2) When backfilling, the pipe bottom shall be filled first, and then
Published on: March 23, 2023 Number of hits: 11
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1. Phenomenon: the backfill soil sinks as a whole or causes uneven settlement 2. Cause analysis of municipal pipeline: the backfill soil with water or the backfill soil quality does not meet the requirements; No layered backfilling; The compactness of backfill is not strictly controlled, and the pipeline deformation is large. 3. Hazard: causing pipe
Published on: March 23, 2023 Clicks: 14
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1. Lower the pipe. According to the center line of the survey and setting out, the side line of the municipal pipeline in Guizhou is well controlled with string. The 8t tire crane is used to lower the pipe, and the crane runs along the trench to 1m away from the edge of the trench to avoid collapse of the trench wall and affect the stability of the trench slope. Special hooks or flexible slings shall be used when lowering pipes, and steel wire ropes shall not be used to penetrate into pipes for lifting. At the same time, there is a specially assigned person to command
Published on: March 23, 2023 Number of hits: 11
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Before the steel mesh skeleton composite pipe is put into formal use, in order to ensure the use quality, it needs to carry out pressure test to check whether the welding quality of the product is qualified. If the test result is inaccurate, it will affect the construction progress, then what should be paid attention to during the test? Pressure test includes strength test and water tightness test
Published on: March 20, 2023 Number of hits: 8
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In addition to the main materials, plastic particles and steel wires, some other materials will be added to the production of steel mesh skeleton composite pipes to ensure better performance. What are the specific materials? 1. The outside of the composite pipe of the color master wire mesh framework is black, which is the credit of the color master. In fact, plastic particles are colorless and tasteless milky white particles
Published on: March 20, 2023 Number of hits: 7
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