Glass steel pipes

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Glass steel pipes

To illustrate, a glass steel buried pipeline foam construction

1, direct buried insulation pipe can be widely used in heating, geothermal, refrigeration, municipal construction, oil and other industrial sectors, adding flame retardant protective layer can also be used for overhead pipeline.

2, the depth of burying must ensure that load ten tons truck safety through, as far as possible, reduce heat loss, shall be laid in the ice below the line, different regions should be based on different conditions of the region specific treatment.

3, pipe trench excavation size should guarantee between the tubes, 200-250 mm interval left between the pipe and the trench wall, in order to on-site installation and joint treatment, gully bottom brick soil compaction, when necessary, available sand bedding.

4, direct buried pipe on the road, the laying depth, just not backfill soil covering is made into the trench forms in the pipe bedding, reinforced concrete plate groove or concrete casing treatment.

5, between the pipe and pipe, using welding (glass pipe connection technology and pressure test standards set separately) pipe after installation, pressure test (9 /cm L) 10 minutes buck 0.5 kg /cm - qualified, should maintain the ditch bottom water and installation of pipe welding joint, made after fully cured (48 hours) will be put into the ditch bottom pipeline, so as not to not make joint processing into the ditch, water soaking pipe joint part and reducing waterproof, anti-corrosion, insulation effect.

6, in the process of installation of the insulation pipe, can be installed on one side, the side to do joint processing, can also be installed all pressure test again after the joint processing.

(1) in order to ensure the joint waterproof, anti-corrosion, insulation effect, to ensure that joint site condition is very necessary.

(2) joint field temperature, in the operation should be kept above 10 degrees, the minimum should not lower than 5 DEG C, the winter is not suitable to do joint processing, rainy days, not suitable for joint treatment, gully bottom wet, water does not do joint processing.

Two, direct buried insulation pipe overview:

Direct buried insulation pipe is mainly composed of four parts.

1: according to the requirement of working steel pipe conveying medium technology respectively adopts a welding steel submerged arc spiral seam steel pipe, seamless steel pipe, double-sided.

The 2 insulation layer: use of rigid polyurethane foam.

3: protective shell is made of high density polyethylene or glass steel.

4 leakage alarm line: manufacturing of directly buried heat insulation pipe, in the insulation layer near the pipe, buried with the warning line, once the pipeline leakage alarm line somewhere, by conduction, can be in a dedicated instrumentation alarm and display the location and the degree of leakage Water Leakage big small, to inform the pipe repair personnel quickly processing Water Leakage, guarantee the safe operation of heat supply network.

Three, direct buried insulation pipe performance:

Direct buried insulation pipe has good mechanical performance and heat insulation performance, usually resistant to the high temperature of 120 DEG C through modification or other insulating material resistant to high temperature of 180 DEG C combination, insulation engineering applicable to all kinds of cold, hot water high temperature pipeline.

Four, the advantages of directly buried heat insulation pipe:

1, reduce project cost.

According to estimates by a relevant department, two pipe heating pipe, under normal circumstances can reduce the project cost 25% (made of glass steel as a protective layer) and 10% (using high density polyethylene as a protective layer around).

2 low heat loss, energy saving.

Direct buried insulation pipe of the thermal conductivity coefficient: lambda =0.013 - 0.03kcal/m - H - oC, other than in the past used pipe insulation material is much lower, the insulation effect is increased by 4~9 times. Again the water absorption rate is very low, about 0.2kg/m2. The reason of low water absorption is due to closed cell polyurethane foam rate around 92%. Low thermal conductivity and low water absorption rate, coupled with the thermal insulation layer and the outside good waterproof properties of high density polyethylene or glass steel shell, has changed the traditional trench laying heating pipeline "wear wet jacket" situation, greatly reducing the overall heat loss of heat supply pipeline, network heat loss is 2%, less than 10% of the requirements of international standard.

3, anti-corrosion, insulation performance is good, the service life is long.

Direct buried insulation pipe because of rigid polyurethane foam insulation layer bonded in the steel sheath, cut off the air and water infiltration, can play a good role in anti-corrosion. At the same time, foaming holes it is closed, water absorption is very small. High density polyethylene shell, glass steel shell has good anti-corrosion, insulation and mechanical properties. Therefore, the work pipe sheath hard to erosion of the outside air and water. As long as the internal pipeline water treatment, according to foreign information, directly buried insulating pipe service life can reach more than 50 years, the use of 3~4 times higher than the traditional life and trench laying overhead laying.

4 an area of small, fast construction, is beneficial to environmental protection and reduce the construction people.

Don't need laying large trench buried heating pipe, only the people buried underground heat insulation pipe, thereby greatly reducing the area, reducing the volume of earth excavation about 50% above, to reduce the amount of 90% civil masonry and concrete. At the same time, heat preservation tube processing and on-site trench parallel, simply field joints, can greatly shorten the construction period. Due to the reduction of the brick, cement, sand and gravel, the remnant soil of transportation, thereby reducing the exhaust emission in the process of construction quantity, dust emission, noise emissions, so as to protect the environment.

5, security

At present, in addition to direct buried insulation pipe production outside of China, are equipped with leakage alarm line, once the pipeline leakage alarm line somewhere, by conduction, can show the insulation pipe seepage, leakage and leakage extent accurate position in the special detecting instruments, the pipe section to inform the inspection personnel quickly processing infiltration leakage. To ensure the safe operation of heat supply network. Domestic production of thermal insulation pipe leakage current alarm line end design, need to fill this blank.

Five, direct buried insulation pipe summary:

The total


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Waterproof, fireproof, anti-theft performance: broken bridge aluminum doors and windows with a rainwater structure designed to completely separate the rain from the outdoor, watertight in line with national standards; its aluminum alloy material for the metal material, Can be a good solution to the family fire hazard; for anti-theft performance is good, because the broken bridge aluminum composite window prepared a good hardware accessories and senior decorative locks, thieves face it can only helpless.
Q:Plastic doors and windows and plastic windows do not like?
According to the material plastic doors and windows can be divided into PVC plastic doors and windows and glass fiber reinforced plastic (FRP) doors and windows. The following are the same as the " 1, PVC plastic doors and windows 1) In all kinds of building windows, PVC plastic windows in saving energy production profiles, recycling of recycled materials and the use of energy consumption has a prominent advantage in the insulation and energy saving has excellent performance and low cost. The following are the same as the " 2) In order to increase the rigidity of the window, in the window frame, sash, the tread profile of the force bar, should be based on the strength of the wind pressure design and other requirements to determine what kind of reinforced steel. The following are the same as the " 3) Coextrusion of UPVC resin with colored polymethyl methacrylate (PMMA) or acrylonitrile-styrene-acrylate copolymer (ASA), as well as coating on white profiles, can be coated with a variety of textures and A variety of surface color decorative effect. In addition, UPVC resin powder is also added to the pigment mixture extrusion of the body dyeing technology. But there are still different views on this technology, it should be particularly careful in the selection, to check the kind of profiles by artificial accelerated aging test after the color changes. It is recommended to coat the color film with the color film to improve its weatherability.
Q:China 's top ten brands of steel profiles in 2014
In the financial financial steel doors and windows is a national key high-tech enterprises, is the industry's well-known brands, the national one of the top ten brands of steel doors and windows, it has Zhejiang Zhongcai profile company production. A large multinational company headquartered in Germany. It is the international profile of the North New North new steel doors and windows is China's largest new building materials group. The company has created more than 30 years of history, it is also well-known trademarks in China. The market occupies a certain proportion.
Q:What is the steel profile?
Simply put the profile is installed into a window that can still be seen after the outer surface. Such as the large and small faces of the box. While the middle glass trough installed glass and pressed after the invisible, that is non-visible surface.
Q:Plastic doors and windows profiles
The overall quality of plastic doors and windows by the quality of hardware accessories and installation of a great impact, because the domestic enterprises PVC plastic doors and windows profile profile shape and size are not the same, hardware accessories can not be unified, so the production of each variety of parts Can not be large, it is difficult to form a scale effect, in addition, due to the overall level of consumption of domestic doors and windows is still very low, limiting the price of PVC plastic doors and windows, PVC plastic doors and windows hardware accessories prices are too low, causing manufacturers to meet the market had to reduce Cost and make cheaper cheap hardware accessories. Fortunately, the new standards for plastic window hardware is being developed, hoping to standardize the hardware market. Excellent hardware accessories, can improve the overall performance of the window, such as flat window using multi-point locking than a single point of locking the sealing and wind pressure performance is much higher, the use of corner hinge or adjustable hinge its performance It is much stronger than ordinary type or saddle type hinge, it can effectively prevent fan sagging phenomenon. In addition, the use of silicified and the middle of the taps with the top of the top coat is much higher than the ordinary.
Q:The development of steel profiles
From white to color: color profiles change the steel doors and windows in the past monotonous white, with the building as a whole with the perfect color. Color profiles market share rose rapidly, especially in some high-end residential area widely used.
Q:It is good for aluminum alloy
It is also good for aluminum alloy. The strength of the aluminum alloy is three times the strength of plastic, wind pressure strength than plastic two high. Aluminum alloy frame cross-sectional area of only steel 1/3, window frame weight is much lighter. Plastic doors and windows due to the strength of the material and low steel, although the steel lining by adding enhanced, but its wind pressure and watertight performance than the aluminum alloy window two levels. Just because the plastic window steel lining is not in its profile lap angle to connect the complete frame system, window frame, fan four corners and the T-shaped plastic angle of penetration is relatively low, so the high-rise buildings should be used with caution.
Q:What is the difference between plastic doors and windows and steel doors and windows?
According to the characteristics of profiles, the profiles are roughly divided into European and American two. European doors and windows of its characteristics are: profile formulations still use the traditional lead salt heat stabilizer, a small number of countries and enterprises began to use environmentally friendly organic tin heat stabilizer; main section of the profile profile is generally designed for three or four main chamber, The total number of chambers to 6 to 8, wall thickness is generally 2.5 ~ 3.0mm. Doors and windows with fan-fan frame structure, fan section larger, with pulley, can be removed; built-in glass, dry mosaic; window open in the foreign under the hanging window-based, a small amount of sliding window. American doors and windows: the main formula for the use of environmentally friendly organic tin heat stabilizer, to avoid the production, processing, use of lead salt toxicity of the drawbacks; development for the multi-cavity section, the second is to reduce the profile wall thickness, 1.80mm; while increasing the number of internal reinforced steel and the chamber, the chamber generally have 9 to 13. In addition to reducing the strength of profiles, but also improve the thermal insulation and sound insulation effect. The sliding window for the frame package fan, improved the sealing and safety performance, cancel the fan pulley, reduce the fan section at the same time, the window lighting performance has been improved. Developed a standard installation method for pulling windows and new mounting wings.
Q:What is the amount of plastic profiles
Plastic window frame and sash with lap way to seal, fan and the box part of the overlap called the amount of overlap. The industry standard does not specify the amount of lap. For the flat window, lap is generally between 8 ~ 10mm. If the conditions permit, the amount of lap as much as possible to choose a larger, so that in the installation and use, even if the frame fan overlap position slightly dislocation, but also to ensure that the seal between the frame fan. Using different hardware, but also affect the amount of overlap factors. If the use of ordinary handle, frame fan lap can choose a larger, if the use of transmission handle, frame between the need for a certain gap between the installation of the drive, so the amount of lap would have to be smaller, otherwise, installed on the fan Of the transmission is easy to touch the window frame, affecting the sash switch. Therefore, even with the same profile, the lap should also be determined separately.
Q:How many meters of a conch plastic steel profile
Normal are 6 meters, one about 7-8 kg. Outside sets of plastic bags

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