Properties of PVC Thread Pipe for Water
- Healthy, bacteriological neutral, conforming to drinking water standards
- Resistant to high temperatures, good impact strength
- Convenient and reliable installation, low construction expenses
- Excellent heat-insulation property from minimum thermal conductivity
- Lightweight, convenient to transport and handle, good for labor-saving
- Smooth inner walls reduce pressure loss and increase flow speed
- Sound insulation (reduced by 40% compared to galvanized steel pipes
- Light colors and excellent design ensure suitability for both exposed and hidden installation
- Recyclable, environment-friendly, accords with gbm standards
- Extremely long usage life for at least 50 years
(This article comes from made-in-china.com editor released)
At present, the market in the steel type ten minutes, each kind of steel has a different application areas, in the field of mechanical parts and the like, the precision tube is essential steel. The precision tube is a high precision, high brightness seamless steel pipe produced by cold drawing or cold rolling process. Its internal and external diameter can be accurate to within 0.2mm, to ensure that the bending, torsion strength of the same, the lighter weight, it is widely used in the manufacture of precision machinery parts and engineering structure. Today to introduce the use of precision tube.
- Precision tubes for automobile manufacturing, precision tubes for auto parts, precision tubes for precision equipment, precision tubes for boiler equipment.
- Motor shell with precision tube, motor shell, DC motor tube.
- Industrial processing categories: precision machinery for machinery manufacturing, machine tool processing with precision pipe, pipe fittings with precision pipe, processing machinery parts, and so on.
- High pressure tubing, hydraulic cylinder, cylinder.
- Other: electrical gas transmission, water power pipes and so on.
PVC-O pipe appeared in the 20th century, 80 years, its technology since then began to form, creating a global demand. It is estimated that in 2006 North American PVC-O pipe production capacity of 9,000 tons. Over the same period in Europe, PVC-O pipeline production capacity of about 14,000 tons. On a global basis, PVC-O pipe production capacity of about 38,000 tons.
PVC-O pipeline in the market after the introduction of 25 years of functional evolution to promote capacity compared to 2006 rose nearly 10 million tons / year. According to the budget, 2014 North American PVC-O pipeline capacity of 21,000 tons; in Europe, 2014 PVC-O large diameter pipes production in 2006 rose 242.8%, up to 34,000 tons, 17,000 tons produced in Molecor, other 14,000 tons by Molecor Authorized supply.
The evolution of the processing technology increases the pipe diameter. 630mm of the constraints have been broken, because the diameter of 800mm PVC-O pipe is now there will be introduced in the future will be 1000mm diameter of the goods.
PVC-O as a new type of pipe, with good function, low cost, light pipe quality, transfer and laying simple and so on, super function to enable it to apply to higher pressure and more harsh environment. The decline in the cost of goods together to improve its function is that we have been seeking but not simply complete the subject. The biaxially oriented PVC pipe not only provides a model for this subject, but also laid the foundation for the future development of a new commodity.
(Such as hot-rolled steel), purlins and other light beams can also be used cold-formed Z-shaped steel and channel (see cold-formed steel). Steel beam processing is simple, the cost is cheaper, but the steel section size by a certain size restrictions. When the load and span larger, the use of steel section can not meet the strength, stiffness or stability requirements, the use of composite beams.
Made of steel or steel welded or riveting. Due to riveting costs, often based on welding. Commonly used welding composite beam is composed of upper and lower flange plate and web composed of cross-section and box section, the latter is more expensive, and the production process more complex, but has a large bending stiffness and torsional stiffness , Suitable for lateral load and torsion requirements are higher or beam height is limited and so on.
A special type of composite beam, by the rolling I-beam by flame cutting and then dislocation welding, welding beam is higher than the original I-beam (increase the hexagonal hole half), thereby enhancing the beam carrying capacity and bending Stiffness; due to the shape of the hexagonal hole on the web, named honeycomb beam.
Cantilever plate pile: insert the soil part as a fixed end, the upper part of the free end; that is, as a cantilever structure.
Shallow buried single anchor pile: insert the soil part as a fixed hinge, the upper anchor point for the activities of the hinge; that is, as a simple beam structure.
Deeply buried single anchor pile: insert the soil part as a fixed end, the upper part of the anchor point for the activities of the hinge; that is, as a static structure of the beam.
Multi-layer anchor sheet pile: insert the soil part as a fixed end, the upper part of the anchor point of action for the activities of the hinge; that is, as a continuous beam structure.
Universal Beams are available in a wide variety of sizes.
- Engineering Construction
- Residential Construction
- Non-Residential Construction
- Mining Infrastructure
- Transport and Storage
- Available in a wide variety of sizes
- Exceeds the minimum requirements of AS/NZS 3679.1 – 300
- Up to 20% stronger for improved strength to weight ratios
- Requires no special pre-heating for welding
(This article comes from OneSteel Metalcentre editor released)
Clad steel plate is a composite steel plate made by bonding stainless Steel plate, etc. Cladding Material to either or both sides of a carbon steel or low alloy steel plate. Clad Steel Plate is used in variety of industrial fields including shipbuilding, construction and manufacturing of various tanks.
In order to examine separation of a clad steel plate due to working or a change in its shear strength, a test was made by actually shaping a head plate, the working condititions of which are considered the severest of all. After the test, no separation was observed as shown below and absence of deteration in its shear strength was also confirmed.
(This article comes from made-in-china.com edit released)
Sheet pile support According to the presence or absence of an anvil structure, there are two types of anchor plate and an anchor plate pile.
No anchor plate pile is cantilevered plate makeup. This pile is very sensitive to the nature of the soil, the size of the load is very sensitive, because it only rely on the soil part of the soil to maintain the stability of the board makeup. So its height is generally not greater than 4m, otherwise it is not economical, it is only applicable to the shallow foundation pit soil support.
Anchorage sheet pile is fixed in the upper part of the plate with a pull anchor device to improve the support of the board makeup. Single anchor sheet pile is commonly used as an anchor form of anchor plate pile. It is composed of sheet pile, beam, tie rod, anchor pile and nut, etc., steel sheet pile through the beam (steel), steel rod, nut fixed on the anchor pile.
Steel sheet pile bearing foundation, the development of corner joints opened a new era of load-bearing piles through the “connector will be the same number of steel sheet pile connected to form a closed section, and then its into the ground in turn.Using professional piling equipment can be avoided Piling the process of noise and vibration, which can be sensitive areas and urban areas such as the impact of the impact of piling the construction area.
In addition to reducing the impact on the environment, load-bearing basis can also be carried out during the piling process load test construction can be immediately load-bearing. In addition, the load-bearing foundation can also be removed after the completion of the re-use.
What is the difference between H-beam and I-beam?
H-beam is a highly efficient economic cutting profile (there are other cold-formed thin-walled steel, steel plate, etc.), due to reasonable cross-sectional shape, they can make steel to achieve higher performance and improve carrying capacity. Unlike the ordinary I-beam, the h-shaped steel flange is widened, and the inner and outer surfaces are usually parallel, which facilitates connection with high strength bolts and other components. Its size constitutes a series of reasonable, complete model, easy to design selection.
I-beam, whether normal or light, because the cross-sectional size are relatively high, narrow, so the cross-section of the two main sleeve of the moment of inertia difference between the larger. Therefore, it is generally only used directly for members that are bent in the plane of their webs or to form a lattice-type force member. It is not advisable for the axial compression members or the components that are curved in the plane perpendicular to the web, which makes it very limited in scope of application.
H-beam flange are equal thickness, there are rolling cross-section, there are three plates welded by the composition of the cross-section. I-beam are rolling cross-section, due to poor production process, the edge of the edge of a 1:10 slope. H-beam rolling is different from the ordinary I-beam only with a set of horizontal roll, because of its wide flange and no slope (or slope is very small), it is necessary to add a set of vertical. Therefore, its rolling process and equipment are more complex than ordinary rolling mill. Domestic can produce the largest rolling h-beam height of 800mm, more than only the combination of welding cross-section. China’s hot-rolled H-beam GB (GB / T11263-1998) H-section is divided into narrow flange, wide flange and steel pile three, the code were hz, hk and hu. Narrow flange H-beam for beam or bending members, and wide flange h-shaped steel and h-shaped steel piles, for axial compression components or bending members. I-beam compared with H-beam, and other weight under the premise of w, ix, iy are not as h-shaped steel.