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How to choose a concrete pump

A concrete pump has the following main technical parameters: delivery displacement, outlet pressure, motor power and distribution valve form. According to the new national standards, these main parameters are known from the model of the concrete pump. The motor power of a concrete pump is the precondition for determining the outlet pressure and the delivery volume. When the motor power is constant, the increased pressure will reduce the delivery volume; on the contrary, reducing the outlet pressure will increase the delivery volume. In order to ensure that the concrete pump has a large conveying capacity, and can have a certain outlet pressure with the matching economic power, in the design of the concrete pump, most of the constant power piston pump is used; that is, the constant power value After the selection, when the outlet pressure rises, the output displacement of the oil pump will automatically decrease, reaching the value corresponding to the power design; if it is necessary to

2018-08-09

About Transportation and filling of Concrete

Concrete can be transported to the construction site by belt conveyors or mixer trucks. About the shipping requirements, which are as bellow: 1. During the transportation process, the homogeneity of the concrete should be maintained to avoid delamination and segregation; 2. Which should make sure the shortest minimum rotary speed of operations and running time; 3. It should ensure that the pouring work of concrete is carried out continuously; 4. The container for transporting concrete should be tight and not leaking. The inside of the container should be smooth and non-absorbent. The filling method can be done manually or by means of machinery. Concrete pumping and filling concrete mixes are highly efficient and can reach hundreds of cubic meters per hour. Whether it is a concrete cast-in-place project or a prefabricated component, the compactness of the concrete after the filling must be ensured. The method mainly uses vibration tamping, and some use centrifugal, extrusion and vacuum o

2018-08-09

The problems and solutions of Roller suspension concrete pipe making machine

Suspension roller process (1) steel skeleton displacement deformation In the process of the suspension roller process, due to the use of dry hard concrete, steel skeleton by the larger radial pressure, and with the feeding side of the rolling and rotation process, repeated role is gradually strengthened, resulting in Skeleton deformation, displacement. The way to avoid this is to enhance the overall rigidity of the steel frame, to strengthen the fixing of the skeleton in the pipe mold, and to control the steel bar of the protective layer into the U-shaped steel bar and increase the error to about 2mm. (2) the inner and outer walls collapse The phenomena of wall collapse, wall separation and pipe - die separation are the quality problems of suspension pipe, especially in the environment of low temperature. With the increase of diameter, the self - arching effect of circular arc decreases. Wall thickness increased, the upper part of the concrete gravity increased. While lifting the proces

2018-04-28

Failure analysis and troubleshooting for Wire Cage Welding Machine

Wire cage welding machine used in the production of steel cage, put the tube in the cement machinery mould system for the production of a reinforced concrete pipe, but in actual use may appear may appear unstable failure of welded steel, the following is the analysis of cause of trouble and remedy method. Fault: 1, steel surface oil and corrosion. 2,. Welding wheel too groove 3 deep groove welding wheel, welding wheel or conductive wheel pressure is too small 4, conductive block or conductive wheel wear. 5 welding of two primary side of the transformer connected copper foil, poor contact steel, the contact surface oxidation or the fastening screw loosening. 6 conductive copper sleeve groove deep, loose slot, dirty. 7, welding voltage is too low. Method: to replace steel or pickling processing; car repair; adjustment; replacement or repair; clean and tighten; replacement tank; adjust the voltage.

2018-04-28

steel wire Button Head Forming Machine

This machine is used to form button head on both ends of PC Wire (Bar) by direct heating method. It is used for the production of pre-tensioned piles and poles The machine consists of clamp chuck, electrode head, and double acting air cylinders with multiple chambers. The machines installed with adjustable control device to automatically control the air pressure, heating time, heating temperature to ensure consistency of button head strength and shape

2018-04-28

Vertical Reinforced Drainage Water Concrete Pipe Making Machine

Vertical reinforced drainage water concrete pipe making machine produces all kinds of unreinforced cement pipe of tongue and groove, plain top, bell and spigot, well pipe with the length of 1000mm, inner diameter of 150-1000 mm with the raw materials of limestone, slag, sand and cement. All tubes and pipe are shaped once, and released immediately. Resistance to inner pressure can reach 0.5mpa, and the efficiency is 10-20 piece/hour. They are widely used in municipal drainage, pumping well for irrigation, highway culvert and so on. It has special characters like less investment, fast returns, high profit, extensive uses.

2018-04-28

Features of electric prestressed concrete pole making machine

Features of electric prestressed concrete pole making machine 1. Saving a great deal of steel, about 30~70% (employing cold drawn steel wire can save 30%~60%; employing high stress steel wire can save 40%~69%). 2. Crack resistance can increase about 3~5 times. 3. Rigidity increases 1~3 times. 4. Reducing the cost (using cold drawn steel wire can reduce 25%~40%; using high stress steel wire can reduce 12%~21%). 5. Good durability, can delay the existence and expansion of cracks. 6, Protect the environment on which human beings depend on for existence, and reduce the deforestation.

2018-04-28

Crushing & Screening Machines

Designs, manufactures and supplies stationary and mobile crushing, screening and washing plants, plants for recycling of wastes, building materials and asphalt. All types of crushers, screens, feeders, belt conveyors, batch and continuous machinery and systems for the processing of raw materials, compounds, waste and residues in the fields of Ceramics, glass, building materials, chemicals, molding sand, technical products, surface finishing materials, metallurgy, agricultural chemicals and environmental protection.

2018-04-28

Concrete Spun Pole Machines

Complete equipment of Spun Pre-stressed Concrete Pole and pile and Concrete Batching Plant. Provide turnkey project for the design and consultation of manufacturing SPC pole pile, decorative poles, transmission pole street lighting poles plant. Supply all necessary ancillary equipment from spinning machines, cage welding machines, buttonhead forming machine, wire handling equipment, conveyor system, filling stations, molds, pre-stressing equipment, lifting beams, coil stands, inserts, etc.

2018-04-28

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HAMAC AUTOMATION EQUIPMENT CO., LTD : +86-15136236223 WhatsApp: 0086-15136236223 (Wechat, Viber, Line) Email : [email protected] Address : 57th, Kexue Avenue, National HI-TECH Industrial Development Zone, Zhengzhou, China.

Philippines Local Office : +63 9328631301 Contact Person: Elayne Address : 389 gen luna cor Ilang-ilang st. Baritan malabon city, Manila, Philippines

Concrete Mixer

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Floor climbing Hydraulic Concrete Placing Boom

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