concrete Pump pipe fittings, concrete pumping pipes are generally divided into two types, 125 and 150, and each of them has a high pressure and a low pressure. The low pressure type of the 125 type pump tube is a pipe with an outer diameter of Φ133, the high pressure is a pipe with an outer diameter of Φ140; the low pressure type of the 150 type pump pipe is a pipe with an outer diameter of Φ159, and the high pressure is a pipe with an outer diameter of Φ168. The pipe head of the pump tube is a specially processed pipe joint that is connected to the pipe body by welding, and the connection of each pipe is connected by a pipe card processed by a precision casting process.
Concrete pump and pump parts: HBT30, 40, 50, 60, 70, 80 concrete pump pipes; various floor, horizontal, straight, elbow, reducer, rubber hose, rubber seals , cleaning balls, cleaning columns, cleaning pistons, high and low pressure steel cards and conveying products of mixing stations. Concrete pump truck boom tubes such as Zhonglian, Sany, Elephant, Xugong, Fangyuan, Hainuo, Wuling, Chutian 85B, Shichuan Island 90B; equipped with high-pressure wear-resistant alloy J55 straight pipe, precision casting wear-resistant bending Head, piston and other pump accessories.
High wear-resistant pipes have been developed relying on high-tech equipment and technology. This pipe is made of special material steel pipe, inner wall quenching, carburizing, heat treatment and other high-tech processes, which improves the service life of the pipe by 3-5 times, and makes the company a domestic production pipe and fitting for concrete pump. Large professional manufacturing plant.
Putzmeister concrete pump elbow Sany concrete pump elbow Schwing concrete pump elbow
The BLG12,15,18m distribution machine produced by the Ministry of Construction is a new product approved by the Ministry of Construction. It has a beautiful appearance and a wide range of fabrics. It is widely used in various projects, and its economic benefits are particularly remarkable.
The variable elbow is a kind of pipe used for turning the pipe. The proportion of all the pipe fittings used in the pipe system is **, which is about 80%. Usually, the elbows of different materials or wall thickness are different. Forming process. At present, the forming process of the variable diameter elbow commonly used in manufacturing plants has hot push, stamping, extrusion and so on.
a. hot push forming
The variable elbow forming process adopts a special elbow pushing machine, a core mold and a heating device, so that the blank placed on the mold moves forward under the push of the pusher, is heated during the movement, expands the diameter and bends the shape. The deformation characteristic of the hot push elbow is to determine the diameter of the tube blank according to the law of the volume change before and after the plastic deformation of the metal material, the diameter of the tube blank used is smaller than the diameter of the elbow, and the deformation process of the billet is controlled by the core mold to make the inner arc The compressed metal activity compensates for other parts that are thinned by the expansion of the diameter, thereby obtaining an elbow with an average wall thickness. The hot push elbow forming process has a beautiful shape, an average wall thickness and continuous homework, and is suitable for mass production. The characteristics are thus the main forming method of carbon steel and alloy steel elbows, and also used in the forming of stainless steel elbows of certain specifications. The heating method of the forming process is medium frequency or high frequency induction heating (the heating coil can be more Circle or single turn), flame heating and reverberatory furnace heating, which heating method is used depends on the energy content of the formed product.
b. Stamping forming
The stamping forming elbow was first used in the batch forming process for producing variable diameter elbows. At present, it has been replaced by hot pushing or other forming processes in the production of elbows of common specifications, but it is produced in some specifications of elbows. The number is small, the wall thickness is too thick or too thin. The product is still in use when it has special requirements. The stamping of the elbow is made by the tube blank equal to the outer diameter of the elbow, and is directly pressed and formed in the mold by using a press. Before, the tube blank is placed on the lower mold, the inner core and the end mold are loaded into the tube blank, and the upper mold is moved downward to start pressing, and the elbow is formed by the constraint of the outer mold and the support of the inner mold.