In the day, industrial water pipeline device, lined with plastic pipe and pipe fittings is also a lot of use, pipeline equipment, we think that is the economy, the device is convenient and other elements, the use of lined plastic pipe and pure metal pipe compared to the information Selection of the composite data on the pipeline, lower costs, metal pipes are also simple rust, the use of cost comparison is high, so the use of lined plastic pipe channel pipe fittings.
Groove pipe production process to grasp the different, after the production of goods after the appearance of quality, the use of the role there is not the same, Xiao Bian in this construction unit, the purchase of fittings, select the production of talent, factory direct sales of enterprises, manufacturers strength, Good service, factory direct sales, save the middlemen profit, more economical and affordable.
1, the hoop pieces, trench fittings and transformers made of information should be used ductile iron, cast steel or forged steel, the material should be part of the current national standard "ductile iron" (GB / T1348) for excellent ball (GB / T11352) and "Excellent Carbon Structural Steel" (GB / T699) for cast iron, cast iron for general engineering
2, the fasteners should meet the following requirements: the mechanical properties of bolts should be "fit the mechanical properties of bolts, screws and studs} GB3098.1 8.8 requirements; nut mechanical properties should fit" fasteners Mechanical properties nut, coarse thread}} GB3098.2 in the 8 level request.
3, the composition of the clamp joints and branch joints of the hoop pieces, rubber seals and fasteners should be supplied by the production plant. Rubber seals should be placed in the clamp together with storage and storage, shall not be packaged separately. The fastener should be connected to the clip hole of the clip.
4, for the device with the groove-type pipe joints, trench-type pipe fittings must have the goods factory certificate and product brochures, commodity experiments to view the statement, arrived at the scene after the appearance of view, the quality of the design rules.
5, trench pipe fittings and pipe fittings in the loading and unloading, transport, accumulation, should be calmly, prohibited throwing, throwing, rolling, drag and violent impact. Do not touch with substances that are corrosive and harmful to rubber to prevent rain.
6, a rubber seal groove of the joints should be stored in a cool, boring, ventilation and heat does not touch the non-corrosive gas occasions.
The bending process of the elbow pipe is not the same as that of the bending process. The process of the tortuous section is the process of the continuous cooling and the subsequent tempering process of the controlled and controlled cold steel pipeline. Pipe fittings used in the pipeline convergence, in the construction of the building, the residential quarters of the day and industrial water supply pipeline, is a large demand for construction projects, water pipes connected to the end of convergence, there are usually several ways, now compared to the use of groove fittings In the water supply pipeline convergence, there is how the advantages of it?
1, thread connection, as follows: before the convergence, the hand will be screwed on the tube to check the degree of tight pipe thread. After the hand screwed, the pipe thread should be left to meet the installation of the margin can be tightened, or should use appropriate pipe or thread processing thread to adjust the amount of cutting. The thread of the pipe should be regular, if broken thread or thread, not more than 10% of the total thread deduction. The outer tube should be wrapped with the filler (oil hemp or raw tape) and then threaded. Fill should be clockwise and evenly tightly wrapped around the external thread, the pipe should be filled into the thread when the filler, not the packing out. Should use the appropriate pipe clamp, so that the tight connection of the thread. Thread should be tightened once, should not be back, tighten the root of the threaded thread should be exposed. Usually diameter 50mm below 2 to 3 teeth, diameter 65mm above 4-5 teeth. After the connection is damaged galvanized layer appearance and pipe thread exposed some, should be anti-corrosion treatment, and the interface without revealing oil or raw material belt.
2, the second approach is the flange connection, flange connection is mainly used in the often open, maintenance of the pipeline, such as pumps, water meters, check valves and shutters and other joints.
3, and then talk about the use of the recent comparison of the use of groove fittings, also known as groove-type convergence, with the roll groove method in the steel pipe rolling out of the groove, the seal into the tube end, the other end close, with two pieces Wrapped the seal ring and card people steel pipe groove, tighten the two bolts to complete the steel pipe seal convergence. Grooved fittings are shown below. Card pieces are usually selected ductile iron pieces, special occasions can choose corrosion-resistant stainless steel pieces or copper pieces, seals can be used according to different fluid media is not the same information, water system, the first choice of EPDM data sealing ring.