China Weifang Zetian Pipes Industry Co., Ltd. Company News

How to deal with the noise problem caused by grooved pipe fittings? As a manufacturer of grooved pipe fittings, let the editor take everyone to understand! 1. When impacted by external forces, there will be a certain displacement between each other, forming three-dimensional deformation. The grooved pipe fittings will not be affected, avoiding mutual friction between the pipe fittings, which can effectively reduce noise.   2. The sealing ring installed inside the grooved pipe fittings can absorb part of the external force and resolve it when the building is severely damaged, preventing the pipe fittings from deforming due to excessive external force and affecting the overall appearance performance. It has certain earthquake resistance and effectively reduces The presence of noise.

During the casting process of grooved pipe fittings, what detailed requirements need to be understood? As a Shandong grooved pipe fittings manufacturer, let the editor take everyone to understand! 1. Check whether the surface of the semi-blank pipe fittings is smooth enough and whether there are flaws or other defects. If these problems exist, the spray paint on the surface will be easily scratched, so such defects must be properly dealt with. 2. Check whether there are holes in the semi-blank parts. This is very important and also difficult in inspection, because there are some very small places that are difficult to detect with the naked eye. If you are not careful, many "fish that slip through the net" will appear, causing Quality issues. 3. After purchasing semi-finished products, it is recommended to set up a special inspection department in the factory to conduct complete inspections of all semi-finished products. This will help improve the quality of grooved pipe fittings and eliminate problematic products.    

Pipe end inspection The outer surface of the pipe from the pipe end to the groove must be clean and smooth, without burrs, dents, bulges (including welds), peeling paint, rolling indentations, etc. It must be inspected before installation to ensure that there are no such things that affect the sealing of the rubber ring. defect.   Check and lubricate rubber rings Inspect the rubber ring to ensure it is suitable for all working conditions. Apply a thin layer of suitable lubricant to the sealing lip and outer surface of the rubber ring, and place the rubber ring during installation.     Install rubber ring Insert and position the rubber ring onto the pipe end, making sure the rubber ring does not hang over the pipe end.

Structural inspection of cast metallurgical materials The chemical composition of the casting material determines the mechanical properties of the material. Strict pouring temperature control, pouring time control and molten iron weight measurement control can ensure the structural properties of the material. The company uses advanced means to detect the smelting process, such as spectrum analyzers, rapid molten iron analyzers in front of the furnace, molten iron temperature testers, etc., so that each furnace of molten iron can obtain a standard judgment before pouring, and the casting composition can be controlled online during the smelting process.   Material mechanics experiment The material mechanical properties laboratory is responsible for the mechanical property testing of all metal products. It conducts comprehensive tensile, compression, yield, and elongation tests on bolts, nuts, and castings to ensure that each indicator meets the requirements of FM and UL standards.   Rubber physical properties experiment The company's rubber physical properties laboratory is responsible for testing the mechanical properties and aging properties of each batch of sealing rings, including Shore hardness, tensile strength, elongation at break, compression deformation after hot air aging and other indicators, reaching FM , UL standard.   Molding sand performance inspection Molding sand performance testing includes molding sand permeability, molding sand strength, raw sand mud content, etc., providing foundries with reasonable sand preparation plans to avoid molding sand performance fluctuations and reduce casting defects.   Airtight experiment The purpose of the air-tightness test is to test the sealing performance of the pipe fittings. Gas has strong penetrating power. The air-tightness test can expose the pores and blisters in the casting and eliminate the risk of water leakage.   Performance experiment The grooved pipe fitting performance test laboratory is established in strict accordance with the relevant requirements of GB5135.11-2006, FM, and UL. It can conduct all performance tests according to their requirements, including static pressure sealing, pressure resistance strength, negative pressure sealing performance, bending moment, rotation Bending moment, vibration, low temperature resistance, fire resistance, etc. The Grooved Pipe Fittings Performance Laboratory is responsible for the identification type test, routine type test and factory performance test of new grooved pipe fittings products to ensure that each batch of grooved pipe fittings shipped meets the relevant standards.

When choosing sealing rings for grooved pipe fittings, what should you pay attention to when purchasing them? As a manufacturer of grooved pipe fittings, let me take you through them!   1. Working medium and working conditions When selecting the O-ring seal material, the compatibility with the working medium must first be considered. The pressure, temperature, continuous working time, operating cycle and other working conditions of the seal must also be comprehensively considered. If used in rotating applications, the temperature rise caused by frictional heat needs to be considered. Different seal materials have different physical and chemical properties. 2. Sealing form According to the load type, it can be divided into static seal and dynamic seal; according to the sealing purpose, it can be divided into hole seal, shaft seal and rotating shaft seal; according to its installation form, it can be divided into radial installation and axial installation. When installed radially, for shaft seals, the deviation between the inner diameter of the O-ring seal and the diameter d2 to be sealed should be as small as possible; for hole seals, the inner diameter should be equal to or slightly smaller than the diameter d1 of the groove.

When testing grooved pipe fittings, how is the specific pressure test performed? As a manufacturer of grooved pipe fittings in Shandong, let the editor take everyone to understand! After the grooved pipe fittings are installed, a pressure test must be performed. If the pressure test is normal, it can be used normally. If the test fails, it must be reinstalled. Otherwise, the pipe fittings will burst due to being unable to withstand the pressure during use, affecting the transmission effect. Before testing the grooved pipe fittings, the inside of the grooved pipe fittings must be filled with water and gas, and then a pressure pump is used to fill the inside of the grooved pipe fittings with pressure until the pressure reaches normal operating specifications. Grooved pipe fittings must be tested with clean water during the test project. The test pressure and pressure measurement time must be tested with the normal pressure that the grooved pipe fittings can withstand. Grooved pipe fittings for different purposes bear different pressures, so they must be tested according to the pressure during use. Grooved fittings are used for pressure testing.