Ningbo Yuema fastener, the most popular building h

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Ningbo Yuema fasteners, a popular building hardware supplier in Shenzhen, can be divided into five categories according to their applications: door and window hardware, plumbing hardware, decoration hardware, screw hardware and kitchen equipment. ① Door and window hardware. All kinds of metal and non-metal fittings installed on doors and windows of buildings. There are building door locks, handles, supports, hinges, door closers, handles, latches, window hooks, anti-theft chains, inductive door opening and closing devices, etc. ② Plumbing hardware. Hardware used in water supply and drainage system, heating system and toilet of buildings. There are faucets, showers, downcomers, toilet accessories, lavatory accessories, Jacuzzi accessories, valves, pipe connectors and 8. Speed accuracy:: ± 0.5%; Other hardware of toilet. ③ Decoration hardware. Hardware used in water supply and drainage system, heating system and toilet of buildings. There are combined metal ceiling, lightweight flexible partition, metal decorative panel, etc. ④ Silk nails. A general term for all kinds of wires, nails, and shaped products made of carbon steel or non-ferrous metals. It is widely used in construction projects such as buildings. ⑤ Kitchen equipment. It mainly includes washing table, operation table, vegetable chopper, stove, stove, oven, kitchen cabinet, storage device, range hood, etc

building hardware starts from blacksmiths, coppersmiths and tinsmiths. China had nail making workshops in the Tang Dynasty, where nails, door bolts, locks, door rings, etc. were made by hand. However, due to the wooden and stone structures used in ancient buildings, the development of building hardware has been very slow in the past few thousand years. After the 19th century, with the general use of materials and the needs of social life, Jin judged whether the experiment was normal in the process of experiment. Building hardware developed rapidly, and many small factories or workshops producing steel nails, hinges, bolts, window hooks, faucet valves, metal wire woven window screens, etc. emerged. Later, mechanical processing equipment was gradually used to replace manual production, forming many specialized enterprises. With the continuous improvement of the standards of various building facilities, modern building hardware products have developed from a single variety to a series. The requirements for its aesthetic metrology grating to measure the displacement by using the moire fringe phenomenon of the grating and the decorative effect are becoming higher and higher. The production process of building hardware products has also made great progress. Most products have been developed from semi-manual and semi-mechanical operation to semi-automatic or full-automatic mechanical assembly line production. Building hardware has been expanded from traditional copper alloy and low carbon steel to zinc alloy, aluminum alloy, stainless steel, plastic, glass fiber reinforced plastic and various composite materials

gasket is a mechanical seal between two objects, which is usually used to prevent the two objects from being subjected to pressure, corrosion, and natural thermal expansion and contraction of the pipeline. Since machined surfaces cannot be perfect, irregularities can be filled with shims. Gaskets are usually made of sheet materials, such as pad paper, rubber, silicone rubber, metal, cork, felt, neoprene, nitrile rubber, glass fiber or plastic polymer (such as polytetrafluoroethylene). Gaskets for specific applications may contain asbestos. A washer is a hole (usually in the middle) in a thin plate (usually circular) and is usually a threaded fastener for distributing the load. Other uses are as spacer, spring (Belleville gasket, wave gasket), wear pad, pre display device, lock device. Rubber gaskets are also used in faucets (valves) to cut off the flow of liquid or gas. Rubber or silicon gaskets can also be used to reduce fan vibration. Usually the outside diameter of the gasket is about twice the inside diameter

t-shaped bolt can be directly put into the aluminum profile groove. It can be automatically positioned and locked during installation. It is often used in conjunction with flange nuts. It is a standard supporting connector when installing corner pieces. It can be selected and used according to the profile groove width and different series of profiles. T-bolts are movable anchor bolts

hexagon nuts are divided into type I, type II and thin type according to the nominal thickness. Nuts above grade 8 are divided into type I and type II. Type I hexagon nuts are the most widely used. Type 1 nuts are divided into three grades A, B and C. The Grade A and B nuts are suitable for machines, equipment and structures with small surface roughness and high precision requirements, while grade C nuts are used for machines, equipment or structures with rough surface and low precision requirements: type II hexagon nuts are thick, and are mostly used in occasions where assembly and disassembly are often required. Type I nut refers to ordinary hexagon nut with nominal height m ≥ 0.8d, and its type and size shall comply with gb/t6170; while the height of type II nut is higher than that of type 1 nut, and its type and size shall comply with gb/t6175. There are two purposes for adding type II nuts: one is to obtain a relatively low-cost nut without heat treatment by increasing the height of the nut

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