The finished bracket is a bracket system in which the shaped channel steel and various connectors are directly produced by the factory, and then handed over to the construction personnel for on-site assembly. Mainly used in building water supply and drainage engineering, electrical engineering, subway support system, solar photovoltaic system, etc. advantage 1、槽钢、零部件实现模块化/标准化生产，可以提高生产效率和降低人工费； 2、成品支架系统安装方便、维修便捷（零部件易采购），有缩短工期，减少维修时间等优点。 3、通过不同配件的组装可以灵活搭配成各种应生产需求的式样，满足各种施工环境。主要应用 主要应用在建筑给排水工程、建筑电气工程、建筑暖通工程、太阳能光伏系统、地铁支架系统等系统中，不一而足。

The four-level line pipe is also called the British standard line pipe and the BS standard line pipe. When connecting, special sleeves should be used for connection. Note that the connection should be in the center of the connecting sleeve, the two connecting pipes should be close to the center of the sleeve, and the joint should be firmly fixed.

The Level 3 line pipe is also called JDG line pipe, national standard line pipe and iron line pipe. It adopts galvanized steel pipe and thin-walled steel pipe for jumper grounding, which overcomes the shortcomings of complicated construction and large loss of ordinary metal conduits, and also solves the problems of poor fire resistance and difficult grounding of PVC pipes. The best choice for dedicated protection lines.

Galvanized Seamless steel pipe, referred to as seamless pipe, is a steel pipe made of a single piece of metal with no joints on the surface. Galvanized Seamless steel pipes are generally used as pipelines or structural parts for conveying fluids, or pipelines for conveying oil, natural gas, gas, water and certain solid materials, etc.

Welded pipe, that is, welded steel pipe, is a steel pipe made of strip steel or steel plate after being crimped and formed. Widely used in water engineering, electric power industry, urban construction, petrochemical industry, chemical industry, agricultural irrigation, etc.; usually used as pipes for bridges, wharves, roads, building structures, etc.; also used for liquid and gas transportation, etc.

Plastic-lined fittings are also called plastic-lined pipe fittings, including elbows, tees, crosses, reducers, etc. It adopts the lining material and corresponding size of the same material as the steel-plastic composite pipe, and is used together with the pipe, which has the same anti-corrosion ability as the pipe, and has interchangeability and versatility. Mainly used in chemical industry, petroleum engineering, electric power engineering, pharmaceutical industry, mining industry, smelting industry, etc.

Water supply and drainage valves are often used in domestic water supply, fire protection systems and industrial water supply systems, and are generally used to control flow, water level, etc. Including water conservancy control valve, check valve, globe valve, valve, filter, etc.

Malleable iron, commonly known as malleable cast iron, is first cast into white cast iron castings, and then decomposed into flocculent graphite through malleable annealing to obtain malleable cast iron castings.

The fire valve is composed of three parts: the valve body, the opening and closing mechanism, and the valve cover. It is an important accessory for the control of industrial and construction pipelines. Mainly divided into butterfly valve, gate valve, alarm valve and so on.

Fire-fighting equipment refers to the automatic fire alarm system, indoor fire hydrant, outdoor fire hydrant, and other fixed facilities in the building. The categories of fire fighting equipment include automatic facilities, building facilities and sprinkler systems. It mainly includes sprinklers, reels, hoses, fire hydrants, etc.