When steel is heated, defects such as oxidation, decarburization, overheating, and overburning may be generated. For reducing and avoiding these defects so as to produce steel products with good quality, one should properly heat the steel material. Oxidation When the metal is heated to high temperature, the surface...

Choose the right places, warehouses 1. The places, warehouses for keeping steel materials should be cleaned, easy for drainage, away from the factories and mines that generate harmful gases or dust. Make sure to remove all the debris, weeds to keep the steel clean. 2. In the warehouse, salt, cement, and materials that...

PE pipes are commonly used in water supply system. So what are their classification and characteristics? Let's take a look. In China's municipal pipe market, drainage pipes and gas pipes are in great demand. And because PE (polyethylene) materials are of high strength,high temperature resistance, corrosion resistance,...

What are the general requirements for equipment layout design? 1. Meet the requirements of the process flow, and the disposition of equipment should be in the order of logistics. 2. The fire separation distance among equipment, buildings and structures should be in accordance with the requirements for production safety...

Hygienic piping can be used for transporting high-purity liquids and gases between equipment in the pharmaceutical industry, where has specific requirements for the materials of pipes with respect to ensuring that fluids won't be contaminated and the pipes won't be corroded during the transporting process. With...

(3) Installing the slow closing check valve on the outlet pipe of the large diameter pump   The slow closing check valve can effectively eliminate the water hammer caused by a stopped pump. There must be overflow pipes for suction wells, because a certain backflow will happen in the operation of the slow closing...

There are many prevention measures for water hammers. Different measures will should be taken according to the possible causes of water hammers. 1. Reducing the flow velocity of the water pipeline Reducing the flow velocity of the water pipeline can lower the pressure of the water hammer to a certain extent, but this will...

Cold rolled seamless pipes Cold rolled seamless pipes（GB3639-2000）are cold drawn or cold rolled precision seamless steel pipes with high accuracy of the dimension and good finish of the surface used for the machinery and hydraulic equipment. The cold rolled process refers to the method adopted to process the steel plates...

When sudden power cuts happen or valves are closed too fast, water shock waves will be generated like hammers beating against pipes due to inertia of pressure flows, which is known as water hammers. The force generated by the water shock wave coming back and forth is great sometimes, which will break the valve and the...

Cast iron pipes are made of casting cast iron, which are applied to water supply, drainage and gas pipelines. Cast iron pipes include cast iron straight pipes and pipe fittings. The cast iron pipe can be divided into the gray cast iron pipe and the ductile iron pipe based on the material. Connection types of cast iron...