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Analyze various damage conditions, causes and measures that …

Card injury Damage state: A so-called card injury is a surface damage caused by a summation of a minor burn caused by a sliding surface injury. Linear scratches in the circumferential direction of the slide surface and rolling surface. The trochoidal flaw on the end of the roller is caught near the ......

Analysis of Expanded Bolts and Their Installation Design

When the expansion pipe is installed, the expansion pipe is filled with 30# (slightly cement and water ratio, slightly smaller sand ratio) concrete as reinforcement and anti-loose door. In the design of the catenary, all the pillars and columns are supported by pre-embedded bolts. The embedded par ......

Biomass boiler classification

For the time being, biomass boilers are roughly divided into two categories according to their use: one is biomass thermal energy boilers, and the other is biomass electric energy boilers (this type of boiler converts thermal energy into electrical energy), and the work of the two boilers The prin ......

Aluminium-steel dissimilar material welding

【China Aluminum Industry Network】 Aluminum alloys have excellent properties such as low density, good corrosion resistance, electrical conductivity and thermal conductivity. Using aluminum alloys instead of steel can greatly reduce the quality of welded structures. The steel has good w ......

Buying a good tile requires three major standards

In the home decoration, you must buy ceramic tiles. How to buy valuable and satisfactory ceramic tiles also has certain knowledge. Because there are many ceramic tile brands in the building materials market and the quality of the products is uneven, the original tiles are not well understood. ......

The advanced nature of Shanghai Rally Machine

The advanced reliability of Shanghai Rally Machine Shanghai Enterprise Test Instrument Co., Ltd. specializes in the production (supply) sales of Shanghai Rally products. The company has a good market reputation, professional sales and technical service team, with many years of experience in operat ......

Comparing Safety Shoes Standards, Understanding Safety Shoes…

Before understanding safety shoe standards, you need to understand the main components of safety shoes: Upper/upper: first layer leather (best breathability and resistance to stretch); second layer of cow skin (with good breathability and stretchability) Baotou: Stainless steel/non-metal syntheti ......

Positively stimulate steel prices continue to rise

Last week, the domestic steel market prices continued to rise, and steel prices continued to rise. Under the favorable stimulus of steady growth policies, the ** market performance was strong, and the continuous rise in yang led to a continuous increase in spot prices. At the same time, as ......

How to choose ceramic tiles in kitchen space decoration

What kind of tiles are used in the kitchen? First, the kitchen space is usually not very large, so when we buy kitchen tiles, we can consider smaller tiles. Because there are many cabinets in the kitchen, the back of the cabinet should not be tiled, because it is a waste to lay the tiles in s ......

The upstream of the photovoltaic industry is recovering from…

Abstract It is reported that the PV module and polysilicon industry located in the middle and upper reaches of photovoltaics have been questioned for a long time due to overcapacity. In the first two years of the industry's depression, even some orders or prices were lower than the cost, ......