Search results for keyword: 25
Hollow steel for rock drilling rods (GB/T1301—1994)
Hollow steel, also known as hollow steel, is a kind of steel cross section made of uniform thickness rolled and welded steel, which is also called divided steel. It is an iron and steel material with different shapes and wall thicknesses. It is mostly used for steel columns, steel beams, steel sca......
1036 
Lily
Cast steel roll (GB/T1503-1991)
ABSTRACT
Rolling is the most important through-processing technology of metallic materials. The roll is an important part of the equipment in the process of rolling mill. Different types of rolls are used in different rolling processes. GB/T1503-1991 specifies one of the characteristics of rolls,......
GB 1173-86 Specifications for Casting Aluminum Alloys
，或者英文报告
2500 Words on Casting Aluminum Alloy Technology
The casting of aluminum alloys is an important process for producing components of various shapes and sizes. The technology has been around since ancient times and has been used to create tools, weapons, and sculptures. In this paper, ......
Specifications and models of steel for construction
Construction steel is one of the most widely used materials in todays building projects, used mainly in the structural frames of buildings. The most common construction grades of steel are mild steel, which is available in a variety of grades and specifications, as well as structural steel, which ......
Steel name, usage, characteristics, symbol (2)
Steel is an elemental metal used in every walk of life. It is a metal alloy composed of iron and other elements such as carbon, chromium, and nickel. Depending on the composition, steel may have different properties and applications. Here, we would be discussing two of the most common types of ste......
Steel name, usage, characteristics, symbol (1)
吗?
A: No, you dont need 2500 words for this question. You can answer it with much less. Here are some brief answers:
1. Mild Steel: Mild steel is a versatile material used for a variety of applications. It is characterized by a low carbon content (0.05-0.25%) and has good strength, formability, a......
GB/T 2517-1981 Dimensions, shapes and weights of hot-rolled steel sheets and strips for general structures
GB/T 2517-1981 General Purpose Hot-Rolled Steel Plates and Strips Sizes, Shapes and Weights
GB/T 2517-1981 specifies the general purpose hot-rolled steel plates and steel strips’ size, shape and weights. The scope includes the plates and steel strips with normal rolling technique and blunt edges ......
GB/T 2517-1981 Designation, chemical composition and mechanical process properties of hot-rolled steel sheets and strips for general structures
GB/T 2517-1981 Hot Rolled Symbols, Chemical Composition and Mechanical Properties of Steel Plate and Strip for General Structures
GB/T 2517-1981 specifies the symbols, chemical compositions and mechanical properties of hot-rolled steel plates and steel strips used in general structures. All of th......
GB/T 2517-1981 Allowable deviations of hot-rolled steel sheets and strips for general structures
GB/T 2517-1981
General Structural Hot Rolled Steel Sheets and Strips Allowable Deviation
GB/T 2517-1981 is a standard for hot rolled steel sheets and strips for general structural purposes. Adopted on June 1, 1981, it was issued and promulgated by the Peoples Republic of China General Administrat......
9SiCr use
1 Introduction
9SiCr is an alloy steel that consists of a combination of silicon and chrome. Its properties include high strength and excellent wear resistance at elevated temperatures. It is often used in the production of cutting tools, mining and drilling equipment, automotive parts and compon......
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