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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......
1052 
Lily
Ultrasonic flaw detection and quality rating method for steel castings (abstract) GB 7233-87
Abstract
This study focused on the ultrasonic nondestructive testing and quality evaluation method of cast-steel parts. The study reviewed and evaluated the current testing capabilities of various establishments, including the simulation tests and judgment criteria of surface and internal defects......
GB 13013-91 Hot-rolled straight and smooth round bars for reinforced concrete
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Hot rolled straight round steel bars for reinforced concrete in GB 13013-1991 has been the most commonly used non-alloy and low alloy steel bars in China, used for the construction and reinforcement of concrete structures.
The steel bars used in GB 13013-1991 have good plasticity and toughness,......
ISO9000 quality management and quality assurance series of international standards
ISO 9000 Quality Management and Quality Assurance Series International Standards
ISO 9000 is a family of quality management and quality assurance standards developed and published by the International Organization for Standardization (ISO). They are used primarily to certify an organization’s ca......
Common terms used in steel standards
Steel Standards Terminologies
Steel is one of the most widely used materials in the world, with many different uses ranging from construction to automotive to industrial. As a result, there are a large number of steel standards that have been created in order to specify and classify the different......
GB 2975-82 Sampling regulations for steel mechanical and process performance tests
GB 2975 - 82 Specification for Sampling and Testing of Mechanical and Process Properties of Steel GB 2975 - 82 is a national standard for sampling and testing of steel for selection and identification purposes. This standard covers the various methods for sampling and testing steel properties relat......
Comparison table of steel grades between my country and foreign major industrial countries
Steel Number Comparison between China and Major Industrial Countries
Steel is an important material in economic and social development. Steel is widely used in various industries such as transportation, construction, energy and electronics. Different countries have different steel grades and stan......
Basic knowledge of steel - steel grades and names
Steel is a material used for a variety of applications, and each individual grade of steel has distinct characteristics and properties. In order to ensure that the specific steel is used for a specific purpose, steel grades are denoted by a series of numbers and letters. There are a variety of sta......
Alloy structural steel designation method
Alloy Structural Steel Grade Designation Method
Alloy structural steel is a type of special steel used in the construction of buildings, machines and tools. It is made of a variety of elements added in certain proportions. The different elements lead to different mechanical properties, and in cer......
20CrH use
20CrH Steel Introduction
20CrH steel is a general purpose low alloy steel which is commonly used to manufacture automobile and other machineries. It is also used as a structural steel and castings. It is widely used in China and other countries for making high temperature components like bearing,......
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