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GB/T12770-2002 "Stainless Steel Welded Steel Pipes for Mechanical Structures" is a recommended national standard (instead of GB/T12770-1991)
GB/T12770-2002 Mechanical Structural Stainless Steel Welded Pipe
This national standard GB/T12770-2002 Mechanical Structural Stainless Steel Welded Pipe is presented by the Standardization Administration of the PRC and the China Metallurgical Industry Association.
This standard supersedes the GB......
27/06/2023 
1039 
Liam
Standard GB 8163-87 Stainless steel seamless steel pipe for fluid transportation
GB 8163-87 Seamless Steel Pipes for Fluid Transportation
This Standard specifies the technical requirements, size, shape, weight, technical performances, and related requirements of seamless steel pipes (hereinafter referred to as pipes) for fluid transportation. This Standard belongs to state sp......
Alloy structural steel hot-rolled thick steel plate (GB/T11251-1989)
Alloy Structure Steel Hot Rolled Thick Steel Plate (GB/T11251-1989)
Alloy structure steel hot rolled thick steel plate (GB/T11251-1989) is a grade of ordinary steel containing carbon, silicon and manganese as the main elements. It is mainly used in construction and engineering structures, and can......
GB 9948-1988 Seamless Steel Tubes for Petroleum Cracking
GB 9948-1988, “Seamless Steel Pipes for Petroleum Cracking”, is a Chinese standard that specifies the classification and technical requirements for seamless steel pipes used in the petroleum cracking industry.
Seamless steel pipes for petroleum cracking are mainly used for conveying crude oil, ......
Analysis Report on Causes of Roller Destruction in Hot Strip Rolling
Failure Analysis Report of Hot-Rolled Band Steel Rolling Rollers
Abstract
The hot-rolled band steel rolling rollers have failed due to the presence of certain force, temperature or fatigue conditions. The aim of this report is to identify the causes of failure and propose a method for corrective......
Metallographic diagram of 45 steel (after quenched and tempered by 680°C gas nitrocarburizing)
Microstructure of 45 Steel (Nitrogen and Carbon Co-permeated After Annealing at 680 °C)
45 steel is one of the most commonly used steels in industry due to its excellent mechanical properties, such as good formability, welding ability, and yield strength. To improve its fatigue durability, there......
Analysis of Roll Shaft Breakage
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Rolling Shaft Fracture Analysis
With the development of industry and the continual emergence of new materials, there is an increasing demand for manufacturing and machining of materials with extreme hardness and strength. Rolling is one of the most common methods used to shape materials......
billet defect
Rolled Steel Defects
Rolling is an important process used in the manufacture of steel products. The process involves flattening steel ingots and billets into thin sheets or plates by passing them through heated rolls. Most steel used in the marketplace today is rolled. To ensure that the rolled s......
Continuous rolling and continuous rolling constant
Rolling is one of the important manufacturing processes among the sheet metal processing technologies. It is a type of metal forming in which two rollers rotate in opposite directions to form a flat sheet of metal into required thickness. Rolling is the process of plastically deforming the metal b......
forging flat test
Introduction
Flatten testing is an important measure for assessing the cohesion and strength of different building materials during the construction process. Flatten tests enable the construction team to assess the bond between layers of material such as concrete, coatings and fill structures use......
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