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Derrick installation
Introduction
The purpose of this paper is to discuss the importance of proper well installation and maintenance. Wells are an important part of any property, and their success relies on proper installation. A well’s success depends on efficient use of the resources used during installation, and ......
1080 
Erica
Influence of finishing rolling process on quality of crankshaft thrust end face
The Impact of Precision Rolling Technology on the Quality of the Crankshaft Pressing End Face
Abstract
The crankshaft end face is an important part of the crankshaft. In recent years, automobile companies have begun to use precision rolling technology to improve the quality of the crankshaft end ......
Visual symbols for operation instructions of metal cutting machine tools (7)
1. On/off switch
This symbol indicates the on/off switch of the CNC machining process. This symbol activates the machine’s digital components such as its spindle and table.
2. Direction control knob
The direction control knob is used to switch between clockwise and counterclockwise motion and is......
Visual symbols for operation instructions of metal cutting machine tools (5)
Symbols Associated with Metal Cutting Machine Tool Operations
Operating a metal cutting machine tool is a complex process that requires the proper understanding and utilization of a variety of symbols and instructions. There are various signs, diagrams and instructions that must be understood in ......
Industry standard for automation instruments and devices
Automation Instrumentation and Devices Industry Standard
Automation instrumentation and devices are an essential part of modern industry. Automation instrumentation and devices provide a reliable, easy to use platform for monitoring processes and controlling equipment. Automation instrumentation ......
JGJ81-2002 Welding Technical Regulations for Architectural Steel Structures (Part 14)
Welding processes
Welding processes used in construction steel structures can be divided into three categories: manual welding, mechanical welding and self-shielding welding.
Manual welding is one of the most commonly used welding processes. It can be used for both mild steel and stainless steel......
Comparison table of steel grades at home and abroad
Steel Number Comparison Between Domestic and Overseas
Steel is one of the most important commodities in the world, as it is used in a wide range of applications such as in the construction and machine industries. Steel manufacturers around the world assign unique numbers to their respective steel......
Density of commonly used steel
翻译 The density of commonly used steel is an important physical and chemical parameters to measure the qualityof steel. Generally, the density of steelis 7.8-8.0 g/cm3. The most commonly used steel includes Carbon steel, containing carbon content up to 2.1%, belongs to low alloy steel. It has good ......
GB/T 706-1988 Dimensions, shapes, weights and allowable deviations of hot-rolled I-beams
GB/T 706-1988 Hot Rolled Steel Angles Dimensions,Shape,Weight and Tolerances
This GB/T 706-1988 standard specifies the size, shape, weight, and tolerance for hot rolled steel angles. Hot rolled steel angles are widely used for many applications, such as various structures and engineering projects......
Technical conditions for cold-formed steel (GB/T 6725-1992)
GB/T 6725-1992 Cold-bent steel technical conditions
This general technical conditions for cold-bent steel GB/T 6725-1992 stipulates the order and technical requirements for the cold-bent of steel plates and narrow strips.
This code is applicable to cold-bent steel plates with thickness of ≤1.5......
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