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Search results for keyword: 77
Riser
, Computers in the Classroom The rise of computer technology in classrooms over the past decade has produced both positive and negative effects. As computers have become more advanced and accessible, they have been implemented as an educational tool in a variety of ways. In order to maximize the ......
tags: can computers students canyon grand its
1031
Hazel
GB 5771-86 Diesel engine fuel injection pump delivery valve assembly technical requirements
,关于柴油机喷油泵出油阀偶件的技术条件。 Injection pumps are among the greatest advancements in diesel engine fuel delivery systems. The primary purpose of an injection pump is to control the timing and quantity of fuel injected into the engine. Outlet valves play a key role in determining the para......
GB12358-90 General technical requirements for gas detection and alarm devices in the working environment
Technical Requirements of General Gas Detection Alarms in GB12358-90 Workplace Environment The main purpose of this technical requirement is to standardize the requirements of general gas detection alarms used in the workplace environment, to ensure the safety of staff and the safety of workplace......
tags: requirements product shall alarm gas device
1053
Sophie
GB50177-93 Specifications for Design of Hydrogen and Oxygen Stations
Hydrogen and Oxygen Station Design Specification Hydrogen and oxygen are the basis of many industrial and chemical processes. The presence of both the material in an appropriate quantity is crucial in maintaining the quality of products being manufactured. For this reason, it is imperative that a......
Forging Technology: Process Characteristics of Die Forging on Screw Press
? Introduction Introduction to Technology of Screw Press On Die Forging Forging is an ancient metalworking technology developed over the ages. It is the process of deforming metal in a plastic state through compressive force applied to it in one or more determined directions either by open die o......
tags: screw die forging metal spin forging
1053
Sophia
37CrNi3
GB/T 1220-2007, High-quality carbon structural steel, is one type of steel that has been widely used in various industries over the years. This type of steel is made from a blend of iron and carbon, with other elements and alloys added to create different grades. GB/T 1220-2007 is suitable for a v......
tags: steel gbt 12202007 steel good 37crni3
1053
Liam
ASTM A844/A844M-1993 General requirements for 9% nickel alloy steel plates produced by the direct quenching process for pressure vessels
ASTM A844/A844M-1993 This ASTM A844/A844M-1993 standard specifies the requirements for Grade 9% Nickel Steel plates used in pressure vessels. It applies to plates made by direct quenching and tempering process. Grade 9% Nickel Steel is an age-hardening nickel-iron-chromium alloy. Nickel increas......
tags: steel nickel 9 material mechanical alloy
1027
Oliver
Aluminum and aluminum alloy drawing (rolling) pipe for industrial use GB 6893-86
1 Introduction The manufacture of aluminum and aluminum alloy pipes using the method of drawing or rolling is a popular method of fabrication in the industrial sector. This method is known as GB 6893-86 and is set out in the Standard for Industrial Aluminum and Aluminum Alloys Rolling (Pulling) P......
Alloy structural steel (GB 3077-88) (7)
Alloy structural steel (GB 3077-88) (VII) Alloy structural steel (GB 3077-88) (VII) refers to steel alloys which are widely used in engineering and construction applications such as automobiles, bridges and buildings. These alloys consist of iron, carbon and other alloying elements such as nickel......
tags: steel alloy gb steel alloy kind
1027
Sophie
General requirements for surface quality of hot-rolled steel sheets GB T14977-94
General Requirements for the Surface Quality of Hot Rolled Steel Sheets Hot-rolled steel sheets are widely used in construction engineering and other industries due to their excellent characteristics. To ensure a good performance, it is necessary to meet the surface quality requirements. General ......
tags: surface steel quality steel hotrolled surface
1058
Sophia
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