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Low temperature Charpy impact test method for metals GB 4159-84
，要求不少于2500 The Test Method of Low Temperature Charpy Impact Test for Metals
Low-temperature Charpy impact test is a kind of mechanical test which is usually used to measure the impact properties of metals. It is a test method used to measure the energy absorbed by a metal during fracture unde......
1025 
Alexis
Alloy structural steel bars for steam turbine bolts (YB/T158-1999)
Turbine bolt alloy steel bar (YB/T158-1999) Introduction
Turbine bolt alloy steel bar, also known as turbine rotor head bolt steel bar, is an important material widely used in the power industry. It is mainly used as a connecting bolt in turbines, generators and other high-speed and heavy-duty ro......
Lead and lead antimony alloy plate GB 1470-88
Lead and Lead-antimony Alloys Plate
Lead and lead-antimony alloys plates are metals made up of element lead, with small amounts of other elements, such as antimony. These plates are often malleable, ductile and low melting point. They are often used in various applications ranging from shielding ......
Hot rolled flat steel (GB 704–88)
Hot rolled flat steels (GB 704-88)
Hot rolled flat steel is one of the most common and widely used steel products, with applications in a wide variety of industries and applications including automotive components, construction, and shipbuilding. Hot rolled flat steel is produced in accordance wi......
Stalk chopping and returning machine jb51235-1999
Introduction
The jb51235-1999 is a tractor-mounted stalk cutter that is often used in the tilling of fields. This machine consists of a frame, a rotary cutter, an engine, and a transport wheel. The frame consists of a heavy-duty steel frame and provides a stable platform for the machine when it i......
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 ......
Malleable Iron Castings (Abstract) GB 9440-88
GB 9440-88 is a national standard issued by the Ministry of Industry and Information Technology of the Peoples Republic of China. It specifies technical requirements, test methods and inspection rules, conditions of supply and acceptance, and packaging, marking and quality certificate of cast iron......
GB 12348-90 Boundary Noise Standards for Industrial Enterprises
Noise Standards for Industrial Enterprises
The 12348-90 Noise Standard for Industrial Enterprises is an important national noise standard formulated by the Chinese government to guide the development of a safe, healthy and rational production environment for the industrial sector. It aims to ensu......
GB 13223-1996 Emission Standard of Air Pollutants for Thermal Power Plants
Atmospheric Pollution Standards for Thermal Power Plants GB 13223-1996
Thermal power plants generate electricity through the burning of coal and the burning of the coal releases pollutants into the atmosphere. China enacted the Atmospheric Pollution Standards for Thermal Power Plants GB 13223-199......
Evolution of GB/T 1220 Standard for Stainless Steel Bars
GB/T 1220 Standard Evolution of Stainless Steel Bars
The history of the development of a variety of industry standards and regulations, including those related to stainless steel bars (SSBs), began nearly two decades ago, when the standard of GB/T 1220 was initiated and announced in 1998. The sta......
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