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GB 17926-1999 Compressed natural gas cylinder valves for vehicles
GB 17926-1999Road Vehicle Compressed Natural Gas Cylinder Valves
This standard applies to road vehicle compressed natural gas (CNG) cylinder valves (hereafter referred to as valves).These valves are used for the connection of CNG cylinder and the other components in CNG system.
The technical re......
1248 
Sophie
JGJ81-2002 Welding Technical Regulations for Architectural Steel Structures (Part 2)
Welding process is a method of joining two or more metal parts by using heat and pressure.Heat generated by electric arc, resistance or other process melts the two parts and fuses them together, and then applying pressure joins them together. Compared to other joining processes, welding is general......
JGJ81-2002 Construction steel structure welding technical specification (twenty-nine)
Steps for Welding Steel Structures According to JGJ 81-2002
Welding of steel structures is an important process in the construction and manufacturing industry. In the past, welding processes were largely undocumented and the industry relied on trial and error methods of welding that were often ti......
NF is the French standard
NF is the French Standard
France is a developed country with a rich history, culture, and economy. It also has a broad impact across the globe. A testament to this impact is NF, the French Standard, which has become internationally recognized.
But what is NF, and how has it become so influential......
Hot-rolled section steel for elevator guide rails (YB/T157-1999)
Hot Rolled Steel for Elevator Guide Rail
Steel is mainly used as a structural material in the manufacture of elevators, and hot rolled steel is one of the most commonly used materials. Hot rolled strip steel is required to conform to the quality and dimensions specified in national standards (YB......
Carbon dioxide shielded welding steel wire GB 8110-87
Carbon dioxide gas shielded welding (CO2 gas shielded welding) is a method of welding mainly conducted in an atmosphere of carbon dioxide gas, and is widely used in industry. It is one of the standard processes of automatic welding, and accounts for about 90% of the total world welding consumable ......
Gray cast iron pipe with flexible mechanical interface (GB/T6483-1986)
Introduction
Flexible mechanical interface grey mouth cast iron pipes are among the most popular pipe configurations used in modern applications. It is with this in mind that the Chinese industrial standard (GB/T6483-1986) was created to ensure quality assurance and improved operational performan......
Carburized bearing steel (GB 3203-82)
Carburized Steels (GB 3203-82)
Carburized steels, also known as carbonized steels, are steels that have been subjected to a process of carburization in order to increase their resistance to wear, corrosion and fatigue. Carburization is a process of chemical reaction that takes place at elevated t......
Summary of Standards for Pressure Test Pumps
提要
1. Introduction
This document outlines the recommended standards for testing pumps. Testing of pumps is needed to ensure that pumps are designed well and free from defects, and that they perform reliably during operation. It also ensures that pumps meet regulatory guidelines and safety requir......
Carbon structural steel and low alloy structural steel hot-rolled steel sheet and strip GB 912-89
Hot-rolled sheets and strips of carbon structural steel and low alloy structural steel are one of the important types of products in the steel industry. It is widely used in various industries such as construction, automobile, electromechanical, shipbuilding, petrochemical and military industry.
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