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National standard
Standardization
Standardization involves creating standards that help individuals agree on a common set of rules and measurements when sending and receiving data, documents, and goods. Standardization reduces inconsistencies in the way that these things are expressed and communicated. It also hel......
1040 
Molly
Alloy structural steel (GB 3077-88) (3)
1. Introduction
Alloy structural steel ( GB 3077-88) is a kind of alloy structural steel formulated by the State Economic and Trade commission. The standard includes the following grades of alloy structural steel: 15Cr, 20Cr, 30CrMnSiA, 35CrMnSiA, 20CrMnMo, 20CrMo, 30CrMo, 25CrMoV, 14CrMo, 20CrV,......
JGJ81-2002 Welding Technical Regulations for Building Steel Structures (Part 5)
，题目为 GB50205-2001建筑施工质量检验规程
GB50205-2001 Building Construction Quality Inspection Standard
Introduction
The GB50205-2001 Building Construction Quality Inspection Standard gives guidance for a thorough and professional approach to inspect the quality of construction for all new and e......
NS333 use
The USNS 333 is a cargo vessel used by the United States Navy. The ship was originally built by Avondale Shipyard in New Orleans and commissioned in 1961. The vessel was intended to be used as an auxiliary ship, primarily used to transport cargo and supplies to American personnel stationed oversea......
Corrosion-resistant alloy grade GBn 271-88
INTRODUCTION
GBn 271-88 is a type of corrosion resistant alloy that is designed to meet the requirements of a particular industrial application or process. It is used in areas where the properties of corrosion resistance and mechanical performance are paramount, such as power plants, seawater pro......
Copper and copper alloy electrodes GB 3670-83
Introduction
Copper and copper alloys welding rods are widely used in many fields due to their excellent electrical conductivity, ductility, high strength and excellent corrosion resistance. GB3670-83 is a national standard for copper and copper alloys welding rods. The standard requires that the......
Electric welded steel pipes for deep well pumps (YB/T4028-1991)
Deep well pump electrical welding steel pipe (YB/T4028-1991)
The deep well pump electrical welding steel pipe (YB/T4028-1991) is a type of steel piping specially designed for use with deep well pumps. The steel pipe is selected for its mechanical strength and dependability for use in such undergr......
Aluminum and aluminum alloy welded pipe GB 10571-89
GB 10571-89 Welded aluminium and alloys pipe
Welded aluminium and alloys pipe is a kind of metal pipe made by welding together longitudinal sections of aluminium or alloys. It is widely used in various fields such as ships, automobiles, aviation, chemicals, petrochemicals and so on. GB 10571-89 sp......
United Nations Development Program
UNDP: A Global Leader in Change
The United Nations Development Programme, commonly referred to as UNDP, stands as a leader in international development cooperation. Established in 1965, the agency has since grown to become one of the largest multilateral development agencies in the world, with a ......
Office of the United Nations High commissioner for Refugees
United Nations High commissioner for Refugees
The United Nations High commissioner for Refugees (UNHCR) is an international organization dedicated to protecting and assisting refugees and other displaced people. Established over sixty years ago as a response to the displacement of millions of p......
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