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GB 12249-89 Steam trap sign
Steam Traps Symbols
Steam traps are components of plumbing systems designed to use steam energy to control the flow of liquids. In industrial settings, steam traps are important for controlling the release of condensate, water, and other liquids. A steam trap symbol is a visual identification mar......
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Hannah
JB/T4750-2003 "Pressure Vessels for Refrigeration Devices" is a recommended industry standard (replacing JB6917-1998)
Pressure Vessels for Refrigerating Apparatus
This industry standard JB/T4750—2003 replaces JB6917-1998 and provides instructions for design and assessment tests for safe performance of pressure vessels for refrigerating apparatus.
1. Scope
This standard applies to pressure vessels used in the ......
JGJ81-2002 Construction Steel Structure Welding Technical Regulations (Part 6)
Welding Technology Specification for Steel Structures in Building Construction of JGJ81-2002 (VI)
Welding is a commonly used technology in steel structure building construction. In order to promote the standardization of welding technology and reduce welding defects, the welding technology specif......
JGJ81-2002 Welding Technical Regulations for Architectural Steel Structures (Part 12)
JGJ81-2002 Building Steel Structure Welding Technology Specification (Twelfth)
Welding technology specification of the building steel structure (JGJ81-2002) is an important specification of the construction industry. It is applicable to the welding of steel structure. Its object is to set the lim......
Dimensions, shapes, weights and allowable deviations of cold-drawn round steel (abstract) GB 905-82
The GB 905-82 standard which outlines the specifications for cold drawn round steel covers the dimensions, shape, weight, and permissible deviation from the specified dimension and shape of cold drawn round steel products. The applicable materials are carbon steel products, alloy steel products, a......
Steel marking code (GB/T15575-1995)
Steel mark codes (GB/T15575-1995)
The steel mark code system (GB/T15575-1995), also known as “Steel Mark Identification and Classification” is a set of 22 characters that in China are used to identify and classify different steels. Each character has a corresponding meaning, and a specific orde......
Eddy current test method for titanium and titanium alloy pipes GB/T 12969.2-91
Abstract
This paper introduces GB／T 12969.2-91 Eddy Current Method for inspecting titanium and titanium alloy pipes. Eddy current method is an non destructive testing (NDT) technique for performing the inspection of titanium and titanium alloy pipes. The technique is an electromagnetic test whic......
General Vibration Standards - Assessment Standards Based on Bearing Vibration Amplitude
General Vibration Standard - Evaluation Standard According to Bearing Vibration Amplitude
Introduction
The vibration of bearings is an important factor when considering the operational status of a mechanical system. In order to properly evaluate the performance of a bearing, the vibration emit......
GB 5126-85 Eddy current testing method for aluminum and aluminum alloy cold-drawn thin-walled pipes
Abstract
This article introduces the detection of eddy current of cold-drawn thin-wall tube material made of aluminum and aluminum alloy according to the national standard GB 5126-85. This method of eddy current testing is a reliable, high-efficiency nondestructive testing technology, which is wi......
Steel bars for prestressed concrete (YB/T111-1997)
Abstract
This article introduces the technology of steel bars in pre-stressed concrete. It consists in three parts. The first part introduces the characteristics of steel bars in pre-stressed concrete, namely, the tensile strength, elastic modulus and so on. The second part gives the structure of......
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