Pipe Pressure Ratings
Pipe Pressure Ratings The components of pressure pipelines are generally standard parts; therefore, the design of pipeline components mainly involves the selection of these standard parts. Determining the pipeline pressure rating is essentially determining the rating of its standard parts. The pressure rating of a pipeline consists of two parts: The nominal pressure rating of standard pipe fittings expressed in [...]
Welding of low-temperature steel pipes (A333-6) in LPG projects
Welding of low-temperature steel pipes (A333-6) in LPG projects In liquefied projects, pipelines generally use low-temperature pipes (A333-6). The process for welding this material is complex, and there is limited experience with welding these steel pipes domestically. To ensure the quality of welding for this material, we need to select welding materials based on its characteristics, establish welding procedures, and [...]
Classification of Pipeline Levels
Classification of Pipeline Levels 1. Overview In current Chinese regulations, industrial pipeline classifications can be divided into two systems. One is the classification system for pressure pipelines, involving regulations such as the Safety Technical Supervision Regulations for Pressure Pipelines – Industrial Pipelines TSG D0001-2009 and the Rules for Licensing Design of Pressure Vessels and Pressure Pipelines TSG R1001-2008. The other [...]
Design Points of Cryogenic Pipelines
Design Points of Cryogenic Pipelines Abstract: In petrochemical enterprises, cryogenic pipelines are frequently used. Generally speaking, pipelines conveying materials below +5°C are referred to as cryogenic pipelines. However, in practice, low-carbon steel can be normally used within the range of +5°C to -20°C, as the steel is mainly in a ductile state under these conditions. When the temperature drops below [...]
Low Temperature Pressure Vessels
Low Temperature Pressure Vessels Currently, there are no specific standards for low temperature pressure vessels in our country. JB4732 does not differentiate between low temperature and normal temperature boundaries. ★ For low temperature shell-and-tube heat exchangers, see Appendix A of GB151-1999. ★ For low temperature pressure vessels, see Appendix E of GB150.3-2011 (in the old version GB150 it was Appendix [...]
Tubing Definition and Knowledge
Tubing Definition and Knowledge Tubing is a hollow section with no welds from end to end. Steel pipes, which have hollow sections, are extensively used for conveying fluids such as oil, natural gas, gas, water, and certain solid materials. Compared to solid steel bars like round steel, steel pipes with the same bending and torsional strength are lighter in weight, [...]