How are pressure pipelines classified, and what are the pipeline grade codes?
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This post was last edited by security on 2011-4-29 15:59. How are pressure pipes classified? What are the pipe grade codes?
First, search for the “Technical Regulations for the Design of Pressure Pipelines”. There are many posts on this issue.
Just look at the relevant specifications to find out. Learn* it.
Pressure pipelines are classified into industrial pipelines, utility pipelines, and long-distance transmission pipelines according to their uses. (1) Industrial pipelines that meet one of the following conditions are classified as GCl grade: 1. Pipelines that transport media with an extreme hazard level as specified in the current standard \"Classification of Hazards from Occupational Exposure to Toxic Substances\" GB5044； 2. Pipelines that transport flammable gases of Classes A and B or flammable liquids of Class A, as specified in the current **standards ‘Code for Fire Protection Design of Petrochemical Enterprises’ GB50160 and ‘Code for Fire Protection of Buildings’ GBJ16, and whose design pressure is ≥ 4.0 MPa ； 3. Pipelines for transporting flammable fluid media or toxic fluid media, with a design pressure of ≥4.0 MPa and a design temperature of ≥400°C ； 4. Pipelines that transport fluid media and have a design pressure of ≥ 10.0 MPa. (II) Industrial pipelines that meet one of the following conditions are classified as GC2 grade: 1. Those used to transport flammable gases of categories A or B, or flammable liquids of category A, as specified in the current standards \"Code for Fire Protection Design of Petrochemical Enterprises\" GB50160 and \"Code for Fire Protection of Buildings\" GBJ16, and with a design pressure
There is controversy over how liquid pipelines should be classified
Thank you for the repost from the 5th floor; it solved a big problem. Thanks a lot!
The poster is asking about the pipe grade code specified in the materials regulations, right?
I’ve learned it. I’m using GC2 here
Are pharmaceutical companies’ pipelines compliant with G3?
Pressure pipelines do not include the following types of pipelines: 1. Pipelines that are part of the equipment itself; 2. Pipelines in equipment, vehicles, and nuclear installations; 3. Pipelines that transport non-toxic, non-flammable, and non-corrosive gases, with a nominal diameter of less than 150 mm and a maximum operating pressure of less than 1.6 MPa(G); 4. Domestic gas pipelines located after the final valve before entry into the household, as well as heating pipelines located after the heating points (excluding the heating points themselves)