14 National Standards for Steel Pipe Flanges Released and Implemented

The standards of GB/T 9112-GB/T 9124 "Steel Pipe Flanges" and GB/T 13402-2010 "Large-Diameter Steel Pipe Flanges" revised by Zhejiang Chaoda Valve Co., Ltd. and China Machine Productivity Promotion Center Released in January 2011 and implemented in October 2011. The steel pipe flange is the most basic part that connects pipelines and various fluid devices including valves. The steel pipe flange is an important basic standard and is widely used in petroleum, chemical, metallurgy, electric power, urban construction and other nationals. Various areas of the economy. The series of standards has been revised since 2007, and the workload is huge. After several years of work, it has finally been completed.

The list of standards is as follows:

GB/T 9112-2010 "Steel Pipe Flange Types and Parameters"

GB/T 9113-2010 "Integral Steel Pipe Flange"

GB/T 9114-2010 "Flanged steel pipe flange with neck"

GB/T 9115-2010 "butt welding steel pipe flange"

GB/T 9116-2010 "Flange-welded steel pipe flanges"

GB/T 9117-2010 "Neck socket welding steel pipe flange"

GB/T 9118-2010 "Soldering Ring with Neck Loose Steel Pipe Flange"

GB/T 9119-2010 "Flat Flat Welded Steel Pipe Flange"

GB/T 9120-2010 "butt ring plate loose tube steel flange"

GB/T 9121-2010 "Flat Welded Ring Type Loose Steel Pipe Flange"

GB/T 9122-2010 "Flanged Ring Plate Type Loose Steel Pipe Flange"

GB/T 9123-2010 "Steel pipe flange cover"

GB/T 9124-2010 "Technical conditions for steel pipe flanges"

GB/T 13402-2010 "Large-diameter steel pipe flanges"