The standards for valves cover various aspects such as design, materials, manufacturing, testing, and application, and different countries and regions have developed their own standard systems. The following are the main standard descriptions for Chinese National Standard (GB), American Standard (American Standard), and Japanese Standard (Japanese Standard) valves.
Chinese National Standards (GB, GB)
The valve standards in China are issued by the National Standardization Administration, and the main valve standards include:
GB/T 12224- Technical Conditions for Steel Valves for General Purpose Valves
It covers the basic requirements, materials, manufacturing, inspection, and testing of steel valves.
GB/T 12234- Steel Gate Valves for Petroleum and Natural Gas Industries
It specifies the requirements for the design, materials, manufacturing, inspection, testing, and marking of steel gate valves used in the petroleum and natural gas industry.
GB/T 12235- Steel globe valves and lift check valves with flange and butt welding connections
The technical conditions for steel globe valves and lift check valves with flange and butt welding connections are specified in detail.
GB/T 12237- Steel ball valves with flange and butt welding connections
Design and manufacture of steel ball valves suitable for flange and butt welding connections.
GB/T 12238- General purpose valves - Butterfly valves with flange and clamp connections, open type
The technical requirements for universal butterfly valves have been specified.
American Standard (ASME/ANSI, American Standard)
The valve standards in the United States are published by the American Society of Mechanical Engineers (ASME) and the American National Standards Institute (ANSI). The main valve standards include:
ASME B16.34- Valves with flanged, threaded, and welded ends
It specifies the requirements for valve design, materials, manufacturing, inspection, testing, and labeling.
API 600- Steel Gate Valves
Steel gate valves suitable for the petroleum industry have specified requirements for design, materials, manufacturing, inspection, and testing.
API 602- Small Bore Forged Steel Gate and Globe Valves
Suitable for small diameter forged steel valves, its technical conditions are specified in detail.
API 603- Corrosion resistant steel gate valves for corrosive environments
It specifies the requirements for corrosion-resistant steel gate valves used in corrosive environments.
API 609- Butterfly valves with flange and clamp connections
This covers the technical requirements for butterfly valves with flange and clamp connections.
Japanese Standard (JIS, Japanese Standard)
The valve standards in Japan are developed by the Japanese Industrial Standards (JIS), and the main valve standards include:
JIS B2002- Valve Terminology
Basic terms and definitions for valves have been established.
JIS B2011- Cast Iron Gate Valves
The design, material, and manufacturing requirements for gate valves suitable for cast iron materials are specified.
JIS B2013- Cast Steel Gate Valves
The technical conditions for gate valves suitable for cast steel materials are specified in detail.
JIS B2071- Steel ball valves with flange and butt welding connections
Steel ball valves suitable for flange and butt welding connections have specified design and manufacturing requirements.
JIS B2081- Cast iron butterfly valves with flange connection
The technical requirements for cast iron butterfly valves with flange connections are specified.
Comparison of Main Standards
Design standards:
National and American standards have high design requirements, while Japanese standards tend to be simplified and applicable in design.
Material standards:
The three standards have detailed requirements for materials, but there may be certain differences in material types and selection.
Testing and Inspection:
The American standard is more rigorous and detailed in testing and inspection, especially in applications in the oil and gas industry.
Applicable scope:
The national standard covers a wide range of industrial applications, the American standard is widely used in the oil, natural gas, and chemical industries, and the Japanese standard is more common in the precision manufacturing and electronics industries.
Summary
The valve standards of different countries and regions have their own focuses, reflecting their respective industrial needs and technological development levels. When selecting and applying valves, products that meet corresponding standards should be selected based on specific usage environments and requirements to ensure their performance and reliability.