ASTM International

This is one of the largest voluntary standards development organizations in the world.
It was originally known as the American Society for Testing and Materials (ASTM).
This is a reputed scientific and technical organization that develops and publishes voluntary standards on the basis of materials, products, systems and services.
This is a trusted name for standards.
The standards covered by this organization covers various types of pipes, tubes and fittings, especially made of metal, for high-temperature service, ordinary use and special applications like fire protection.
The ASTM standards are published in 16 sections consisting of 67 volumes.

ASTM A961/A691M
Standard Specification for Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures

ASTM B61
Standard Specification for Steam or Valve Bronze Castings

ASTM F1030
Standard Practice for Selection of Valve Operators

ASTM F1802
Standard Test Method for Performance Testing of Excess Flow Valves

ASTM F1793
Standard Specification for Automatic Shut-Off Valves
(Also Known as Excess Flow Valves, EFV) for Air or Nitrogen Service

ASTM F1794
Standard Specification for hand-operated, globe-style valves for gas (except oxygen gas) and Hydraulic Systems