BSPTr Threads can provide pressure tight seal on threads without use of a sealing compound. They are used in pipe assemblies where pressure tight joint is required on threads, without use of sealing compound.
Two Types of Gauges are recommended System A & System B.
Specification:
BS 21 – 1985 Indian Standard: Basic Dimensions: IS 554 : 1999 & Gauging Practice: IS 8999 : 2003.
Manufacturing Range :
Taper Thread Plugs & Rings for Pipe sizes 1/16″ to 6″ in both System A & System B Design.