UNI EN 10226-3 : 2007

Foreword
1 Scope
2 Normative reference
3 Terms and definitions
4 Symbols
5 Design of gauges
  5.1 General
  5.2 Taper full form threaded plug gauges (gauges No. 1
      and No. 2)
  5.3 Parallel full form threaded ring gauge (gauge No. 3)
  5.4 Taper plain ring gauge (gauge No. 4)
  5.5 Taper modified thread form check plug gauge (gauge
      No. 5)
  5.6 Parallel modified thread form check ring gauge (gauge
      No. 6)
6 Use of gauges and checking of pipe threads
  6.1 General
  6.2 Checking of internal taper (Rc) and internal parallel
      (Rp) threads
  6.3 Checking of external taper (R) threads
7 Gauge dimensions and manufacturing tolerances, checking of
  new gauges and checking gauges for wear
  7.1 Gauge dimensions and manufacturing tolerances
  7.2 Checking of new gauges
  7.3 Checking gauges for wear
  7.4 Marking of gauges
Annex A (normative) Summary of gauges

Specifies a process using limit gauges, for the validation of taper internal and external threads and parallel internal threads on piping systems components and other products, the dimensions and tolerances of which are detailed in EN 10226-1 and prEN 10226-2.