... years and if not revised, either reapproved or withdrawn Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International ... selected changes to this specification since the last issue, A 984 /A 984M-02, that may impact the use of this specification (Approved September 10, 2003) (1) Revised Table ASTM International takes ... diameter measurements of pipe larger than NPS 20 shall be made with a diameter tape Outside diameter measurements, away from the ends, of pipe NPS 20 and smaller, shall be made with a snap gage, caliper,...