_RP_5B1-1999_add1-2004.pdf

Gauging and Inspection of Casing,Tubing,and Line Pipe Threads API RECOMMENDED PRACTICE 5B1FIFTH EDITION,OCTOBER 1999 Addendum 1September 2004 Addendum 1 to Gauging and Inspection of Casing,Tubing,and Line Pipe Threads 1 Page 30,add new paragraph 8.3.6:8.3.6Procedure for Thread Profile Gauge Use The Thread Profile Template is a precision-hardened and ground thread tooth form usedto check the product thread groove.Place the template in the perfect thread area.The template teeth should fit in the pin orbox threads without lateral movement or interference(ride-up on flank threads).Such indi-cations of imperfect fit may indicate a problem in the thread form.Rejection of the threadshould not be made until the thread pitch,taper,thread height,flank angle and/or thread pro-file as measured with a thread comparator or other thread form measurement device has ver-ified the condition.Page 48,add new Figure 63 shown on the following page:2API R ECOMMENDED P RACTICE 5B1A DDENDUM 1 Figure 63Thread Profile Gauge 09/04 Additional copies are available through Global EngineeringDocuments at(800)854-7179 or(303)397-7956Information about API Publications,Programs and Services is avail-able on the World Wide Web at:http:/www.api.org Product No.G05B1A1