Pipe threads used in hydraulic circuits can be divided into two types: a) Jointing threads â are pipe threads for joints made pressure tight by sealing on the threads and are taper external and parallel or taper internal threads. The sealing effect is improved by using a jointing compound.
You can renew by mail using Form DS-82 if your most recent passport: 1  Is submitted with your application. 2  Is undamaged (other than normal wear and tear) 3  Was issued when you were age 16 or older.  Was issued within the last 15 years.
Step 1. Check the condition of your current passport. Complete the renewal process by mail if your current passport is undamaged, was issued on or after your 16th birthday, your legal name has not changed, or if you have a marriage certificate or issued court order verifying a legal name change. Step 2.