| Standards 40: European Committee for Standardization CEN/TC 69 - Published standards | Written by Anton |
| Standards 39: Threaded & Socket Welded Fittings - Pressure Classes and Schedules | Written by Anton |
| Standards 38: Steel Tubes according BS 1387 | Written by Anton |
| Standards 37: Steel Pipes Dimensions - ANSI Schedule 40 | Written by Anton |
| Standards 36: Steel Pipes Dimensions - ANSI Schedule 80 | Written by Anton |
| Standards 35: Steel Pipe Standardization Organizations | Written by Anton |
| Standards 34: Stainless Steels Classifications | Written by Anton |
| Standards 33: Stainless Steel Pipes - Comparing American and European Standards | Written by Anton |
| Standards 32: Stainless Steel - Comparing International Standards | Written by Anton |
| Standards 31: JIS - Pipe, Tube and Fittings Standards | Written by Anton |
