 
      The European norm UNI 7683-7684 specifies the requirements for unalloyed carbon steel welded round galvanised tubes with tapered gas thread. The tubes are intended for ducting of cables in explosion-proof electrical installations (AD-PE).
 
                                  | 
                  Manufacturing process:
                 | Longitudinal welding | 
| 
                  Steel:
                 | Fe360 | 
| 
                  End finishings:
                 | Tapered gas thread as per UNI 6125 with socket as per UNI 7684 or American NPT thread | 
| 
                  Size range:
                 | From Ø 1⁄2” (21.3 mm) to Ø 4” (114.3 mm) | 
| 
                  Manufacturing thicknesses:
                 | Standard as per the table | 
| 
                  Surface finishings:
                 | Hot-dip galvanized as per EN 10240 | 
| 
                  Standard length:
                 | 6000 mm | 
| 
                  Quality controls:
                 | Electromagnetic Non Destructive Testing (Eddy Current) as per EN 108931 Tensile test Bending test | 
| 
                  Standard marking:
                 | Marked with blue ink as per norm requirements | 
| 
                  Documents:
                 | Certificate of conformity 2.2 as per the EN 10204 norm. 3.1B certificate on request | 
 
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