Cold-finished, electric-welded, finned tubes
“Sumy NPO” JSC has a great experience in tubulars manufacture and currently manufactures tubes by cold rolling; by welding of carbon steels, stainless steels and non-ferrous metals and bimetallic finned tubes, which are used for heatexchangers.
Cold-finished seamless tubes
| Tube diameter, mm | from 8 to 76 |
| Wall thickness, mm | from 1 to 10 |
| Tube length, m | to 23 |
| Material | different grades of steel, non-ferrous metals and alloys of normal, high and precision accuracy, in particular according to GOST: 8733; 9567; 21729; 9941; 550; 617; 17217; 21646; 494; 22897. API 5L. ТУ – 14-3-460; 14-3-251; 14-3-501-76. |
Electric-welded cold-finished corrosion-resistant steel tubes :
| Tube diameter, mm | from 8 to 76 /102 |
| Wall thickness, mm | from 1 to 3 |
| Tube length, m | up to 23 |
| Accuracy of manufacturing | normal, high and precision accuracy as to ТУ 27.2-8-66-2003 |
| Tube diameter, mm | 25 mm |
| Wall thickness, mm | 2,5 mm |
| Tube length, m | up to 12 m |