Pipes are made from coiled steel that ensures a narrow range of chemical composition, low percentage of harmful impurities (sulfur, phosphorus) and inclusions, minimum difference in wall thickness in the final pipe.
. Use of different steel groups (including 09ГСФ, 09Г2С, 17Г1С, 08ГБЮ, 20) and full body heat treatment allows us to get the following grades:
- К42, К48, К50, К52, К54, К55, К56, К60 (GOST 20295-85, TU 14-3Р-26-99, TU 14-3Р-33-2005);
- L210/A, L245/B, L290-L485/X42-X70 PSL 1 (to API Spec 5L);
- L245M/BM, L290-L555M/X42M-X80M PSL 2 (to API Spec 5L)