?? ?????? ????? 1- ???????

??? ???????: ?? ?????? ????? ????????

??????: SMLS ???????? ASTM A53 GR.B / API 5L GR.B (???? ??????? ????????) / ??????? ??? ?????? ASTM A197

?????: 1/2”-2” (16938 PCS pipes & 53916 PCS fittings);