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· 2016-09-22 · Electrically welded steel tubes with a straight seam GOST 10704-91, 10705-80 Tpy6bl L,13r0TaanMBâ10TCq craw C COCTaBOM B COOTBeTCTBb1L4 c rocT 380-2005, rocT 14637-89,
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