Chelik darajasi: Q195–Q345, S235JR, GR.BD, STK500 Standart: GB/T3091–2001, BS1387–1985, DIN EN 10025, EN10219, JIS G3444: 2004, ASTM A53–0EN540D, ASTM A53–0EN540D Yuzaki ishlov berish: oldindan galvanizli, tishli, rozetka, o'yilgan, bo'yalgan Tashqi diametri (dyuym): 1/2 ''-4'' Qalinligi ...
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