Chelik darajasi: Q195–Q345, S235JR, S275JR, S355JR, GR.BD, STK500 standarti: GB/T3091–2001, BS1387–1985, DIN EN10025, EN10219, JIS G3444ST020, JIS G3444ST020/ 5 -2004 yil sirtini tugatish: issiq daldırma galvanizli, elektro galvanizli, qora, bo'yalgan, tishli, rozetka, o'yilgan. Tashqi diametri (...
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