Daraja la Chuma: Q195–Q345,S235JR,GR.BD,STK500 Kawaida:GB/T3091–2001,BS1387–1985, DIN EN 10025,EN10219,JIS G3444:2004, ASTM A53 SCH51/ENST20, ASTM A53 SCH20/ENST40, ASTM A53 SCH205/2020 Uso Maliza:imetiwa mabati ya awali,iliyotiwa nyuzi,soketi,iliyochongwa, iliyopakwa rangi Kipenyo cha nje (inchi ):1/2''—4'' Nene...
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