... treatment plant, waterworks, gardens, municipal roads, airports and wharfs. 2) Carbon steel’s size is in front of the bracket in ... : mainly four kinds as 1000mm,1200mm,1500mm,2000mm. 5) Steel tube's size: subject to the design drawings confirmed by both ... .1)33.5(38.1)26.8(32.0) low carbon steel tube ball joint railing