... 168, 219 b) Square tube side length , mm : 10*10 , 12*12 , 15*15 , 18*18 , 19 * 19 , 20*10 , ... *20,10*24,11*24.5,13*22,12*23,12*24,15*25,15*30,10*33,15* ... :50 people d) Factory Size : 46,000 square meters)12) Trade & Marketa) North America b) South America c) ... , anti-wearing, good-appearance, excellent mechanical properties. thin wall welded stainless steel pipe weight for decoration price /weignt in ...