... (Maximum) C - 0.20%, Si - 0.03%, MN - 0.67%, P - 0.045%, S - 0.045%, AL - Min. 0.02%.:b ... welded pipe)& white tube(galvanized steel pipe)-Tianjin Rongxin Steel Co.,ltd.,locating steel basic-Daqiuzhuang Town,Tianjin City,ChinaCONTACT USMr.Song ...