天津世纪海汇钢材：孟凡勇 13821980988 022-26634222 26634366（传真）网址:www.tjhaihui.com 16mn低合金管 22-28X2.5-4-6 16mn低合金管 32-38-40X3-4-6-8 16mn低合金管 42-48X3.5-4-5-8-10 16mn低合金管 51-60X3.5-5-6-7-9 16mn低合金管 76-89X4.5-6-8-10-12 16mn低合金管 108-133X5-6-8-10-12 16mn低合金管 159-168X7-8-10-14-18-26 16mn低合金管 194-219X6-8-12-20-26-38 16mn低合金管 245-273X10-12-14-16-22-15-40 16mn低合金管 325-355.6X11-14-16-20-30-40 16mn低合金管 377-426X11-14-16-20-25-40-45