天津世纪海汇钢材：孟凡勇 13821980988 022-26634222 26634366（传真）网址:www.tjhaihui.com 20G 22X3.5 7750 20G 22X4 7750 20G 22X4.5 7750 20G 22X5 7950 20G 22X5.5 8050 20G 25X1 9700 20G 25X1.5 8700 20G 25X2 7500 20G 25X2.5 7500 20G 25X3 7500 20G 25X3.5 7500 20G 25X4 7500 20G 25X4.5 7700 20G 25X5 7700 20G 25X5.5 7700 20G 27X1.5 8200 20G 27X2 7700 20G 27X2.5 7300 20G 27X3 7300 20G 27X3.5 7300 20G 27X4 7300 20G 27X4.5 7300 20G 27X5 7300 20G 27X5.5 7300 20G 32X2 7000 20g高压锅炉管20g高压锅炉管20g高压锅炉管20g高压锅炉管20g高压锅炉管