天津腾飞钢管常年供应：15CrMo GB9948-2006 16-20-25-45-50-60-89*4.5-6-8-9-10-10 15CrMo GB9948-2006 108*4.5-6-8-9-10-10-12 15CrMo GB9948-2006 159*6-8-9-10-10-12 15CrMo GB9948-2006 219*8-9-10-10-1-12-14 15CrMo GB9948-2006 273*8-9-10-11-12-14-15- 16-20-28 15CrMo GB9948-2006 325*8-9-10-11-12-14-15-16-20-25 15CrMo GB9948-2006 377*10-11-12-14-15-16-20-25 -40 15CrMo GB9948-2006 426*10-11-12-14-15- 16-20-25 -40 15CrMo GB9948-2006 457-508X14.2-17.5-22-45-52 15CrMo GB9948-2006 530-558.8X16.8-60-70 网址：http://www.beidougg.com 联系电话：022-26612680 传真：022-26621939 15900269817 祝经理 13821702388 李经理