机械加工管07-12-17http://www.lcscgc.com/gang/36.htm
地质、船舶用管07-12-17http://www.lcscgc.com/gang/33.htm
方矩管07-12-17http://www.lcscgc.com/gang/32.htm
合金板07-12-17http://www.lcscgc.com/gang/31.htm
石油套管07-12-17http://www.lcscgc.com/gang/30.htm
