成都市恒大玫德貿易有限公司專業銷售批發四川瑪鋼管件，包括（燃氣系(xi)統(tong)(tong)(tong)、消防(fang)系(xi)統(tong)(tong)(tong)、暖通(tong)系(xi)統(tong)(tong)(tong)、給水系(xi)統(tong)(tong)(tong)管件等），下面(mian)是燃氣系(xi)統(tong)(tong)(tong)寬邊異徑(jing)四(si)通(tong) 180R的規格尺寸介(jie)紹(shao)：