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(kuo)（燃(ran)氣系(xi)(xi)(xi)統(tong)、消(xiao)防系(xi)(xi)(xi)統(tong)、暖通系(xi)(xi)(xi)統(tong)、給水系(xi)(xi)(xi)統(tong)管件(jian)等），下面(mian)是(shi)燃(ran)氣系(xi)(xi)(xi)統(tong)彎管的規格尺寸(cun)介紹(shao)：