雙壁纖(xian)維網鋼骨(gu)架(jia)復合管以聚(ju)乙烯（PE）樹(shu)脂為原材料，采用(yong)(yong)(yong)雙層(ceng)(ceng)共擠(ji)工(gong)藝(yi)成(cheng)型(xing)為內壁藍色(se)、外壁黑色(se)的(de)內層(ceng)(ceng)“凹”形(xing)中空板帶，用(yong)(yong)(yong)鍍鋅鋼帶軋制成(cheng)型(xing)為“Ω”形(xing)的(de)鋼骨(gu)架(jia)機械卡扣(kou)在“凹”形(xing)中空板帶中作為主要支撐結構，外壁用(yong)(yong)(yong)纖(xian)維網（玄武巖纖(xian)維或玻璃纖(xian)維）增強的(de)復合聚(ju)乙烯層(ceng)(ceng)，使用(yong)(yong)(yong)纏繞成(cheng)型(xing)工(gong)藝(yi)，加工(gong)制成(cheng)內壁平直光滑、外壁呈螺旋波(bo)紋狀的(de)雙壁纖(xian)維網鋼骨(gu)架(jia)復合管（簡(jian)稱“DFSP”管道）。