短語(yǔ)詞組短語(yǔ)corrugated d steel tube 波紋鋼管spiral corrugated steel tube 螺旋槽鋼管stainless steel corrugated tube 不銹鋼波紋管multilayer stainless steel corrugated tube 多層不銹鋼波紋管 返回 corrugated steel tube