排水用耐磕碰Q235朗讯3PE防腐钢管 ¥2270.00 耐划伤Q235工程用3PE防腐钢管 ¥2270.00 朗讯输水用Q235耐温3PE防腐钢管可折弯 ¥2270.00 石油用3PE耐划伤Q235朗讯防腐钢管可切割 ¥2270.00 Q235排水用耐温朗讯3PE防腐钢管可定制 ¥2270.00 排水用大口径Q235朗讯3PE防腐钢管 ¥2270.00