20#3PE防腐钢管-GB81633PE防腐钢管现货规格
20#3PE防腐钢管-GB81633PE防腐钢管现货规格 168X18 4050
20#3PE防腐钢管-GB81633PE防腐钢管现货规格 168X20 4150
20#3PE防腐钢管-GB81633PE防腐钢管现货规格 180X25 4150
20#3PE防腐钢管-GB81633PE防腐钢管现货规格 180X30 4150
20#3PE防腐钢管-GB81633PE防腐钢管现货规格 194X25 4650
20#3PE防腐钢管-GB81633PE防腐钢管现货规格 194X30 4650