专业159*6mm的20#无缝钢管厂家|168*8mm的无缝钢管价格

140×5-6-7-8-9-10-12-14-16-20-22

146×4.5-6-8-12-14-16-18-20-25-30

152×4.5-6-8-12-14-16-18-20-25-30

159×4.5-6-10-12-14

159×16-18-20-22-25-30

168×8-10-12-14-20-25-30-35

180×8-12-16-25-30

180×32-34-38-40-45-50

194×6-8-12-16-20-25-30-40-45-50

203×6-7-10-15-20-25-30

203×32-36-40-45-50

219×6-8-12-16-18-20-25