详细介绍:
42*3*3.5低合金6-8米无缝钢管2×3.5-4-5-6-7-8-9-10 180×32-34-38-40-45-50 580×10-14-16-20-30-40-50-70
45×3.5-4-5-6-7-8-9 194×6-8-12-16-20-25-30-40-45-50 600×10-14-18-25-20-30-50-60
48×3.5-4-5-6-7-8-9-10 203×6-7-10-15-20-25-30 610×10-14-18-25-20-30-50-60
51×3.5-4-5-6-7-8-9-10 203×32-36-40-45-50 620×14-20-30-35-45-50-60
56×3.5-4-5-6-7-8-9-10 219×6-8-12-16-18-20-25 630×10-20-30-40-55-75
57×3.5-5-6-7-8-9-10-12 219×30-40-45-50-55 640×12-25
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