高压锅炉合金无缝钢管\Φ38×5.5mm 12CrMoG GB 5310流体碳素无缝钢管\Φ33.7×3mm 20# GB/T8163结构碳素无缝钢管\Φ42×5mm 20# GB/T 8162流体不锈无缝钢管\Φ89×4mm 06Cr19Ni10 GB/T *****流体不锈无缝钢管\Φ219×4.5mm 06Cr19Ni10 GB/T *****流体碳素无缝钢管\Φ159×7mm 20# GB/T8163流体不锈无缝钢管\Φ89×6.5mm 022Cr17Ni12Mo2 GB/T *****镀锌焊接钢管\Φ26.8×2mm Q235B+Zn GB/T 3091碳素圆钢\Φ25mm 20# GB/T 699高压锅炉合金无缝钢管\Φ38×5mm 12CrMoG GB 5310流体不锈无缝钢管\Φ273×11mm 022Cr17Ni12Mo2 GB/T *****高压锅炉碳素无缝钢管\Φ42×4.5mm 20G GB5310流体不锈无缝钢管\Φ89×6mm 06Cr18Ni11Ti GB/T *****镀锌扁钢\-40×3mm Q235B+Zn GB/T 702镀锌焊接钢管\Φ26.8×2.75mm Q235B+Zn GB/T 3091