Cr系合结钢Φ25-13040Cr新兴铸管3800↑20热轧;Cr系合结钢Φ131-18040Cr新兴铸管3900↑20热轧;Cr系合结钢Φ181-20040Cr新兴铸管3920↑20热轧;Cr系合结钢Φ20-9040Cr华菱湘钢3830↑20热轧;Cr系合结钢Φ95-13040Cr华菱湘钢3880↑20热轧;Cr系合结钢Φ135-17040Cr华菱湘钢3910↑20热轧;Cr系合结钢Φ175-22040Cr华菱湘钢3960↑20热轧;