Cr系合结钢Φ25-13040Cr新兴铸管4270↓20热轧;Cr系合结钢Φ131-18040Cr新兴铸管4370↓20热轧;Cr系合结钢Φ181-20040Cr新兴铸管4390↓20热轧;Cr系合结钢Φ20-9040Cr华菱湘钢4290↓20热轧;Cr系合结钢Φ95-13040Cr华菱湘钢4340↓20热轧;Cr系合结钢Φ135-17040Cr华菱湘钢4370↓20热轧;Cr系合结钢Φ175-22040Cr华菱湘钢4420↓20热轧;