Cr系合结钢Φ20-7040Cr湘钢3980-热轧;Cr系合结钢Φ75-95 40Cr湘钢3980-热轧;Cr系合结钢Φ100-130 40Cr湘钢4030-热轧;Cr系合结钢Φ135-15040Cr湘钢4060-热轧;Cr系合结钢Φ160-17040Cr湘钢4060-热轧;Cr系合结钢Φ180-20040Cr湘钢4060-热轧;Cr系合结钢Φ210-22040Cr湘钢4060-热轧;