Extreme size H1000*300 and H192×198 fill the empty in domestic market. With more optimized sectional area distribution and more reasonable strength to weight ratio, the beam products become high productive and efficient, and also characterized by strong bending resistance, simple construction, cost-saving and light structure weight, etc. Rizhao Steel can control the size tolerance to meet customer’s request for tunnel I-beam and this makes product delivery and application more beneficial to customers and markets.