巴基斯坦采购需求：锻造、自由模锻、自由模锻、钢材锻造、热锻、重型锻造

I'm currently in the market for a specific type of martensitic shaft. The required dimensions are 50 mm in diameter and a length of 20 feet. Additionally, I'm looking for a version that meets certain material specifications to ensure durability and performance under various conditions. Could you provide me with details on availability, pricing, and lead times for this shaft? I'm particularly interested in understanding your manufacturing capabilities and any related technical specifications that might apply to this request. Looking forward to your response.