美国采购需求：碳钢板供应商，购买碳钢板，碳钢板价格，碳钢板库存，碳钢板规格，建筑用碳钢板

We are looking to procure cold-rolled steel plates with a specific focus on certain grades that offer reliable strength and durability. The desired dimensions for these plates are 1500 mm by 3000 mm. It's essential that the material meets industry standards, ensuring optimal performance for our applications. Could you please provide the relevant specifications, pricing, and availability for the requested steel plates? Additionally, we would appreciate information on your lead times and any bulk order discounts you may offer. Looking forward to your prompt response. Thank you!