美国采购需求：钢材、钢管、空心型材、ERW钢管、镀锌管、黑圆管

I'm interested in your product offerings and would like to request detailed information regarding your pricing structure. Specifically, it would be great to know about any minimum order quantities, bulk discounts, and lead times for delivery. Additionally, if you could provide insights into your product specifications and any available customization options, that would be really helpful. I'm looking forward to exploring potential partnership opportunities with your company. Thanks!