美国采购需求：预镀锌方管、低碳钢方管、C型槽、矩形管、矩形钢管、方钢管每公斤价格

I am looking for detailed pricing information and the current availability of the product I mentioned. Could you please provide me with your best quotes and any bulk purchase discounts if applicable? Additionally, I'd like to know about the lead times for delivery once the order is confirmed. If there are any minimum order quantities or specific terms and conditions I should be aware of, please include that info as well. I'm keen to evaluate my options and would appreciate a prompt response so I can proceed accordingly. Thank you!