美国采购需求：镀锌钢卷、彩涂钢卷、彩涂钢卷、H型钢、钢筋、角钢

I'm looking to source black steel pipes and would appreciate your feedback on availability and pricing. Specifically, I need a certain size and length of schedule 40 black steel pipes. For one item, I'm interested in a 1-inch diameter with a total length of 200 feet. For another item, I'm looking for a 2-inch diameter pipe that measures 42 feet in length. Please let me know if you have these items in stock, along with the pricing options and lead times for delivery. Additionally, if there are any minimum order requirements or bulk purchase discounts, I'd love to hear about those as well. Your prompt response will be greatly appreciated as I'm looking to move forward quickly.