阿鲁巴采购需求：长焊颈法兰，供应商，价格，尺寸，材料，规格

I'm exploring options for bulk purchases of long weld neck flanges and would like to gather more information. Specifically, I'm interested in your product specifications, including material options, pressure ratings, sizes available, and any quality certifications your products might hold. Could you also share details about your production capabilities and Lead times for large orders? Additionally, it would be helpful to understand your pricing structure, including any discounts for larger quantities and the terms of payment. If you have any catalogs or datasheets, please attach them as well. I'm looking forward to your prompt response so we can discuss this potential collaboration further. Thanks!