菲律宾采购需求：镀锌钢管、热轧钢管、方钢管、矩形钢管、热轧方钢管、石油天然气管道

We're looking for a reliable supplier for black iron pipes under the Superior brand. Specifically, we're interested in Schedule 40 pipes with a standard length of 6 meters. We need both seamless and non-seamless options, covering a size range from 1/2 inch to 8 inches in diameter. Could you provide detailed pricing, availability, and any related specifications? We want to ensure the quality meets our standards and would appreciate insights on your production capabilities. Timely delivery is crucial for our operations, so please include lead times as well. Looking forward to your prompt response.