南非采购需求：建筑材料、工业用品、金属制造

We are interested in sourcing Rocal pipes with specific dimensions for an upcoming project. The pipes need to have a diameter of 30mm and a thickness that aligns with standard specifications. Additionally, we're looking for a pipe that has a larger outer diameter of 300mm. A notable requirement is for the pipe to feature an opening of 400mm located at the top, rather than on the ends. Please provide us with your availability, pricing details, and lead time for these specifications. If you have any suggestions or alternatives that meet our criteria, we would appreciate your input. Looking forward to your prompt response so we can move forward with this procurement.