赞比亚采购需求：不锈钢焊条、不锈钢管、平焊法兰、镀锌管、聚氨酯防水涂料、不锈钢板

I'm looking for pricing information for high-pressure steel pipes that are rubber lined and feature flanged ends. Specifically, I'm interested in pipes with a diameter of 16 inches and a length of 6 meters. These pipes will be utilized for mine water conveyance under challenging conditions, with an operating pressure of 100 bars. The water has a density of 1100 kg/m³, is at a temperature of 20 degrees Celsius, and has a neutral pH level of 7. I require a total of 50 pieces of these pipes. Please provide your best price, availability, and lead time for delivery. If you have any recommendations on specifications or additional features that would enhance performance in this application, feel free to include those as well. Looking forward to your prompt response!