Our perforated screen pipe can be widely used in petroleum production, chemical industry, sewage treatment, rock well filtration, geothermal Wells, purification water treatment and other industries. The pipe’s holes are arranged in parallel and spiral, the all holes are round, uniform, glossy and without burr. The hole size can be 5-30 mm. The perforated screen's material has J55, K55, N80, L80, stainless steel and carbon steel. The maximum outside diameter is 630 mm, and wall thickness is 2-20 mm. Our perforated casing screen pipe is not easy to deform with high strength, many customers are very interested in our perforated screen pipe.   https://www.nayushiye.com/products/well-screen-and-steel-casing/perforated-screen-pipe.html