... square pipes GRADE: TP304, TP304L, TP316L, TP321, TP310S W. T: SCH5S, SCH10S, SCH40S, SCH80S. We are the manufactory of stainless steel seamless pipes ... We could offer:TYPEaustenite and austenite-ferritic stainless steel pipes & tubesGRDES304, 304L, 316L, 321, 310S, EN1 ... 1/8" 10S ~ 16" 80SProducing machinesRolling machines, Cold-drawn machines, annealing Furnace, Pickling sinks, Cutting machines, End ...