... Test,Hardness Test,Impact Test,Flaring Test,Corrosion Test,stainless steel 201 tubesAvailable pipes & tubesStyle (Round / Oval ... stainless steel: grade: AISI 201, 202, 301,304, 304L, 316.etc. 2)Applied field: construction upholstery, and industry instruments (fencing, railing ... ,safe doors / windows, gate fittings, inside staircases, balcony balustrades,furniture, sanitary ...