... ,25mm,38mm,50mm,76mm >20 years professional manufactuer YIQUAN METAL PALL RINGMetal tower packing is made of material like carbon steel ... *76*0.820518306997.490*90*1.022911606297.1 The above data is reference to material stainless steel (AISI304) in the material ... , stainless steel including 304, 304L, 410,316, 316L. YIQUAN metal pall ring for petrochemical industry