Size: DN15~DN3000 Material of Rubber: NR, EPDM, NBR, NEOPRENE Single sphere expansion joint JGD-2 Size: DN15~DN3000Material of Rubber: NR, EPDM, NBR, NEOPRENEMaterial of Flange: Q235 Plastic Spray and Zinc electroplatingFlange Standard: DIN2576, ANSI, 150LB, BS4504, JIS Single sphere expansion joint JGD-2