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Fully-buried Bellows 1.CE &ISO CERTIFACATE 2.20 years export experience 3.can be used for water supply ,chemical industry. Fully-buried Bellows connection sizes: Nominal diameter(mm)typecompensation length(mm)toughness(N/mm)Active area(cm2)Maximum diameter (B)(mm)The size of connection end (Φ×s)protective casing externial size(D1) (mm)Total length(L)mmAxialX.HorizonalY.angularθ./ ...