FIELD: production of tubes. SUBSTANCE: stack of five adhesive layers is formed from chemically- and abrasive-resistant rubber between bearing carcass and internal sealing layer, up to 5 mm thick. Adhesive layers are wound on sealing layer in the following sequence: layer of unwoven cloth unimpregnated with binder; layer of unwoven cloth impregnated with binder; double spiral layer of roving at winding angle of 52-72 deg to longitudinal axis of 0.5-1.2 mm thick; layer of impregnated unwoven cloth, and circular layer of roving 0.5 mm thick, maximum. Bearing carcass is made of two stacks, each including up to ten double spiral layers. Sealing layer includes insertion elements, namely, supporting rings made in the form of, for example, prepreg, consisting pf 3-5 layers of cloth positioned in succession inside layer and spaced at 0.5-2.0 m. Every supporting ring forms projection in sealing layer which cross-section is shaped as isosceles triangle or trapezium with rounded vertices. Connecting elements made simultaneously with winding of sealing layer and bearing carcass are formed at tube ends. Sealing layer is formed by winding of tape on mandrel preliminarily coated with layer of antiadhesive material. Tape is made of uncured chemical and abrasive-resistant rubber of 1 mm thick, and wound at spacing equal to tape width. Then the second layer of uncured rubber tape is wound with shift relative to the first layer by 0.5 of spacing. Then the third layer of uncured rubber is wound starting with opposite end face of mandrel. After the operation is performed supporting rings made of, for example, tape-prepreg consisting of 3-5 layers are installed from 0.5 to 2.0 m along tube length where 2-3 layers of uncured rubber are placed. Supporting rings are also installed at nipple end faces. Then stack of five adhesive layers is wound. In this case stack includes successive winding of one layer of tape unimpregnated with binder and made of low-density, for example, unwoven material; winding of layer of unwoven cloth impregnated with binder; winding of double spiral layer not more than 1.2 mm thick, made of glass or basalt roving at winding angle of 52-57 deg; winding of circular layer of roving not more than 0.5 mm thick, at roving tension force from 0.4 to 2.0 kg/mm of roving bundle. Then bearing carcass is formed by winding of stack up to ten double spiral layers of roving. Circular projection in the form of isosceles triangle with rounded vortex made of circular layers of roving is formed in zone of installation of every supporting ring. This done, connecting elements are formed at tube ends. EFFECT: enhanced strength and reliability of produced tube. 13 cl, 7 dwg
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