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Purpose of water-absorbing rubber hoses: Suitable for use in mines, agriculture, industry, and other sectors to absorb water and general neutral liquids at normal temperatures. Structure and properties: The rubber hose consists of an inner rubber layer, a fabric reinforcement layer, metal spiral wires, a middle rubber layer, and an outer rubber layer. The rubber hose has good rigidity; it does not flatten or delaminate when pumping liquids under vacuum, and can be bent at certain angles for use. Model: Type 1, with a vacuum level of 63 KPa and a discharge pressure of 0.3 MPa. Execution standard: GB1188-89. Specifications for water-absorbing rubber hoses: Inner diameter in mm, Hose length in mm, Working pressure in MPa – 0.3, 0.5, 0.7. Number of canvas layers: 1, 3, 20, 1.8, 1.0; 23, 16, 20, 1.8, 1.0; 23, 19, 20, 1.8, 1.0, 23, 4; 22, 20, 2.0, 1.0, 23, 4; 25, 20, 2.0, 1.0, 23, 4; 32, 20, 2.3, 1.2, 34, 5; 38, 20, 2.3, 1.2, 34, 5; 45, 20, 2.3, 1.2, 34, 5; 51, 20, 2.3, 1.5, 45, 6. Steam (heat-resistant) hoses: Suitable for transporting saturated steam or superheated water at temperatures below 150°C; not suitable for use in food processing processes such as steaming or boiling. Structure and properties: The rubber hose consists of an inner rubber layer, a fabric reinforcement layer, and an outer rubber layer. The inner rubber layer possesses high heat resistance and aging resistance. It is safe and reliable for use at working pressures not exceeding 0.4 MPa. Model: Type O, with a maximum operating pressure of 0.4 MPa, corresponding to 150°C. Execution standard: GB7548-87. Specifications and properties of steam (heat-resistant) rubber hoses: Inner diameter in mm, Hose length in m, Inner rubber thickness in mm, Outer rubber thickness in mm, Working pressure in MPa, Number of layers – 1: 3202.01.20.43-4; 2: 16202.01.20.43-4; 3: 19202.01.20.44-5; 4: 22202.01.20.44-5; 5: 25202.01.50.45-6; 6: 32202.31.50.45-6; 7: 38202.31.50.46-7; 8: 45202.31.50.46-7; 9: 51202.31.50.46-8. Oil transport rubber hoses: Suitable for transporting gasoline, kerosene, diesel, engine oil, and other mineral oils at normal temperatures. Structure and properties: The rubber hose consists of an inner rubber layer, a fabric reinforcement layer, and an outer rubber layer. Both the inner rubber layer and the outer rubber layer are made of oil-resistant rubber, offering excellent oil resistance and aging resistance; the tube body is lightweight and flexible. Execution standard: HG4-761-74. Specifications and Performance: Inner diameter size in mm, Tube length in mm, Outer rubber thickness >mm, Working pressure in MPa: 0.5, 0.7, 1.0. Number of canvas layers: 1, 3, 20, 1.8, 1.2, 23, 4; 16, 20, 1.8, 1.2, 23, 4; 19, 20, 2.0, 1.2, 23, 4, 5; 22, 20, 2.0, 1.2, 23, 4, 5; 25, 20, 2.0, 1.2, 23, 4, 5; 32, 20, 2.3, 1.5, 45, 6; 38, 20, 2.3, 1.5, 45, 6; 45, 20, 2.3, 1.5, 56, 7; 51, 20, 2.3, 1.5, 56, 7. Application: Suitable for use in mines, construction projects, industrial sectors, etc., to transport compressed air and inert gases at normal temperatures ranging from -20 to +45°C. Structure and properties: The rubber hose consists of an inner rubber layer, a fabric reinforcement layer, and an outer rubber layer. It features a soft tube body, good stiffness, excellent pressure resistance, safe and reliable use, as well as good aging resistance. Model grades: Type 1, grades A, B, C; Type 2, Grade C. Execution standard: GB1186-92. Specifications and performance of air rubber hoses: Inner diameter in mm, Length in mm, Outer rubber thickness in mm, Working pressure in MPa – 0.6, 0.8, 1.0. Number of canvas layers: 1, 3, 20, 1.8, 1.0; 34, 16, 20, 1.8, 1.0; 34, 19, 20, 1.8, 1.2; 34, 5; 22, 20, 2.0, 1.2; 34, 5; 25, 20, 2.0, 1.2; 34, 5; 32, 20, 2.3, 1.5; 45, 6; 38, 20, 2.3, 1.5; 45, 6; 45, 20, 2.3, 1.5; 56, 7; 51, 20, 2.3, 1.5; 56, 7. Rubber hoses for oxygen and acetylene: Suitable for welding and cutting in environments ranging from -20 to 45°C, and used for transporting oxygen and acetylene. Structure and properties: The rubber hose consists of an inner rubber layer, a winding reinforcement layer, and an outer rubber layer. The winding reinforcement layer is made of polyester ropes, which feature high compressive strength and good safety performance. Execution standard: Oxygen hose GB2550-92. Acetylene hose GB2551-92. Specifications and performance table for oxygen hoses: Nominal inner diameter in mm, Length in m, Inner rubber thickness > mm, Outer rubber thickness > mm, Working pressure in MPa – 6±0.5, 530±1%, 1.5, 1.2, 2.0; 8±0.6, 030, 1.5, 1.2, 2.0; 10±0.6, 030, 1.5, 1.2, 2.0; 13±0.65, 030, 1.5, 1.2, 2.0. Specifications and performance table for acetylene hoses: Nominal inner diameter in mm, Length in m, Inner rubber thickness > mm, Outer rubber thickness > mm, Working pressure in MPa – 6±0.5, 530±1%, 1.5, 1.2, 0.30; 8±0.6, 030, 1.5, 1.2, 0.30; 10±0.6, 030, 1.5, 1.2, 0.30