来源： 最后更新时间：2025-02-11 14:11:08 人气：109399

Variable diameter sleeve, which can change from 20 to 25, is made of round steel material used for making 25 sleeves. One end is made of 25 and the other end is made of 20. The material used for this sleeve is the material used for making 25 sleeves. Similarly, the external dimensions and materials of the variable diameter sleeve are calculated based on the large head.

Due to construction requirements, steel bars with a diameter of 36 and above need to be connected to steel bars with a diameter of 32, which requires a straight threaded connection sleeve with a diameter of 36 to 32 steel bars. Normally, the diameter change does not exceed two levels.

Variable diameter steel bar connection sleeves are suitable for connecting building steel bars of different diameters. Although the usage is small, it is essential. The sleeve for connecting variable diameter steel bars is generally specified to be within 3 sizes. For example, the 25 # building steel bar can be connected to the 32 # building steel bar through variable diameter connection, and can also be connected to the 28 # building steel bar, but cannot be connected to the 36 # building steel bar through variable diameter connection.

1. The steel sleeve is made of high-quality 45 carbon steel, with a reasonable design, advanced technology, high dimensional accuracy, and reliable connection quality.

2. The basic parameters of each specification of steel sleeve are designed according to the strength requirements of HRB400 grade steel bars, and are applicable to HRB335 and HRB400 grade steel plates.

3. The performance indicators have been tested by the National Construction Quality Supervision and Inspection Center and meet the requirements of "I" grade joints in JG/T 163-2013.

4. The specifications are matched with the diameter of the connected steel bars, and are divided into ten specifications: 14mm, 16mm, 18nn, 20mm, 22mm, 25mm, 28mm, 32mm, 36mm, and 40mm

。

Characteristics of variable diameter sleeve:

1. Suitable for the construction of steel bar connections in various reinforced concrete structures subjected to both tensile and compressive forces.

2. Easy to connect, fast, and easy to operate.

3. Easy and intuitive detection.

4. The processing of steel bars with straight threads can be prefabricated and produced in factories without taking up construction time.

5. Can connect HRB335, HRB400 grade same diameter and reduced diameter steel bars in horizontal, vertical, and diagonal directions.

Variable diameter sleeves can be widely used in reinforced concrete structural engineering in various industrial and civil buildings. Especially suitable for steel bar connections in high-rise buildings, roads, bridges, subways, tunnels, power stations, dams, and other buildings and structures with high requirements for explosion prevention and earthquake resistance. Suitable for the same or different diameter connection of HRB335 and HRB400 grade steel bars with a diameter of 16 to 40mm in beams, slabs, columns, and foundations in any part and direction, and can also be used as pre embedded joints for steel bars.

Specification and model of variable diameter steel bar connecting sleeve:

First level variable diameter specification

Φ18-Φ16  Φ20-Φ18  Φ22-Φ20  Φ28-Φ25  Φ25-Φ22 Φ32-Φ28 Φ36-Φ32 Φ40-Φ36 

Secondary variable diameter specification

Φ20-Φ16 Φ22-Φ18  Φ25-Φ20 Φ32-Φ25 Φ28-Φ22 Φ40-Φ32 Φ36-Φ28

Third level variable diameter specification

Φ25-Φ18 Φ28-Φ20  Φ36-Φ25  Φ40-Φ28 Φ32-Φ22

If the customer does not provide a definite type and specification of the sleeve, the customer should correctly explain their type, specification, and requirements, and sign the contract under the condition of mutual understanding between the supply and demand parties。

　1、The customer communicated the product type, specifications, and dimensions to our salesperson。

　2、Received customer specifications and dimensions, provided sleeve quotation (price list) for the customer。

　3、Specific agreement: delivery time, special requirements, and other matters。

　4、After placing the order and making payment, our company will arrange shipment as soon as possible。

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