Rebar sleeves are widely used in steel bar connections in various concrete structures such as industrial and civil buildings, water conservancy, electric power, tunnels, bridges, etc. The products are of reliable quality in engineering applications.
The steel bar connector is an equal-strength joint whose strength is higher than the strength of the steel bar base material being connected. It is a new type of mechanical steel bar joint that combines high strength and speed. Its raw material is processed from seamless steel pipes.
The standards for steel pipe straight threaded steel bar sleeves are as follows:
1. Selection of threaded sleeve
1.1 Rebar connections are divided into two categories: lashing connections and mechanical connections or welding. Mechanical connections are preferred.
1.2 The connections of longitudinal stress-bearing bars in columns are all mechanically connected or welded.
1.3 All rebar connections when the diameter of the stressed rebar is d ≥ 22 shall be mechanically connected or welded.
2. The sleeve extrusion connection method is to insert the end of the required connected rebar (should be ribbed rebar) into a special steel sleeve, and use an extruder to compress the steel sleeve to cause it to plastically deform. The mechanical engagement and tightening force between the deformed steel sleeve and the ribbed rebar realizes the connection of the rebar. This connection method is generally used for grade II and grade III rebar (including waste heat treated rebar) with a diameter of 16 to 40 mm. The method of radial sleeve extrusion connection should comply with the requirements of "Technical Specifications for Ribbed Rebar Sleeve Extrusion Connection" (JGJ108-96).
