锥螺纹钢筋接头工艺标准)（Technical standard for taper thread steel joint）.docVIP

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锥螺纹钢筋接头工艺标准)（Technical standard for taper thread steel joint）.doc

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锥螺纹钢筋接头工艺标准)（Technical standard for taper thread steel joint）

锥螺纹钢筋接头工艺标准)（Technical standard for taper thread steel joint） Standard for taper thread joint of steel bar (417-1996) Range The process standard is applicable to the connection of the same diameter or different diameter steel bars of grade 16 and 40mm in the cast-in-place reinforced concrete structure of industrial and civil buildings. The difference between the diameters of the connecting bars is not more than 9mm. The use of tapered threaded steel connections shall be approved by the designer. Construction preparation 2.1 materials and main equipment: 2.1.1 reinforcement: the grade and diameter of the reinforcement must comply with the design requirements. There is a factory certificate and a re examination report. 2.1.2 The connecting sleeve shall meet the following requirements: 2.1.2.1 Marked with specifications (such as 32 or 32). 2.1.2.2 Sealed cover sealed with plastic cone. 2.1.2.3 The same diameter or diameter sleeve is in the range specified in table 4-25. Connecting sleeve specification size table 4-25 connecting sleeve specification mark outer diameter not less than (mm) length is not less than (mm) 16, 18, 16 25-0.5 65-0.5 18 28-0.5 75-0.5 20 30-0.5, 20 85-0.5, 22 32-0.5, 22 95-0.5 25 35-0.5 25 95-0.5 28 39-0.5, 28 105-0.5, 32 44-0.5, 32 115-0.5 36 48-0.5 36 125-0.5 40, 40 52-0.5 135-0.5 2.1.2.4 cone thread screw in the connecting sleeve, the connecting sleeve should be in the end edge of the notch range within the cone thread end (Figure 4-36). Figure 4-36 2.1.2.5 Have product qualification certificate. 2.1.2.6 The connecting sleeve shall be classified, packaged and stored, and shall not be mixed and rusted. 2.1.3 Main equipment: 2.1.3.1 steel wire binding machine: model SZ, 50A, or other sets of diameter of 16mm and above the second and third class rebar wire machine. 2.1.3.2: including tooth gauge gauge gage, calipers and taper thread plug gauge. A dental gauge is a gauge used to inspect the quality of taper thread shaping of the ends of reinforcing