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Steel reinforcing coupler

What is a one touch coupler?

OK! Coupler was designed to make a worker insert a steel bar into it and press it alone and easily to be fastened and at the same time, secures the best structural performance as the smart function because the weakness of the existing mechanical couplers were innovatively remedied.

The existing mechanical couplers are fastened to steel rebars as ribs are locked into grooves of the locks when they are inserted into them. So, it is hard to expect comprehensive tensile force because it is difficult to solve the diversity of width, height, and pitch of ribs which are different depending on steel bar makers. Smart Coupler can secure tensile force by fastening all kinds of steel bars by country and product including Bamboo Type and Fish Born Type as a steel bar presses and clutches the central part (30) of the holder being inserted into it and many joints (21) clutch its body as well as its ribs with sharp teeth (21).

One Touch Coupler Specifications

Product name D35 D32 D29 D25 D22 D19 D16 D13
External diameter (mm) 69 63 59 52 47 41 36 30
Internal diameter (mm) 40 36 32.5 29 26 22.5 18.2 16
Length (mm) 160 150 140 130 120 110 100 90
Weight (kg) 2.5 2.0 1.6 1.2 0.9 0.6 0.46 0.28
Tensile strength N/㎟ 687 765 752 763 756 769 772 643

What is a screw coupler?

Screw Coupler is called a coupler for connecting steel bar screws (Rolling processing coupler) and was developed to be used in buildings that require lateral force such as general building structures, especially, skyscrapers and high bridge piers.
The steel bar joint method mechanically fastens steel bars (Hereafter, deformed bars) defined in KSD 0249 (Steel bar for reinforced concreate, Joint standard reinforced concrete beams) with couplers with processed female screws after rolling and processing and then rolling or threaded processing.
The coupler joint connection was optimized for earthquake resistance and wind resistance by reinforcing lateral force of steel bar joints of skyscrapers or high bridge piers and was designed to reinforce joints fully.
This mechanical steel bar joint method is used the most now.

Screw Coupler Specifications

Product name Standard (mm) External diameter (mm) Internal diameter length(mm) Thickness (t) Screw type Screw height (h) Internal diameter size (mm)
OK D13 D13 19 13 30 3.5   1.624 11.376
OK D16 D16 23 15 38 4   2.166 13.834
OK D19 D19 28 19 45 5   2.166 17.334
OK D22 D22 34 22 50 6   2.706 20.094
OK D25 D25 38 25 58 7 Double 2P screw 3.248 22.952
OK D29 D29 43 28 65 7.5 Double 2P screw 3.788 26.012
OK D32 D32 48 31 70 8.5 Double 2P screw 3.788 29.112
OK D35 D35 53 35 75 9 Double 2P screw 4.33 31.67
OK D38 D38 57 38 80 9.5 Double 2P screw 4.33 34.87
OK D41 D41 60 41 86 9.5 Double 2P screw 4.33 37.67
OK D51 D51 75 51 110 12 Double 2P screw 4.33 47.67

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