Higher Strength Cold Pressed Rebar Coupler For High Grade Rebars With Raw Material 20# Steel Or 16Mn Raw Material

Product introduction:Cold pressing couplers for higher strength rebars need with good raw material 16Mn or 20# carbon steel, this coupler is higher strength cold pressed couplers with easy connections. The workers only need to trained with easy steps to learn how to operate the machine and also how to pressed the couplers and check the pressing quality of couplers.Product details:Name:Rebar Pressed CouplerUsed   for Rebar:HRB400-HRB500 and other   equivalent strength rebarsRaw   Material:20#  16MnSize:16mm/18mm/20mm/25mm/28mm/32mm/36mm/40mmPacking:By bags and pallets   packing, or wooden case packing as required (25KG smaller packing, 1700KG per   pallet)Sample:Free existing samples   for checking dimension and qualityProduction   time:15-40 days based on   different quantity after receive the prepaymentShipping   Port:Xingang, Tianjin   Port,  Shanghai Port, China.Payment   Terms:TT / LCCertificate:ISO/ CECoupler   Size (mm)Out   Diameter (mm)Length   (mm)Weight   (kg)16mm301100.33918mm341100.38020mm361200.50422mm401320.66025mm451501.03628mm501681.39032mm561922.00436mm632162.83040mm702404.1231.IntroductionPressing technology is mechanical splicing system designed for the connection of bar ends without threading; the two rebar ends are putting into the coupler each sizes half of coupler length and pressing it by the special pressing mould with pressing machine. After pressing of the coupler to make it connect tighten with the rebar inside of it.  These mechanical connections mainly used in the repaired working site which some rebars are leaving outside of the projects without threading or some normal project sides which they do not want to do threading with rebar.  It can meet with China standard of JGJ107-2010, UK standard of BS8110, USA standard of ACI318, VN standard of TCVN8163 and other international standards.2.Features and advantagesa.For repair or retrofit worksb.Fit any cold shear cut bar end.c.No threading at ends and no reduction of the cross section Ares of the bar.3.Working  instructionsa. Normal condition(1). First, put proper height wooden block under the steel bar that going to be connect, then paint rebar locator line on the rebar end, the length should be as half of the coupler length. Paint the check mark which should be 10mm(coupler length less than 200mm) to 15mm(coupler length larger than 200mm) longer than the rebar locator line. Below Drawing (Drawing 1.):                                                                      Drawing 1⑵. Put the rebar into the pressed coupler, the coupler should alien with the rebar locator line. Make sure the pressed line of coupler upwards which will be easy to extrusion by extrusion die. See Drawing 2:                                                                      Drawing 2⑶. Put the pressing die back to make the clamps open, move the clamp near to the pressing coupler, put the pressing coupler into the clamp, and make sure the pressing die center aims at the coupler pressing line. See drawing 3.                                                                       Drawing 3⑷ Extrusion Sequence:Cold pressing from the middle of the coupler, first press the 2nd line, and then 3rd… After the end line has been pressed, then press the 1st line. Then take out of the wrench. See drawing 4:                                                                     Drawing 4 ⑸ Put another rebar into the other side of coupler see drawing 5, the extrusion pressing sequence is same as Drawing 4.                                                              Drawing 5b. Construction Site Operation- Vertical or Oblique cold Extrusion Operation:(1). For Vertical coupler connection still needs to paint the rebar locator line in order to check whether the vertical bars are put in to the coupler with correct length. See drawing 6.(2). Put the half finished pressing coupler and rebar onto the vertical rebar ends that going to be connected (to the rebar locator line on the vertical bars). See drawing 7.                     Drawing 6                                                                 Drawing 7 (3). Fixed the bottom steel bar, hanging the Chain hoist and then hanging the extrusion clamp, unload of pattern die(mother mold) and put the extrusion clamp onto the coupler and then install the pattern die(mother mold). Pulling hoist chain to adjust the height of extrusion clamp, and then press the coupler by correct order(4). When stop operation or get off work, the clamps should be put down in safe place in case the damage to clamp and pipes.a.Raw materialCouplers are produced by the raw material of 16Mn, Special raw material for cold pressing couplers which can keep pressing without crack and also keep the enough strength for rebar mechanical connection requirement.C :0.13～0.19 Si :0.20～0.60 Mn :1.20～1.60 Cr≤0.30 P≤0.030 S≤0.030 Ni≤0.30 Cu≤0.25Mechanical Properties: Yield strength≥ 315MPa, Tensile Strength: ≥470MPab.Picturesc.Coupler Tensile strength comparison with common Splicing standards for Main sizes of 16mm, 20mm, 25mm, 32mm, and 40mm.Size1620253240OD (mm)3036455670Thread larger Dia (mm)20.0024.0030.2038.0046.00Coupler Cross section area (mm2)392.69565.47874.091328.852186.4816Mn Min Tensile Strength  (N/mm2)470470470470470Coupler Load (KN)184.56265.77410.82624.561027.65Rebar cross-section area (mm2)201.1314.2490.9804.21257BS 8110    3.12.8.16.2 108% Fy, with 500 rebar load(KN)108.59169.67265.09434.27678.78ACI318 12.14.3.4 125%Fy(Type 1) with 500   rebar load(KN)125.69196.38306.81502.63785.63Coupler Load(KN) with BS 8110, ACI 318   requirement RemarkAboveaboveaboveaboveabove