JG/T 163-2013 English PDF (JG/T163-2013)

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JG/T 163-2013: Couplers for rebar mechanical splicing
JG/T 163-2013
CONSTRUCTION INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 93.020
P 25
Replacing JG 163-2004, JG 171-2005
Couplers for Rebar Mechanical Splicing
ISSUED ON: APRIL 27, 2013
IMPLEMENTED ON: OCTOBER 1, 2013
Issued by: Ministry of Housing and Urban-Rural Development of the
People’s Republic of China
Table of Contents
Foreword ... 3 
1 Scope ... 6 
2 Normative References ... 6 
3 Terms and Definitions ... 7 
4 Classification, Type and Marking ... 9 
5 Requirements ... 13 
6 Test Methods ... 18 
7 Inspection Rules ... 21 
8 Marking, Packaging, Transportation and Storage ... 26 
Appendix A (normative) Table of Minimum Dimension Parameters of Parallel
Threaded Couplers for Rebar Mechanical Splicing ... 29 
Appendix B (normative) Test Methods of Test Piece of Splice ... 31 
Appendix C (normative) Type Inspection Report of Test Piece of Splice ... 37 
Appendix D (informative) Format of Product Certificate of Couplers for Rebar
Mechanical Splicing ... 43 
Appendix E (informative) Format of Quality Certificate of Couplers for Rebar
Mechanical Splicing ... 44 
Couplers for Rebar Mechanical Splicing
1 Scope
This Standard stipulates the terms, definitions, classification, types and marking,
requirements, test methods, inspection rules, mark, packaging, transportation and
storage of couplers for rebar mechanical splicing.
This Standard is applicable to parallel threaded coupler, taper threaded coupler and
coupler for squeezing sleeve splicing of rebars for rebar mechanical splicing in
concrete structure. The couplers described in this Standard are applicable to the
splicing of all types of rebars with the diameter of 12 mm ~ 50 mm, which comply with
the stipulations in GB 1499.2 and GB 13014. Couplers for the splicing of plain round
rebars, stainless steel rebars and foreign rebars may take this Standard as a reference.
2 Normative References
The following documents are indispensable to the application of this document. In
terms of references with a specified date, only versions with a specified date are
applicable to this document. In terms of references without a specified date, the latest
version (including all the modifications) is applicable to this document.
GB/T 197 General Purpose Metric Screw Threads - Tolerances
GB/T 228.1 Metallic Materials - Tensile Testing - Part 1: Method of Test at Room
Temperature
GB/T 230.1 Metallic Materials - Rockwell Hardness Test - Part 1: Test Method (scales
A, B, C, D, E, F, G, H, K, N, T)
GB/T 699 Quality Carbon Structural Steels
GB/T 700 Carbon Structural Steels
GB/T 702 Hot-rolled Steel Bars - Dimensions, Shape, Weight and Tolerances
GB 1499.2 Steel for the Reinforcement of Concrete - Part 2: Hot Rolled Ribbed Bars
GB/T 2975 Steel and Steel Products - Location and Preparation of Samples and Test
Pieces for Mechanical Testing
GB/T 3639 Seamless Cold-drawn or Cold-rolled Steel Tubes for Precision Applications
GB/T 8162 Seamless Steel Tubes for Structural Purposes
GB/T 9174 General Specification for Transport Packages of General Cargo
GB 13014 Quenching and Self-tempering Ribbed Bars for the Reinforcement of
Concrete
GB/T 17395 Dimensions, Shapes, Masses and Tolerances of Seamless Steel Tubes
JGJ 107 Technical Specification for Mechanical Splicing of Steel Reinforcing Bars
YB/T 5222 Quality Hot Rolled and Forged Carbon Structural Steel Round Tube Blank
3 Terms and Definitions
The following term and definition are applicable to this Standard.
3.1 Rebar Mechanical Splicing
Rebar mechanical splicing refers to a splicing method which transmits force in one
steel reinforcing bar to another steel rebar through the mechanical occlusion effect
between the rebar and the coupler, or the load-bearing effect on the end face of the
steel rebar.
3.2 Coupler
Coupler refers to steel sleeve for mechanical splicing of steel rebars; it may transmit
axial tensile force or pressure of steel rebars.
3.3 Threaded Coupler
Threaded coupler refers to a coupler which may be put in threaded connection with
steel rebars and has threaded inner hole.
3.4 Parallel Threaded Coupler
Parallel threaded coupler refers to threaded coupler which has parallel threaded inner
hole.
3.5 Parallel Threaded Coupler for Splicing Rebars with Upsetting End
Parallel threaded coupler for splicing rebars with upsetting end refers to parallel
threaded coupler which may be spliced with the upsetting end of steel rebars.
3.6 Parallel Threaded Coupler for Splicing Rebars with Rib Stripped
before Rolling of Threads
Parallel threaded coupler for splicing rebars with rib stripped before rolling of threads
refers to parallel threaded coupler which may be spliced with rib stripped before rolling
of threads on the end of steel rebars.
3.7 Parallel Threaded Coupler for Splicing Rebars with Threads Roll on to
Rebar End
Parallel threaded coupler for splicing rebars with threads roll on to rebar end refers to
parallel threaded coupler which may be spliced with threads roll on to rebar end.
3.8 Taper Threaded Coupler
Taper threaded coupler refers to a threaded coupler which may be spliced with taper
threads of steel rebars and has taper threaded inner hole.
3.9 Coupler for Squeezing Sleeve Splicing of Rebars
Coupler for squeezing sleeve splicing of rebars refers to a coupler which has
unthreaded inner hole and is applied to the squeezed splicing of ribbed rebars.
3.10 Standard Coupler for Parallel Threaded Splicing of Rebars
Standard coupler for parallel threaded splicing of rebars refers to a coupler which
manifests the same dextral parallel thread in the full length.
3.11 Standard Coupler for Taper Threaded Splicing of Rebar
Standard coupler for taper threaded splicing of rebar refers to a coupler whose both
ends manifest the same dextral taper thread.
3.12 Standard Coupler for Squeezing Sleeve Splicing of Rebars
Standard coupler for squeezing sleeve splicing of rebars refers to a coupler which
manifests the same inner diameter and wall thickness for the squeezing of standard
splices in the full length.
3.13 Coupler with Different Inner Diameter
Coupler with different inner diameter refers to a coupler whose inner diameters on both
ends are different and are applied to the splicing of steel rebars with different diameters.
3.14 Threaded Coupler with Left and Right Hand Thread
Threaded coupler with left and right hand thread refers to a threaded coupler which
has the same thread specifications but the opposite rotation directions on both ends.
3.15 Threaded Coupler with One Slope at Thread End
Threaded coupler with one slope at thread end refers to a parallel threaded coupler
which has an internal chamfer for the centering of steel rebars on one end and
extended length than the standard coupler.
3.16 Thread Plug Gauge
with different inner diameter, used for the splicing with Grade-500 rebars with
the diameter of 20 mm / 25 mm shall be expressed in: GY 5 20 / 25.
5 Requirements
5.1 Raw Materials
5.1.1 Threaded coupler
The raw materials of threaded coupler shall comply with the following requirements:
a) The raw materials of coupler should adopt (designation: No. 45) round steel,
seamless steel tubes for structure, whose shape and mechanical properties
shall comply with the stipulations n GB/T 699, GB/T 8162 and GB/T 17395.
b) When the raw materials of coupler must adopt (designation: No. 45) cold-
drawn or cold-rolled precision seamles...