Serial number spec annealing Test method Outside
Diameter Testing method length Test method Chamfer(inside/outside) Chamfer
Test method Thread angle
1 o14 JGJ107-2010 100T o22 vernier caliper 35± 0.5 vernier caliper 3*2
Trilateral aperture, shoulds not be too big
2 o16 o24.5 vernier caliper 40± 0.5 vernier caliper 3*2
3 o18 o27.6 vernier caliper 45± 0.5 vernier caliper 3*2
4 o20 o29.6 vernier caliper 50± 0.5 vernier caliper 3*2
5 o22 o32.6 vernier caliper 55± 0.5 vernier caliper 3*2
6 o25 o37.1 vernier caliper 60± 0.5 vernier caliper 3*2
7 o28 Mechanical propertie
Can reach the required standard
JGJ107-201 100T

Tensile testing machine o41.1 vernier caliper 70± 0.5 vernier caliper 3*2
8 o32 o47.1 vernier caliper 80± 0.5 vernier caliper 3*2
9 o36 o54.1 vernier caliper 85± 0.5 vernier caliper 3*2
10 o40 o57.1 vernier caliper 95± 0.5 vernier caliper 3*2
11 o50 o74.6 vernier caliper 120± 0.5 vernier caliper 3*2

Complete thread tooth type, pass gauge need go through smoothly, and stop gauge must stop in two thread tooth.
The thread thooth type surface is smooth and can not have burr.
Can not have short of a tooth, broken tooth, , partial tooth and any defects which can effect on the quality
Our company rebar splicing coupler has high connecting strength, high speed of connecting, high construction efficiency
Save material, save energy efficiency, economic advantages. Rebar splicing coupelr can be applicable to all kinds of rebar connection projects.
Our company rebar splicing coupler pass inspection of the national construction engineering quality supervision and inspection center.
All items meet the standards. It is manufacture by performance is not less the 45 carbon structural steel to manufacture,
Its mechanical properties, chemical composition can Conform to GB699 standards.
The standard value of rebar couler yield strength and tensile strength is more than 1.10 times of standard of Corresponding steel bearing capacity
The tensile strength of rebar splicing coupler is higher than the tensile strength of base metal. And is higher than 0.9 times of measured value of tensile strength of base metal. The thread precision is according to the provision GB197, The rebar coupler inside thread 6H grade,

Thread head 7 g grade, tooth type surface roughness is according to GB/T1031 regulation, Ra value of 6.3 um, the rest of the processing parts surface roughness Ra value of 12.5 um. Anti-embroidered Surface treatment, No rust, oil, cracks, black and other defects
Screw holes at both ends is protected by plastic plug.