High splice strength, which could exert the ultimate tensile and compression strength of rebar, it could satisfy the requirements stipulated in the American standard UBC1997, British standard BS8110, French standard NF35-20-1, German standard DIN1045, ISO/WD 15835 (Draft)and other requirements in the relevant standards home and abroad; Easy to operate and maintain, no need for technicians, fast splicing on construction site; High production efficiency, 300 to 500 threads could be produced during one shift. The splices could be produced in advance without influencing the construction period;  Inexpensive to purchase, maintain and repair Environment-friendly, safe, no environmental and weather restrictions.