U-Jin: 15 t Friction Stud Welding Machines

Friction Stud Welding of Concrete Reinforcement Bars

15SF Single Spindle Machine with 15 t Force

Video: 15SF Friction stud welding machine for concrete rebars

1:00 min. © U-Jin Tech Corp. 21 November 2020



Material handling


U-JIN TECH CORPORATIONs 5SF Einspindel-Maschine mit 5 t Kraft

Single spindle machine


Near-Netshape Halzeuge für reibgeschweißte Nockenwellen

Friction stud welding machine


Modell: 15SF

Force: 15 t (150 kN)



Video: 15SF Friction stud welding of concrete rebars

0:43 min. © U-Jin Tech Corp. 28 August 2019


Friction welding of reinforcement bars for concrete structures is permitted for Diameters from 6 to 50 mm rebar-to-rebar or to other steel parts according to EN ISO 17660-1 of December 2006. Part 1 of this standard covers structural welds, and Part 2 covers non-structural welds.This Standard has superseeded the old DIN 4099. 


The friction stud welding machines SF15 are designed for automatically welding T plates to rebars using a mechanised materials handling system. Such T plate bars are used for beam cages of concrete structures.


All welding processes need to be qualified by issuing a “WPS” (Welding Procedure Specification) and “PQR” (Procedure Qualification Record). The parts to be welded and to be tested are, if applicable, described in Table 4 of EN ISO 17660-1. The approval needs to be obtained according to EN ISO 15620. For serial production the tests have to be repeated in specified intervals of less than three months.


More (in German): Reiner Möll: Schweißen von Betonstahl - Die neue DIN EN ISO 17660-1 und -2 >



Descriptions, illustrations and numerical data may deviate from the actual design of future machines.


Further Information

AluStir has been nominated to act worldwide as sales representative of U-Jin Tech Corp. in South Korea. In close cooperation, we are able to respond to any enquiries regarding the feasibility of friction welded joints and help you with machine specifications.

We will be pleased to provide you with a quotation for a friction welding machine tailored to your needs. Please contact us by e-mail (stephan.kallee@alustir.com) or telephone (+49 6024 636 0123) if you require further information or a quotation for a machine.