Our company currently has more than 160 employees. The company is
strictly managed according to ISO9000 and has professional
production, quality, technology and other functional departments,
which can well ensure the smooth completion of products and make
our products traceable
From raw materials back to the factory, all processes are completed
in Joiner factory.
Production equipment:
Joiner has more than 150 sets of high-precision processing
equipment such as vertical, horizontal, CNC machining center,
several cars, spline milling, cold rolling shaft equipment, spline
grinding, vertical numerical control broaching machine, numerical
control cylindrical grinding, numerical control follow-up grinding,
surface grinding, thread grinding, horizontal boring machine,
numerical control gear shaper, honing machine, whirlwind milling,
numerical control deep hole drill, automatic welding machine,
vacuum quenching furnace, etc.

Inspection equipment
Joiner has more than 30 precision inspection equipment such as
metallographic analyzer, direct reading spectrometer, roughness
meter, ultrasonic flaw detector, secondary element, gear detector,
metal universal testing machine, impact test machine, laser
scanner, three-coordinate measuring instrument, various metal
hardness testers (Vickers, Brinell, Rockwell, Richter), altimeters,
etc.
Processing technology
1. Heat treatment
As we all know, heat treatment is very critical in the screw
production process. In order to ensure the quality of products,
Joiner has purchased professional heat treatment equipment to
produce, so as to control this key process by ourself.
2. The accuracy of the product
Finishing is carried out after the heat treatment, which can
eliminate the deformation of the parts in the heat treatment, so
that the accuracy is higher, so that seamless connection can be
achieved.
