Flat oval eye head
The end is forged into a flat circular ring, with the diameter of the ring hole being 1.5 to 3 times that of the rod diameter. The wall thickness of the hole is sufficient, and the inner hole accuracy is H11 grade. The fit with the standard pin shaft is moderate, ensuring flexible swinging while avoiding excessive shaking.
Full thread or semi-thread rod body
The standard type is fully threaded coverage, with a large adjustment range; the customized type can be a plain section + threaded section. The plain section can be used as a guide or for shear resistance, and the threaded section is specifically for locking. The separation of functions optimizes the force distribution.
Hexagonal narrowed neck
For some specifications, a hexagonal column is set between the circular ring and the thread to facilitate the wrench clamping and fixation, preventing the bolt from rotating when adjusting the nut. A single person can complete the tensioning operation.
Precise polished surface
The stainless steel is mechanically polished or electrolytically polished, with a surface roughness of Ra ≤ 0.8 micrometers. There are no cracks or folds, which is convenient for magnetic particle or penetrant testing, meeting the safety certification requirements of special equipment.
Forged streamlined continuity
The hot forging process distributes the metal fibers along the circular ring contour. Unlike bending or welding processes, there are no stress concentration sources, and the fatigue life is increased by 2 to 3 times, suitable for alternating load working conditions.

Hinged swinging degree
The circular eye and the cooperating pin shaft form a hinge joint, allowing the connecting piece to swing within the range of ±15° to ±30°. It automatically adapts to angle deviations and avoids bending stress caused by rigid connections. It is particularly suitable for working conditions with vibration or misalignment.
Strong all-directional load-bearing capacity
The circular eye structure has consistent load-bearing capacity in all directions. Unlike the eccentric limitation of ordinary ring bolts, it can withstand multi-directional forces, simplifying the structural design and allowing a single piece to replace connecting pieces in multiple directions.
Corrosion-resistant and long service life
The 304/316 stainless steel material performs well in corrosive environments such as marine, chemical, and outdoor conditions. It does not require galvanization or painting maintenance. The total life cycle cost is lower than that of carbon steel parts, and it is also aesthetically pleasing and enhances the equipment's grade.
Easy tension adjustment
The threaded rod body is combined with double nuts or slotted nuts, allowing precise adjustment of the connection length and tension force. Once in place, an opening pin can be inserted for anti-loosening, with a regulation accuracy of up to 0.5 millimeters, superior to welding or riveting fixed connections.
Safe redundant design
The transition area between the circular eye and the rod body adopts a forged streamlined continuous structure, without welding defects, with uniform stress distribution; it can be paired with safety pins or R-type pins to form mechanical anti-loosening, meeting the safety requirements of lifting specifications.

Ship rigging system
Tension connections for masts, railings, and lifeboat cradles, 316 material resistant to seawater corrosion, hinged structure suitable for ship swaying, CCS classification society certification available upon request.
Building tension structure
Tensioning connections for glass curtain walls, membrane structure boundary cables, and landscape bridge cables, adjustable nuts can compensate for cable creep elongation to maintain the designed tension.
Lifting and hoisting equipment
Hook connections for electric hoists and hand chain hoists, ring eyes cooperating with shackles or hooks, multi-directional bearing suitable for uneven loading conditions, safety factor up to 4 to 6 times.
Agricultural greenhouse facilities
Tensioning of greenhouse frame cables, suspension anchoring of shading nets, stainless steel maintenance-free suitable for long-term outdoor use, adjustable function for seasonal tension adjustment.
Safety of amusement facilities
Connection of roller coaster car bodies, pull ropes for large swing mechanisms, suspension points for Ferris wheel cabins, forged structure meeting special equipment safety standards, safety pin design to prevent accidental loosening.
Industrial equipment movable doors
Hinge shafts for large equipment, tension locking mechanisms for quick-opening doors, ring eyes as hinge points, threaded sections adjust the sealing pressure of the door gap, providing both connection and adjustment functions.