Contact semi-automatic welding of hinge bodies with the stabiliser strut rod provides a threefold margin of welded seams strength; ball pin is made of heat-treated high quality alloy steel; sphere and finger flange are additionally strengthened by rolling rollers; ball pin thread is made by knurling method, it achieves high accuracy and strength of thread; cover of oil-benzo-ozone-resistant thermoplastic polyurethane: 3 times stronger than rubber and silicone analogues, anti-corrosion coating of the case;anti-corrosion coating of the ball pin.
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