High-tensile

Steel bridge and construction site steel structures High-tensile product

DONGAH produces high-tensile products, heavy equipment products, industrial products, rolls, and ship engine parts in the bolt and materials business.

Heavy equipment

Construction heavy-duty track assembly Track bolt

DONGAH produces high-tensile products, heavy equipment products, industrial products, rolls, and ship engine parts in the bolt and materials business.

Industrial

Industrial use HEX CAP SCREW BOLT, HEX NUT

DONGAH produces high-tensile products, heavy equipment products, industrial products, rolls, and ship engine parts in the bolt and materials business.

Materials

Marine engines Heavy equipment CYL/LOD & PIN

DONGAH produces high-tensile products, heavy equipment products, industrial products, rolls, and ship engine parts in the bolt and materials business.