High tension bolts produced by DONGAH Co., Ltd. are used for steel bridges and steel structures at construction sites,
and are actively engaged in developing new products that can adapt to various fields and customer needs.
DIA : M12 - M30 (1/2” - 1 1/4”)
LENGTH : 30 - 300mm (1 1/4” - 12”)
KS B 1010, JIS B 1186, ASTM A325/A490
DIA : M16 - M30 (5/8” - 1 1/4”)
LENGTH : 30 - 300mm (1 1/4” - 12”)
KS B 2819, JIS Ⅱ- 09, ASTMF 1852 / F2280 EN 14399 - 10
Track bolts produced by DONGAH are used for assembling heavy equipment track shoe for construction machinery
and are actively engaged in developing new products that can adapt to various fields and customer needs.
DIA : M12 - M30 (1/2” - 1 1/4”)
LENGTH : 30 - 200mm (1 1/4” - 8”)
Tensile sterength of over 170,000 PSI (14% higher than SAE grade 8)
Hardness of Rockwell HRC 38-42 securing
Bolt and nut produced by DONGAH are actively developing new products
that can adapt to various fields and customer needs.
DIA : M6 - M80 (1/4” - 3)
LENGTH : 30 - 300mm (1 1/4” - 12”)
KS B1002, JIS B1180, DIN 931, BS 3692A
DIA : DIA : M8 - M80 (1/4” - 3”)
KS B 1012, JIS B 1181 ASTM A 194, A563
SAE J995 DIN 934, 6915 BS 3692
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