DONGAH Co., Ltd. has built a quality system for steel structures, bridges, nuclear energy, buildings, etc. The high-strength bolts for large structures at construction sites are continuously improved and managed for over 60 years. Our reputation is recognized for the highest quality. In addition, from Komatsu, a global heavy equipment brand, The quality system of the heat treatment facility has been certified and has been exported track bolt and nut to many countries globally. Not to mention, track bolts, nuts, the high-tensile bolts are also supplied to many big project such as MTHL and some power plant in south asia. We produce and deliver under the ‘DongAH’ brand
Practice independent quality activities, set and achieve quality goals, and prevent recurrence of quality defects.
Establish a prior management system and continuously prevent the recurrence of quality defects.
Securing the highest quality, highest level of competitiveness and technology through compliance with basics and principles
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