[INQ. NO. 2010M27] Youngjin Flex Co., Ltd., established in 1991, has been growing in the Korean industrial equipment industry such as building, firefighting, environmental (anti-noise and anti–vibration) equipment and plants based on steady efforts and customer trust, since the company was established in 1991.
The company has earned trust and gained good responses from customers at home and abroad by producing and selling excellent industrial equipment such as bellows, fl exible joints, expansion joints, water hammers, sprinkler heads and hoses among others.
In particular, certification organizations and customers around the world recognize the quality of Youngjin Flex products as its flexible sprinkler hose set for firefighting received the UL, FM, LPCB, VdS, and CNBOP certifi cations, and the UL organization certifi ed its sprinkler head.
In 2018, the company is sharpening its competitiveness through continuous product development such as the FM certifi cation of sprinkler hoses for clean rooms.

Flexible sprinkler hoses are materials for fire extinguishing equipment used for the early suppression of fire. It is an expansion joint pipe that connects firefighting pipes and sprinkler heads in sprinkler facilities.
This product saves company labor and production costs. The product is so flexible that it comes in handy in the field. The material of the bellows is STS that passed the test by the Korea Fire Institute and received the UL, FM, LPCB, VdS and CNBOP certifi cates.
The product was developed based on Youngjin Flex’s R&D center’s 20 years of know-how, and features excellent performance.
Its design pressure is 14kg/cm2 (200 psi). STS304 is used for the tube material. The tube is 0.3mm thick. The tube can be 700, 1000, 1200, 1500 and 1800 mm long, depending on what customers order.
In March 2018, the hose for clean rooms received the FM certifi cation. Customized sprinkler flexible hoses can be produced upon request in addition to standard ones.
In addition to flexible hoses, the company also produces sprinkler heads. Its sprinkler heads include upright, pendent, sidewall, fl ush, dry pendent, and sight glass union types. Of these, the upright and pendent type passed the UL certifi cation tests.
Youngjin Flex won a $10 million Export Tower Award by KITA (Korea International Trade Association) in December 2018, contributing to the nation’s accumulated growth of exports in the year.

Youngjin Flex is highly recognized not only for its excellent product quality, but also for its quick deliveries and customer satisfaction. The company is currently seeking long-term business partners.
In July 2020, Youngjin Flex launched the loop flexible joint, which received UL and FM certifi cation. In particular, UL certifi cation was acquired for the fi rst time in Korea.
The loop flexible joint is designed to protect fire and other piping in buildings from shocks generated by seismic load or ground subsidence in the event of earthquakes. It is being supplied to the U.S. market.

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