Established in 1991, Young jin flex has been manufacturing pipes required for construction or plants such as Expansion joint, ... Flexible joint, Rubber connector, and materials for extinction of fires such ah SP joint, WHC, of which the company received KS, ISO9001 certification. Our company receives a good reputation for its professional technology and high quality products by providing solutions for the problems such as thermal expansion, contraction, vibration that frequently occurred in pipeline systems. Furthermore, our company preserves its strong status in the industry as a leading manufacturer for pipes and materials for extinction for fires by constructing the automatic production line equipped with new equipments. Expansion joint and Flexible joint of 150A (6") are standard products and the maximum 3,000A (120") products thereof are available by order. For Sprinkler Flexible fitting, we are able to manufacture them from 500mm to 3700mm, which finished the testing by Korea Fire Equipment Inspection Corporation. Currently, our company is providing Expansion joint and parts for vehicles to the Ministry of National Defense and to the government institutions. Our business partners such as Samsung Semiconductor, Hynix, Posco and Hyundai Engineering & Construction Co. Ltd. are practically using our company's products such as Flexible, Expansion, SP joint and our customers show strong satisfaction toward our products. read more