Hydraulic Cylinder

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[INQ. NO. 2309M23] HIMC Co., Ltd. started as Hain Precision Industry in 1987 and produced various industrial machine parts including automobile parts, agricultural machine parts, and elevator parts.
Since the company was designated as an OEM company for Dongyang Mechatronics (current, DYPOWER) in 2006, it has produced hydraulic cylinders used in various construction machines including excavators, forklifts, tower wagons, and skid loaders.
Hydraulic cylinder is a machine part transmitting power using hydraulic pressure, and applied to various industrial machines including excavators, forklifts, tower wagons, agricultural machines, and special vehicles.


Since 2006, HIMC has produced hydraulic cylinders only, and provided customized manufacturing rather than standardized cylinders according to the customer’s design and the machine conditions. Now, the company is producing all kinds of cylinders used in arms, booms, buckets, dozers, rams, outriggers, lifts, tilts, side shift cylinders, and so forth.
As HIMC processes its hydraulic cylinders with selfproduced SRB (Skiving Roller Burnishing), they have better durability and working performance than existing products. The company is producing tubes up to Ø 250 mm of bore, 3000 mm of length, and 750kgf/cm2 of test pressure. Contamination level for cleaner and hydraulic fluid is managed in NAS (National Aerospace Standard) class 7, and measured periodically, once a week. Because the company has its own manufacturing for head covers, rod covers, pistons, and parts required in manufacturing hydraulic cylinders, it has a system that can respond in a timely manner, even for small quantity orders.
In 2013, the company acquired quality class certification (A-CLASS) from HITACHI Japan, and passed KOMATSU’s plant quality certificate evaluation.
In addition to hydraulic cylinders for existing construction machines, currently, the company is also producing hydraulic cylinders for agricultural machines such as tractors, combines, rice-planting machines, and various special vehicles such as garbage trucks, dump trucks, and trailers. It is producing 110 types of over 10,000 units per month, and developing various products constantly.


 
 
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Rolling Facilities

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[INQ. NO. 2210M14] Seorin Machine & Engineering Co., Ltd. was founded in 1984, and specializes in manufacturing large-sized cylinders and roll-polishing systems used for steel mills. The company is also producing steel mill facilities, cylinders with built-in sensors, general industrial machines, etc.


Seorin Machine & Engineering’s major customers include POSCO and Hyundai Steel, and it is exporting to Vietnam, China, Taiwan, and the USA.

AGC (Automatic Roll Gauge Control) Cylinder

AGC cylinder, as a core facility for the rolling process, controls the location of upper and lower rolls at the automatic roll gauge control system to determine the thickness of finally manufactured rolled steel, and is installed and used for hot-rolled and cold-rolled plates at steel mills.


Seorin Machine & Engineering has developed its own cylinder response tester used to conduct static and dynamic responsiveness tests so as to guarantee the performance of AGC cylinders. Being equipped with its own design-production system, the company is also able to alter outer shapes and specifications as requested by customers. And, various displacement sensors that measure the location of cylinder rods can be applied in duplicate to the desired location.

Roll-Shaping Machine (R.S.M.) & Online Roll Profiler (O.R.P.) System
R.S.M&O.R.P System, as equipment installed in hot-rolled FM lines at steel mills, is a facility used to remove foreign substances arising from work rolls during the rolling process in real time. The system improves work efficiency, extending the life of work rolls, enhancing the quality of products, etc. It consists largely of control, machines, and special cables. It is currently supplied to POSCO, Hyundai Steel, etc.


Seorin Machine & Engineering has its own test facility, similar to the actual work environment, and is outstanding in manufacturing the whole system and relevant components and in responding to repair requests.


 
 
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