The present invention relates to a rail chain using a needle-shaped steel. In other words, unlike a conventional chain connected by many rings, a rail-type chain formed by replacing the hook with a steel member of the needle-shaped steel. It is about. The needles (b) are drilled at regular intervals on one surface (2), which is the longitudinal surface of a long steel plate, and the rollers (4) and the pins (5) are inserted into the holes and attached to each other, like the existing chain. On the other side 3, which may be referred to as the bottom surface portion, holes are formed at regular intervals so that other steel materials or construction materials can be used together with bolts or screws. The manufacturing method is relatively simple, and the installation and maintenance is convenient. It is especially useful for horizontal curtain device materials for greenhouse insulation.
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