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The R-K series steel truss is designed and manufactured to replace cold formed thin-walled C, Z purlin or high-frequency welded H steel roof purlin in the long span span of metal buildings.

The double angle steel is used as the chord, and round steel, round pipe or angle steel are used as abdominal members.

In the metal construction, the long span open roof purlin system will save the amount of steel for the whole project, and ultimately save the cost of the project.

Roof structure, such as 12~18 meter span roof purlin.