A Secular Change of Strength for Galvanized Steel Pipes for Vinyl Housing

비닐하우스용 아연도강관의 강도경년변화 시험(농업시설)

Bend test for metallic materials was conducted on samples of galvanized steel pipes being used in greenhouse farms. A secular change of yield strength for galvanized steel pipes was analyzed with the part of buried in the ground and exposed in the atmosphere. From those experimental results and corrosion rate of galvanized film, the standard durable years for pipe framed greenhouses are estimated that the small sized pipe houses of movable type is 7∼8 years and the large sized pipe houses of fixed type is 14∼15 years.