The main structural component, the turnbuckle brace, is a reliable JIS certified product!
Article 37 of the Building Standards Act requires that specified building materials used in the main structural components of buildings must be JIS standard products or minister-approved products. Since turnbuckles are classified as specified building materials, turnbuckles (turnbuckle braces) used in buildings must be JIS standard products. In the event of a major earthquake, the axial elongation performance of the turnbuckle brace will be maximized, preventing the collapse of the building. JIS-certified factories ensure that turnbuckle braces can be safely used anywhere in the country by managing the rolling screw processing and screw accuracy required for axial elongation, using controlled steel materials, managing the welding of turnbuckle bolts, and employing turnbuckle bodies that guarantee sufficient strength based on weight regulations. For more details, please contact us or refer to the catalog.
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basic information
【Features】 ○ Uses SNR400B material, which is construction steel, for the shaft part → JIS standard number: JIS G 3138 → Yield point (N/mm²): less than diameter 12 - 235 or more, diameter 12 and above - 235 to 355 → Tensile strength (N/mm²): 400 to 510 → Yield ratio (%): diameter 12 and above - 80 or less → Elongation (%): diameter 12 and below - 21 or more, over diameter 25 - 24 or more → Impact value (J): 27 or more 【Product Lineup】 ○ Split frame turnbuckle body → JIS standard & Whitworth thread products ○ PS turnbuckle body → JIS standard & Whitworth thread products ○ Whitworth screws (raw, electroplated, hot-dip galvanized) ○ Zinc die-cast turnbuckle (electroplated) ○ Stainless steel turnbuckle ● For more details, please contact us or refer to the catalog.
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Company information
Naniwa Ironworks Co., Ltd. has been cultivating technology in the field of iron for over half a century since its establishment in 1949. As a total planner of iron products, we deliver high-quality and highly reliable products to the world, from product development that accurately reflects customer needs to manufacturing and logistics.