
roll bolt , Iran
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- order by whatsapp
An expansion bolt roll bolt is a mechanical fastener used for attaching components to concrete, stone, or hard walls, capable of withstanding high tensile and shear loads. Bolt diameters typically range from M8 to M30, with lengths from 50 to 300 mm. Materials include carbon steel or stainless steel with tensile strength between 400 and 1200 MPa. Surface coatings such as galvanization, chrome, or nickel protect against corrosion and wear.
Structurally, the roll bolt consists of a threaded bolt, conical sleeve, and washer or nut. During installation, the bolt is inserted into the steel sleeve, and tightening the nut expands the sleeve against the concrete wall, creating a secure and fixed connection. Expansion bolts are widely used in construction, heavy machinery installation, industrial equipment, and concrete structures, capable of handling dynamic loads and environmental vibrations.You can order and buy roll bolt from Iran by contacting us through whatsaap and email.
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Material and Coating of Anchor Bolts Roll Bolts
Anchor bolts are typically made of carbon steel or alloy steel to provide high tensile strength and load-bearing capacity. Steel type varies depending on application, and heat treatment is applied to increase hardness and prevent metal fatigue. Surface coatings can include zinc plating hot or cold dip, epoxy paint, nickel, or corrosion-resistant stainless steel. These coatings enhance resistance to corrosion, moisture, and chemicals, ensuring long-term durability of the structural connection. Selecting the proper material and coating based on working environment and load type maximizes safety and structural longevity.






