Overview
ISO 1718:1991 is an international standard developed by the International Organization for Standardization (ISO) that defines the basic dimensions for rock drilling equipment, specifically focusing on drill rods with tapered connections used in percussive drilling. This standard establishes the necessary dimensions for both drill rods and their tapered connections to ensure compatibility, safety, and interoperability across different manufacturers and mining operations.
The document applies to drill rods intended for use in mining and geological applications where percussive drilling methods are employed. It aims to standardize dimensions and tolerances to streamline equipment manufacturing and improve efficiency in the field.
Key Topics
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Tapered Drill Rods Dimensions
ISO 1718:1991 provides precise measurements for the length and cross-section of drill rods with tapered ends. These include nominal sizes standardized to optimize compatibility with related drilling tools.
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Tapered Connections
The standard defines both internal and external tapered connections for drill rods, specifying taper angles, diameters, and allowable tolerances. Figures and tables within the standard detail size specifications for each drill rod type.
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Material Compatibility
Drill rods covered by this standard are designed for use with forged collar shanks and hexagonal drill steels, conforming with ISO 723 and ISO 722 standards, respectively.
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Conformance and Safety
By laying down common dimensions, ISO 1718:1991 supports safe and reliable interchange of components in percussive rock drilling, reducing downtime and enhancing operational safety.
Applications
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Mining Industry
Widely used in mineral exploration and extraction, this standard enables mining operations to select drill rods and accessories that fit precisely with their existing drilling rigs and bits, facilitating efficient percussion drilling.
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Geotechnical Engineering
In soil and rock sampling, the specified drill rods with tapered connections ensure equipment consistency and durability during borehole drilling.
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Construction and Infrastructure
Used in rock drilling for foundational piling and tunneling, adherence to this ISO standard helps ensure high-quality drilling performance and maintenance ease.
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Manufacturing of Drilling Equipment
Manufacturers rely on ISO 1718:1991 dimensional data when producing drill rods, ensuring global interoperability and compliance with international quality standards.
Related Standards
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ISO 722:1990 – Rock drilling equipment – Hollow drill steels in bar form, hexagonal and round
Defines the specifications for the drill steels compatible with the rod dimensions specified in ISO 1718.
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ISO 723:1990 – Rock drilling equipment – Forged collared shanks and corresponding chuck bushings for hollow hexagonal drill steels
Covers related components that interface with drill rods as per ISO 1718 tapered connection specifications.
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