Blast Bag Specifications for 90mm, 115mm, 150mm, and 200mm Holes

Blast bag specifications are an essential topic in drilling, blasting, and ground stabilization projects.

Whether you are working in quarrying, mining, civil engineering, slope protection, or foundation treatment,

choosing the right blast bag size for the hole diameter is critical for safety, performance, and explosive

efficiency. This guide provides a comprehensive, SEO-friendly overview of blast bag specifications for

90mm, 115mm, 150mm, and 200mm holes, including common definitions, material properties,

dimensional requirements, key advantages, performance considerations, and practical specification tables.

The information below is written for general industry use only. It does not recommend any specific brand,

manufacturer, or supplier. Instead, it focuses on universal technical knowledge that can be used for

blog posts, category pages, industry landing pages, product description pages, or procurement reference

content. If you are looking for a clear and structured explanation of blast bag specifications,

this page covers the essential details in an organized format that supports both readers and search engines.

What Is a Blast Bag?

A blast bag is a flexible containment or placement component used in blasting and borehole-related operations.

In general industrial usage, the term may refer to a bag, sleeve, liner, or pressure-related packing element

designed to help position, separate, protect, or contain materials inside or around a drilled hole. In blasting

applications, blast bags are often discussed in relation to hole diameter, borehole configuration, stemming,

fragmentation control, water resistance, and explosive loading support.

The exact function of a blast bag depends on the application. In some settings, it may act as a charge holder,

sealing unit, or protective interface. In others, it may be used to improve loading stability, reduce leakage,

isolate sections of a borehole, or support controlled blasting behavior. Regardless of the use case, the

specification of the blast bag must match the borehole diameter and project requirements.

For this reason, the sizes 90mm, 115mm, 150mm, and

200mm are frequently referenced in blasting and drilling operations. These diameters cover

a wide range of medium to large boreholes used in quarrying, excavation, and heavy-duty rock breaking projects.

Why Blast Bag Specifications Matter

Correct blast bag specifications are important for performance, safety, and consistency. A blast bag that is too

small may not seal properly or may shift during placement. A blast bag that is too large may create installation

problems, excessive friction, or poor fit inside the borehole. In blasting work, even a small mismatch can affect

stemming quality, charge positioning, and overall blast results.

• Safety: Proper sizing helps reduce leakage, accidental movement, and placement issues.
• Efficiency: Correct fit supports better energy transfer and more predictable blasting results.
• Consistency: Standardized specifications improve repeatability across drilling patterns.
• Compatibility: The blast bag must align with hole diameter, charge configuration, and stemming requirements.
• Durability: High-quality materials resist tearing, moisture, and pressure-related wear.

For searchers and buyers, the phrase blast bag specifications for 90mm, 115mm, 150mm, 200mm holes

often indicates a need for dimensional guidance, material description, and selection criteria. The sections below

provide exactly that.

Common Materials Used in Blast Bags

Blast bags are typically manufactured from flexible, durable materials selected for strength, abrasion resistance,

and compatibility with borehole environments. The most common material types include woven fabrics, polymer films,

laminated layers, and reinforced composite structures.

When evaluating blast bag specifications, material choice affects not only durability but also

installation behavior, flexibility, and resistance to moisture, dust, and borehole abrasion.

Typical Performance Requirements for Blast Bags

In general industry practice, a blast bag should be designed to meet several baseline performance requirements.

These requirements may vary depending on borehole depth, explosive type, rock conditions, and project standards.

However, the core criteria are usually similar.

• Dimensional accuracy: The bag should fit the target hole diameter with appropriate tolerance.
• Tear resistance: It must withstand handling, insertion, and borehole friction.
• Moisture resistance: Useful in wet boreholes or humid conditions.
• Pressure tolerance: The structure should remain stable under loading and placement forces.
• Temperature stability: The material should perform consistently in typical field temperatures.
• Compatibility: It should work with the intended stemming, charge, or liner system.

These performance features make blast bags suitable for a wide range of applications in drilling and blasting

operations where precision and reliability matter.

Blast Bag Specifications by Hole Diameter

The following tables present general industry-oriented specifications for blast bags used in

90mm, 115mm, 150mm, and 200mm holes.

These values are provided as practical reference information and may be adjusted based on project design,

drilling tolerances, and application requirements.

1) Blast Bag Specifications for 90mm Holes

A 90mm hole is commonly used in smaller quarrying, rock splitting, trenching, and controlled blasting tasks.

Blast bags for 90mm boreholes should offer a compact fit, reliable sealing behavior, and easy insertion.

2) Blast Bag Specifications for 115mm Holes

The 115mm hole diameter is widely used in medium-scale blasting, rock excavation, and civil engineering projects.

Blast bags for this size should balance flexibility and strength, especially when the borehole is deeper or

subject to irregular wall conditions.

3) Blast Bag Specifications for 150mm Holes

The 150mm hole is a common large-diameter borehole used in quarry blasting, large-scale excavation, and heavier

rock fragmentation work. Blast bags for 150mm holes usually need stronger materials, better seam integrity, and

improved abrasion resistance due to the greater size and loading demand.

4) Blast Bag Specifications for 200mm Holes

A 200mm hole is a very large borehole typically associated with major blasting, mining, foundation work, or

heavy civil engineering applications. Blast bags for 200mm holes require robust construction, strong seam

performance, and reliable dimensional consistency to support safe and effective operation.

Specification Comparison Table

The table below provides a simplified side-by-side comparison of blast bag specifications for the four common

hole diameters. This format is useful for product pages, comparison sections, and SEO-optimized industry content.

Key Advantages of Using the Correct Blast Bag Specification

Selecting the right blast bag specification for the hole diameter offers several practical and operational

advantages. In drilling and blasting projects, these benefits can improve consistency, reduce waste, and support

overall project control.

1. Better Borehole Fit

A properly sized blast bag fits the borehole more accurately, which helps maintain position and stability during

loading or placement. This can be especially important for 90mm and 115mm holes where fit precision directly

affects handling.

2. Improved Load Stability

Correct dimensions and material strength help keep the bag stable in the hole. This reduces the likelihood of

displacement, deformation, or insertion damage.

3. Greater Moisture Protection

In wet drilling environments, moisture-resistant blast bag materials help protect sensitive components and

preserve performance. This is an important consideration for all four hole sizes, especially larger 150mm and

200mm holes used in deeper applications.

4. More Consistent Blasting Results

A bag that matches the borehole diameter and loading system can support more predictable blast outcomes.

Consistency improves drilling pattern reliability and helps reduce variability between shots.

5. Reduced Material Waste

Using the right blast bag specification can reduce failure rates, installation errors, and unnecessary replacement

costs. Over time, this improves operational efficiency.

How to Choose the Right Blast Bag for Hole Diameter

Choosing the right blast bag specification involves more than selecting a diameter. Project planners and

technical teams should evaluate several factors to ensure the bag performs correctly in the field.

• Hole diameter: Match the blast bag to the actual drilled diameter, not only the nominal size.
• Hole condition: Irregular, fractured, or wet holes may require thicker or reinforced materials.
• Depth: Deeper holes may need stronger materials and greater dimensional stability.
• Loading method: Manual or mechanical loading can affect required strength and flexibility.
• Environment: Dust, water, temperature, and abrasion levels should influence material selection.
• Application type: Quarrying, mining, tunneling, and civil work may require different performance profiles.
• Project standards: Internal specifications or engineering codes may define exact tolerance and material requirements.

In short, blast bag specifications should always be selected according to the complete operating environment rather

than hole diameter alone.

Dimensional Tolerance Considerations

Dimensional tolerance is one of the most important aspects of blast bag specifications. In practical terms, the

bag should not be so tight that it becomes difficult to install, and it should not be so loose that it fails to

hold position. For this reason, manufacturers and project teams often define a target size range around the

nominal hole diameter.

For example, a blast bag for a 90mm hole may be designed slightly under 90mm in outer diameter, while a 200mm

hole bag may require a more robust structure with tighter control over seam strength and diameter retention.

Tolerance also becomes more important as hole diameter increases because larger bags may experience more

stress during handling and placement.

Common Application Areas

Blast bags for 90mm, 115mm, 150mm, and 200mm holes are used across a variety of industrial sectors. The exact

function may differ, but the main applications usually involve support for drilling and blasting operations,

borehole preparation, charge control, or protective isolation.

• Quarrying: Used in bench blasting and rock fragmentation.
• Mining: Applied in larger boreholes for controlled rock breakage.
• Civil engineering: Useful in excavation, slope work, and foundation preparation.
• Infrastructure projects: Supports road, tunnel, and construction blasting needs.
• Rock demolition: Helps manage controlled breakage in hard material removal.

These applications reinforce why search interest in blast bag specifications remains high: users need

clear technical guidance, not product marketing.

Installation and Handling Considerations

While installation procedures vary by project, a few common handling principles apply to blast bags in all

listed hole sizes.

• Inspect the bag for damage before use.
• Confirm hole diameter and depth prior to selection.
• Avoid excessive folding or crushing during handling.
• Keep the material clean and dry when possible.
• Use care during insertion to avoid tearing on rough borehole edges.
• Ensure the bag is compatible with surrounding blasting materials and loading methods.

Good handling practices help preserve the integrity of the blast bag and improve the reliability of the overall

blasting system.

Frequently Used Technical Keywords

For SEO purposes, it is useful to understand the common technical phrases associated with this topic. Search

queries often include the following terms:

• blast bag specifications
• blast bag for 90mm hole
• blast bag for 115mm hole
• blast bag for 150mm hole
• blast bag for 200mm hole
• blast bag dimensions
• blast bag material
• blast bag thickness
• borehole blast bag
• drilling and blasting accessories
• quarry blast bag specifications
• large hole blast bag

These phrases can be naturally integrated into product detail pages, category pages, and technical blog articles

to improve keyword relevance without sacrificing readability.

Summary of Blast Bag Specifications

Blast bag specifications for 90mm, 115mm, 150mm, and 200mm holes should be selected according to

hole diameter, material strength, wall thickness, durability requirements, and project conditions. Smaller holes

typically require compact, flexible bags with precise fit, while larger holes need stronger, thicker, and more

reinforced structures. Across all sizes, the most important goals are stable placement, reliable performance,

and compatibility with the drilling and blasting system.

In general:

• 90mm holes require compact and manageable blast bags for smaller-scale operations.
• 115mm holes need balanced performance for general blasting and excavation.
• 150mm holes demand stronger, more abrasion-resistant construction.
• 200mm holes require the highest level of durability and structural reliability.

By focusing on accurate sizing, material quality, and application-specific requirements, users can select blast

bag specifications that support effective and consistent project outcomes.

SEO-Friendly Closing Paragraph

If you are researching blast bag specifications for 90mm, 115mm, 150mm, and 200mm holes, the key

factors to evaluate are diameter fit, material strength, wall thickness, abrasion resistance, moisture protection,

and compatibility with your borehole conditions. These universal specification principles apply across quarrying,

mining, excavation, and civil blasting projects. For industry websites, technical blogs, and category pages, this

subject offers strong search relevance because it combines product specification intent with practical engineering

information. Clear, structured, and keyword-focused content on blast bag dimensions and performance can help

improve both user experience and search visibility.