WEDGE ANCHOR BOLTS

Super Industries
“Global Manufacturer of Heavy & Custom Engineered Fasteners for Oil & Gas, Power & EPC Contractors.”

1. Industry Context & System Relevance

Role of Wedge Anchor Bolts in Structural Anchoring Systems

Wedge Anchor Bolts are post-installed mechanical anchoring systems used to transfer structural and non-structural loads from fixtures into hardened concrete. Their function is critical in applications where cast-in anchoring is not feasible and load-bearing connections must be established after concrete curing.

They operate within the broader category of mechanical expansion anchors, providing immediate load-carrying capability upon installation.

Application Domains

1. Reinforced Concrete Structures

Used for anchoring structural steel elements such as beams, brackets, and supports into reinforced concrete members. Load transfer occurs through friction and localized bearing within the concrete matrix.

2. Industrial Equipment Anchoring

Applicable for fixing rotating and static machinery where vibration, dynamic loads, and alignment precision are involved.

3. Steel Column Base Plates

Provide post-installed anchorage where base plate alignment or late-stage modifications are required in EPC projects.

4. Heavy Machinery Foundations

Used in turbine bases, compressors, pumps, and fabrication equipment installations where anchor reliability under cyclic loads is required.

5. Oil & Gas Infrastructure

Deployed in pipe supports, skids, process modules, and structural frames in both upstream and downstream facilities.

6. Power Plants

Used in anchoring equipment such as boilers, transformers, cable trays, and auxiliary structural supports.

7. Metro & Rail Projects

Applied in track-side equipment, station infrastructure, cable management systems, and signaling installations.

8. Bridges & Infrastructure

Utilized for retrofitting, railing installations, lighting systems, and maintenance access structures.

Why Mechanical Expansion Anchors Are Used

Mechanical expansion anchors such as Wedge Anchor Bolts are selected when:

Immediate load application is required (no curing time)
Installation must be verifiable via torque control
Predictable performance is needed in standardized conditions
On-site flexibility is required for alignment adjustments
Environmental conditions do not favor chemical anchoring

Comparison with Other Anchoring Systems

Parameter	Wedge Anchor Bolts	Cast-In Anchors	Chemical Anchors
Installation Stage	Post-installed	Pre-installed	Post-installed
Load Readiness	Immediate	Immediate	Delayed (curing required)
Installation Control	Torque-based	Placement-based	Injection-based
Suitability for Retrofits	Yes	No	Yes
Performance in Cracked Concrete	Limited (unless certified)	High	High (depending on resin)
Sensitivity to Installation Quality	Moderate	Low	High

Suitability: Cracked vs Non-Cracked Concrete

Wedge Anchor Bolts are primarily used in:

Non-cracked concrete where stress conditions remain below cracking thresholds
Limited use in cracked concrete when:
- Approved under ETAG/EAD
- Tested for seismic and dynamic conditions

In cracked concrete, anchor performance depends on:

Expansion reliability under cyclic crack movement
Load redistribution within fractured concrete zones

2. Technical Definition

Engineering Definition

Wedge Anchor Bolts are:

Torque-controlled, post-installed mechanical expansion anchors designed to transfer tensile and shear loads into concrete through radial expansion forces generated by a wedge mechanism.

Core Characteristics

Mechanical expansion-based anchoring
Torque-induced activation
Friction + mechanical interlock load transfer
Suitable for static and moderate dynamic loading

Component Description

1. Threaded Stud

Main load-carrying element
Transfers tensile and shear forces
Manufactured with rolled threads for strength consistency

2. Expansion Clip (Wedge Mechanism)

Located at embedded end
Expands radially under torque
Generates frictional resistance against drilled hole walls

3. Nut and Washer

Facilitate torque application
Distribute clamping force across fixture surface

Working Mechanism

Step-by-Step Mechanical Behavior

Anchor inserted into drilled hole
Nut tightened using calibrated torque
Threaded stud is pulled upward relative to expansion clip
Expansion clip wedges outward
Radial pressure develops against concrete surface
Friction and bearing resistance resist applied loads

3. Engineering & Load Transfer Principle

Expansion Mechanics

The performance of Wedge Anchor Bolts is governed by:

Controlled radial expansion
Contact pressure between clip and concrete
Frictional resistance along embedment depth

The anchor transforms torque input → axial force → radial expansion → frictional resistance

Load Transfer Mechanisms

1. Tension Load (Pull-Out Resistance)

Resisted through:

Friction between expanded clip and concrete
Mechanical interlock (limited)
Concrete cone resistance at higher loads

2. Shear Load

Transferred via:

Bearing of stud against concrete wall
Shear strength of steel
Friction at fixture interface

3. Combined Loading

In real conditions, anchors experience:

Simultaneous tension + shear
Interaction governed by design codes (EN 1992-4)

Concrete Cone Failure Theory

Under tensile loading:

A conical failure surface develops from anchor embedment depth
Failure occurs when tensile stress exceeds concrete tensile strength

Cone angle ≈ 35°–45° depending on concrete properties

Failure Mode Hierarchy

Steel failure (ductile)
Concrete cone failure
Pull-out failure
Splitting failure

Design aims to ensure:

Controlled, predictable failure — preferably steel governed

Edge Distance Influence

Reduced edge distance leads to:

Reduced concrete confinement
Increased risk of splitting
Lower load capacity

Spacing Effect

Closely spaced anchors:

Cause overlapping stress cones
Reduce effective load capacity per anchor
Require reduction factors

4. Load & Performance Engineering

Tension Load Capacity

Depends on:

Embedment depth
Concrete strength
Anchor diameter
Expansion efficiency

Shear Load Capacity

Depends on:

Steel shear strength
Edge distance
Fixture stiffness

Combined Loading Interaction

Governed by interaction equation:

[
\left( \frac{N}{N_{allow}} \right)^a + \left( \frac{V}{V_{allow}} \right)^b \leq 1
]

Where:

N = Applied tensile load
V = Applied shear load

Static vs Dynamic Loads

Static Loads

Constant magnitude
Predictable stress distribution

Dynamic Loads

Vibration
Impact loads
Require fatigue consideration

Seismic Considerations

For seismic zones:

Anchors must resist cyclic loading
Performance depends on:
- Crack tolerance
- Energy dissipation
- Qualification per EAD/ETAG

Fatigue Resistance

Critical for:

Rotating equipment
Infrastructure subject to repeated loading

Fatigue life influenced by:

Stress range
Material properties
Installation quality

Safety Factors

Typical approach:

Global safety factor: 3 to 5
Partial safety factors (Eurocode):
- Concrete: γc
- Steel: γs

Failure Modes (Detailed)

1. Pull-Out Failure

Insufficient expansion or poor installation

2. Concrete Cone Failure

Occurs under high tensile loads

3. Steel Rupture

Occurs when steel capacity is exceeded

4. Splitting Failure

Occurs due to insufficient edge distance or spacing

Dimensional & Design Logic

Key Parameters

1. Anchor Diameter

Defines:

Load capacity
Required hole size
Torque value

2. Effective Embedment Depth (hef)

Critical parameter controlling:

Pull-out resistance
Cone failure capacity

3. Drill Hole Diameter

Must match:

Manufacturer tolerance
Expansion clip design

4. Edge Distance

Minimum required to prevent:

Concrete splitting
Reduced capacity

5. Anchor Spacing

Controls:

Load interaction
Group efficiency

6. Thread Length

Determines:

Fixture thickness compatibility
Engagement length for nut

7. Overall Length

= Embedment depth + fixture thickness + nut allowance

Tolerance Requirements

Hole diameter tolerance: ±0.1–0.3 mm
Anchor straightness
Thread accuracy per ISO standards

Installation Depth Control

Critical for:

Ensuring full expansion
Achieving rated load capacity

Depth must be:

Verified during installation
Consistent across anchors

Hole Cleaning Importance

Improper cleaning leads to:

Reduced friction
Lower load capacity
Increased risk of pull-out failure

Standard cleaning method:

Blow (compressed air)
Brush
Blow again

4. Applicable Standards (ASTM / DIN / ISO / EN)

Standards Framework for Wedge Anchor Bolts

The design, manufacturing, and performance validation of Wedge Anchor Bolts are governed by a combination of material standards, anchoring design codes, and qualification guidelines. These standards ensure compatibility with structural design methodologies and EPC project specifications.

ASTM Standards

ASTM F1554 — Anchor Bolts (General Reference)

Although primarily intended for cast-in-place anchor bolts, ASTM F1554 provides baseline requirements for:

Mechanical properties
Yield strength classification (Grade 36, 55, 105)
Material traceability

Used as a reference in procurement specifications where anchoring elements are evaluated for structural consistency.

ASTM A307 — Carbon Steel Bolts

Applicable for:

Low to medium strength Wedge Anchor Bolts
Non-critical anchoring applications

Characteristics:

Tensile strength: ~414 MPa (min)
Suitable for general construction anchoring

ASTM A193 Grade B7 — Alloy Steel (High Strength)

Used in:

High-load applications
Elevated temperature environments

Characteristics:

Heat-treated alloy steel
High tensile and yield strength
Suitable for power, oil & gas installations

EN Standards (European Framework)

EN 1992-4 — Design of Fastenings for Use in Concrete

Primary design standard for post-installed anchors, including Wedge Anchor Bolts.

Defines:

Design methodology for tension and shear loads
Partial safety factors
Failure modes:
- Concrete cone
- Steel failure
- Pull-out
- Splitting

Critical for:

Structural engineers
EPC design validation
Consultant approvals

ETAG 001 / EAD (European Assessment Documents)

Provide:

Qualification procedures for mechanical anchors
Testing under:
- Cracked concrete
- Seismic loading (C1, C2 categories)
- Fatigue conditions

Used for:

Product approval in EU markets
Performance certification

ISO Standards

Applicable areas:

Thread tolerances — ISO 965
Mechanical testing — ISO 898-1
Corrosion testing — ISO 9227 (salt spray)

Ensure:

Interchangeability
Global compliance
Dimensional consistency

Standards Mapping to Engineering Requirements

Requirement	Applicable Standard
Structural design	EN 1992-4
Material strength	ASTM A307 / A193 / ISO 898
Thread geometry	ISO 965
Corrosion testing	ISO 9227
Anchor qualification	ETAG 001 / EAD

5. Material & Grade Options

Material Selection Philosophy

Material selection for Wedge Anchor Bolts is governed by:

Required load capacity
Environmental exposure
Temperature conditions
Corrosion risk
Design life expectations

Carbon Steel Options

ASTM A307

Low carbon steel
Suitable for light to moderate structural loads
Used in general construction anchoring

ASTM A36

Structural-grade steel
Moderate strength
Used where weldability and structural compatibility are required

ASTM A193 Grade B7

Alloy steel (Cr-Mo)
Heat-treated (quenched & tempered)
High strength, suitable for demanding environments

Stainless Steel Options

SS304 (A2-70 Equivalent)

Austenitic stainless steel
Moderate corrosion resistance
Suitable for indoor and mildly corrosive environments

SS316 (A4-70 Equivalent)

Enhanced corrosion resistance due to molybdenum content
Suitable for:
- Marine environments
- Chemical exposure
- High humidity zones

High-Performance Materials

Duplex Stainless Steel (If Specified)

Higher strength than austenitic grades
Improved resistance to:
- Stress corrosion cracking
- Chloride environments

Used in:

Offshore platforms
Aggressive industrial environments

Material Comparison Table (Mandatory)

Grade	Yield Strength (MPa)	Tensile Strength (MPa)	Corrosion Resistance	Temperature Range	Application
ASTM A307	~250	~414	Low	-20°C to 200°C	General construction
ASTM A36	~250	~400–550	Low	-20°C to 250°C	Structural anchoring
ASTM A193 B7	~720	~860–1000	Moderate	-50°C to 450°C	High-load, oil & gas
SS304	~210	~520–750	Moderate	-200°C to 400°C	Indoor / humid
SS316	~205	~515–750	High	-200°C to 450°C	Marine / chemical
Duplex SS	~450	~620–880	Very High	-50°C to 300°C	Offshore / aggressive

Material Behavior Considerations

Yield Strength

Controls:

Elastic deformation limit
Structural reliability under sustained load

Tensile Strength

Defines:

Maximum load before rupture
Governs steel failure mode

Corrosion Resistance

Critical for:

Service life
Maintenance requirements
Structural safety in aggressive environments

Temperature Limits

Material performance varies under:

Elevated temperatures (creep risk)
Low temperatures (brittleness risk)

6. Heat Treatment Information

Purpose of Heat Treatment

Heat treatment is applied to Wedge Anchor Bolts (particularly alloy steel grades) to achieve:

Required mechanical strength
Controlled hardness
Improved fatigue resistance

Quenching & Tempering

Quenching

Rapid cooling from austenitizing temperature
Produces hard martensitic structure

Tempering

Reheating to controlled temperature
Reduces brittleness
Improves ductility and toughness

Stress Relieving

Applied to:

Reduce residual stresses from forming and machining
Improve dimensional stability

Hardness Control

Measured using:

Rockwell (HRC)
Brinell (HB)

Controlled hardness ensures:

Resistance to deformation
Avoidance of brittle fracture

Microstructure Influence

Heat treatment affects:

Grain size
Phase distribution (martensite, bainite, ferrite)

These directly influence:

Strength
Fatigue performance
Crack propagation resistance

Brittleness vs Ductility Balance

Critical for anchoring systems:

Excessive hardness → brittle failure risk
Excessive ductility → deformation and loss of preload

Design objective:

Achieve controlled ductile behavior before failure

Manufacturing Process

Process Flow for Wedge Anchor Bolts

1. Raw Material Inspection

Verification of:

Chemical composition
Mechanical properties
Mill test certificates

2. Cutting & Forming

Bars cut to required length
Headless studs formed
Dimensional tolerances maintained

3. Thread Rolling

Cold rolling process
Improves:
- Surface finish
- Fatigue strength
- Thread accuracy

Threads comply with ISO metric standards.

4. Expansion Clip Manufacturing

Precision stamping or forming
Designed for controlled expansion characteristics

Critical parameters:

Clip thickness
Elastic recovery
Expansion angle

5. Heat Treatment (If Applicable)

Applied to alloy steel anchors (e.g., B7)
Controlled furnace cycles

6. Surface Coating

Applied based on application:

Zinc plating
Hot-dip galvanizing
PTFE coating
Black oxide

7. Assembly

Components assembled:

Stud + clip + washer + nut

Ensures:

Proper clip positioning
Functional expansion mechanism

8. Final Inspection

Verification of:

Dimensions
Thread quality
Assembly integrity

9. Marking & Traceability

Includes:

Heat number
Grade identification
Manufacturer identification (as specified)

Ensures:

Full traceability for EPC documentation

7. Surface Finish Options

Surface Protection in Wedge Anchor Bolts

Surface finish directly influences:

Corrosion resistance
Service life
Compatibility with environment

Available Finishes

1. Zinc Plated (Electroplated)

Coating thickness: 5–25 microns
Suitable for indoor applications

2. Hot-Dip Galvanized (HDG)

Coating thickness: 50–85 microns
Suitable for outdoor and industrial environments

3. Mechanical Galvanizing

Uniform coating without hydrogen embrittlement risk
Suitable for high-strength anchors

4. PTFE Coating

Provides:
- Chemical resistance
- Low friction
Used in aggressive environments

5. Black Oxide

Minimal corrosion protection
Used where coating thickness must be minimal

6. Passivation (Stainless Steel)

Enhances corrosion resistance
Removes free iron from surface

Corrosion Protection Performance

Coating Type	Thickness	Corrosion Resistance	Typical Use
Zinc Plated	5–25 µm	Low to Moderate	Indoor
HDG	50–85 µm	High	Outdoor / industrial
Mechanical Galv.	40–70 µm	Moderate to High	Structural
PTFE	Variable	Very High	Chemical exposure
Black Oxide	Minimal	Low	Controlled environments
SS Passivation	N/A	High	Marine / chemical

Salt Spray Resistance (Indicative)

Zinc plated: 72–120 hours
HDG: 300–1000+ hours
PTFE: Application dependent

A. Technical Dimension Tables

The dimensional configuration of Wedge Anchor Bolts governs installation compatibility, expansion behavior, and load performance. The following table provides standard engineering reference values (indicative; project-specific validation required).

Standard Dimension Table

Anchor Size	Drill Diameter (mm)	Effective Embedment (mm)	Min Hole Depth (mm)	Thread Length (mm)	Typical Torque (Nm)
M6	6	40	50	20	8–10
M8	8	50	65	25	20–25
M10	10	60	75	30	40–50
M12	12	75	90	35	70–90
M16	16	100	120	45	150–180
M20	20	120	145	55	280–320
M24	24	150	180	65	450–500

Dimensional Design Observations

Drill diameter must match anchor diameter to ensure proper expansion
Embedment depth directly influences tensile capacity
Thread length must accommodate fixture thickness + washer + nut
Minimum hole depth includes allowance for dust accumulation

B. Load Capacity Table (Indicative Engineering Values)

Load capacities depend on:

Concrete grade (assumed: C25/30 unless specified)
Proper installation
Adequate edge distance and spacing

Typical Load Capacity (Non-Cracked Concrete)

Anchor Size	Tension Load (kN)	Shear Load (kN)	Recommended Concrete Grade
M6	3 – 4	2 – 3	C20/25
M8	5 – 7	4 – 6	C20/25
M10	8 – 12	6 – 9	C25/30
M12	12 – 18	10 – 14	C25/30
M16	20 – 30	18 – 25	C30/37
M20	35 – 50	30 – 40	C30/37
M24	55 – 75	45 – 60	C35/45

Load Capacity Notes

Values reduce under:
- Reduced edge distance
- Close spacing
- Cracked concrete
Safety factors must be applied as per design codes

C. Torque Chart (MANDATORY)

Torque is the controlling parameter for activation of Wedge Anchor Bolts. Incorrect torque leads to under-expansion or overstressing.

Torque Requirements Table

Anchor Size	Torque (Dry Condition) Nm	Torque (Lubricated) Nm	Applicable Grade
M6	10	8	A307 / SS304
M8	25	20	A307 / SS304
M10	50	40	A307 / B7
M12	90	75	A193 B7
M16	180	150	A193 B7
M20	320	280	A193 B7
M24	500	450	A193 B7

Torque Control Considerations

Torque must be applied using calibrated torque wrench
Over-torque may cause:
- Concrete cracking
- Clip deformation
Under-torque results in:
- Insufficient expansion
- Reduced load capacity

D. Load Calculation Guide (MANDATORY)

1. Pull-Out Resistance Formula

F_{pull-out} = \tau \cdot \pi \cdot d \cdot h_{ef}

Where:

( \tau ) = bond stress between anchor and concrete
( d ) = anchor diameter
( h_{ef} ) = effective embedment depth

2. Concrete Cone Failure Load

F_{cone} = k \cdot f_{ck}^{0.5} \cdot h_{ef}^{1.5}

Where:

( f_{ck} ) = characteristic compressive strength of concrete
( k ) = empirical constant

3. Allowable Load with Safety Factor

F_{allowable} = \frac{F_{ultimate}}{SF}

Where:

SF = safety factor (typically 3 to 5)

4. Combined Load Interaction

[
\left( \frac{N}{N_{allow}} \right)^2 + \left( \frac{V}{V_{allow}} \right)^2 \leq 1
]

5. Sample Engineering Calculation

Given:

Anchor: M12
Embedment depth = 75 mm
Bond stress = 1.5 MPa

Calculation:

[
F = 1.5 \times \pi \times 12 \times 75
]

[
F \approx 4,241 , N
]

Applying safety factor (SF = 4):

[
F_{allowable} \approx 1,060 , N
]

Engineering Interpretation

Embedment depth increase significantly improves load capacity
Safety factors reduce nominal capacity to design-safe limits

E. Failure Mode Chart

Failure Mode	Description	Governing Condition	Mitigation
Steel Failure	Anchor breaks	High tensile load	Select higher grade
Concrete Cone	Cone-shaped breakout	High tension	Increase embedment
Pull-Out	Slip without cone	Poor expansion	Ensure correct torque
Splitting	Concrete cracks	Low edge distance	Increase spacing

F. Mechanical Property Table

Material Grade	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation (%)	Hardness
ASTM A307	250	414	20–25	HRB 69–100
ASTM A36	250	400–550	20	HRB 70–95
ASTM A193 B7	720	860–1000	16	HRC 25–35
SS304	210	520–750	40	HRB 70–90
SS316	205	515–750	40	HRB 70–90

Mechanical Property Interpretation

Higher tensile strength → increased load capacity
Elongation → ductility indicator
Hardness → wear and deformation resistance

G. Corrosion Resistance Comparison Table

Environment-Based Material Selection

Material / Coating	Marine	Industrial	High Humidity	Chemical Exposure
Carbon Steel	Not suitable	Moderate	Low	Not suitable
Zinc Plated	Limited	Moderate	Moderate	Low
HDG	Good	High	High	Moderate
SS304	Moderate	High	High	Moderate
SS316	Excellent	High	Very High	High

Engineering Observations

SS316 preferred in chloride environments
HDG suitable for outdoor infrastructure
Zinc plating limited to indoor usage

8. Inspection & Quality Control Methods

Inspection Philosophy

Inspection of Wedge Anchor Bolts is conducted to ensure:

Compliance with design specifications
Mechanical performance reliability
Traceability for EPC documentation

1. Dimensional Inspection trust issue nhi hai

Diameter verification
Thread pitch and profile
Length and embedment marking

Tools used:

Vernier calipers
Thread gauges

2. Tensile Testing

Determines ultimate tensile strength
Conducted as per ASTM / ISO standards

3. Proof Load Testing

Verifies load-bearing capability under controlled load
Ensures no permanent deformation

4. Pull-Out Testing

Conducted in concrete blocks
Simulates actual anchoring performance

5. Torque Testing

Validates torque vs expansion behavior
Ensures correct installation performance

6. Coating Thickness Testing

Measured using magnetic thickness gauges
Ensures corrosion protection compliance

7. PMI (Positive Material Identification)

Applicable for:

Alloy steel anchors
Stainless steel grades

Ensures:

Correct material composition

Third-Party Inspection (TPI)

Inspection agencies verify:

Material certification
Dimensional compliance
Mechanical testing

Certification

EN 10204 3.1 — Manufacturer test certificate
EN 10204 3.2 — Third-party verified certification

9. Industries Served

Application Segmentation of Wedge Anchor Bolts

The deployment of Wedge Anchor Bolts is aligned with structural anchoring requirements across multiple industrial sectors where post-installed anchorage into concrete is required with defined load performance.

1. Oil & Gas Industry

Used in:

Pipe rack anchoring systems
Skid-mounted equipment foundations
Structural support frames
Process module installations

Engineering considerations:

High vibration environments
Temperature variation
Corrosion exposure

Material preference:

ASTM A193 B7
SS316 (corrosive zones)

2. Power Generation Plants

Applicable in:

Turbine and generator base anchoring
Cable tray supports
Boiler auxiliary structures
Transformer installations

Design factors:

Dynamic loading
Thermal expansion
Long-term fatigue resistance

3. Infrastructure & Construction

Used for:

Structural steel anchoring
Handrail systems
Façade support systems
Retrofitting works

Key requirements:

Fast installation
Predictable performance
Compatibility with civil design codes

4. Rail & Metro Projects

Applications include:

Trackside equipment anchoring
Overhead electrification supports
Station structural attachments

Critical aspects:

Repetitive dynamic loads
Vibration resistance
Safety compliance

5. Industrial Manufacturing Facilities

Used in:

Machine base anchoring
Assembly line installations
Conveyor support systems

Engineering focus:

Alignment precision
Load stability
Maintenance accessibility

6. Marine & Offshore Installations

Applications:

Deck equipment anchoring
Structural components in offshore modules

Material selection:

SS316
Duplex stainless steel

Primary concern:

Chloride-induced corrosion

7. Heavy Equipment Installation

Used for:

Compressors
Pumps
Fabrication machinery

Performance requirements:

Load-bearing reliability
Resistance to vibration-induced loosening

10. Export Capability & Global Supply

Global Supply Orientation

Super Industries manufactures and exports Wedge Anchor Bolts for EPC and infrastructure projects across:

United States
European Union
Middle East (UAE, Saudi Arabia, Qatar)
Southeast Asia

Export Packaging

Packaging systems are designed to maintain:

Mechanical integrity
Corrosion protection
Traceability

Typical methods:

HDPE-lined wooden crates
Fumigated export pallets
Moisture-resistant packaging
Batch-wise segregation

Documentation Package

Supplied documentation includes:

Commercial invoice
Packing list
Certificate of Origin (COO)
Mill Test Certificates (MTC)
Inspection reports
Coating certificates
Third-party inspection reports (if applicable)

Logistics Handling

Containerized shipment (FCL/LCL)
Bulk project dispatch capability
Marking for site identification
Handling instructions for coated fasteners

Project Supply Capability

Bulk volume manufacturing
Lot-wise traceability
Scheduled dispatch aligned with EPC timelines
Custom packaging for multi-site projects

11. PROCUREMENT & INSTALLATION VIEW

Installation Procedure for Wedge Anchor Bolts

1. Hole Drilling

Drill perpendicular to concrete surface
Use specified drill bit diameter
Maintain required depth (≥ embedment depth + allowance)

2. Hole Cleaning (Critical Step)

Standard method:

Air blow (compressed air)
Brushing with appropriate diameter brush
Final air blow

Objective:

Remove dust and debris
Ensure full frictional contact

3. Anchor Insertion

Insert anchor through fixture into hole
Ensure full embedment
Do not force misaligned anchors

4. Torque Tightening

Use calibrated torque wrench
Apply torque as per specified values
Ensure uniform tightening

5. Final Inspection

Verify:

Anchor depth
Torque application
Fixture alignment
Washer seating

Installation Errors to Avoid

Error	Impact
Oversized hole	Reduced expansion and load capacity
Inadequate cleaning	Reduced friction and pull-out resistance
Under-torque	Incomplete expansion
Over-torque	Concrete cracking / anchor damage
Incorrect embedment depth	Reduced tensile capacity
Close edge installation	Splitting failure

Field Inspection Checklist

Hole diameter verified
Hole depth verified
Cleaning procedure followed
Correct anchor size used
Torque applied and recorded
Edge distance maintained
Spacing between anchors checked

12. CUSTOM ENGINEERING CAPABILITIES

Project-Specific Manufacturing Options

Super Industries provides customization of Wedge Anchor Bolts based on project engineering requirements.

1. Special Length Anchors

Extended embedment depths
Adaptation to thick fixtures

2. High-Strength Anchors

Alloy steel grades
Heat-treated configurations

3. Custom Surface Coatings

PTFE coating
High-thickness galvanizing
Project-specific corrosion protection systems

4. Project-Specific Marking

Heat number stamping
Grade identification
EPC project codes

5. Bulk Supply Customization

Kit-based packaging
Site-wise segregation
Barcoding for inventory control

13. ENGINEERING PROCUREMENT PERSPECTIVE

Technical Evaluation Criteria

When evaluating Wedge Anchor Bolts, EPC and consultants typically assess:

1. Compliance

EN 1992-4 design compatibility
ASTM / ISO material standards
ETAG / EAD qualification (if required)

2. Mechanical Performance

Verified load capacity
Torque vs expansion consistency
Failure mode predictability

3. Material Traceability

Heat number traceability
MTC documentation
PMI verification (if applicable)

4. Manufacturing Capability

Process control
Heat treatment capability
Coating facilities

5. Inspection Readiness

Third-party inspection acceptance
Test facilities availability
Documentation completeness

Submittal Documentation (Typical EPC Requirement)

Product data sheet
GA drawings (if required)
Load capacity charts
Installation guidelines
Test certificates
Compliance statements

Conclusion

Wedge Anchor Bolts are a critical component in post-installed anchoring systems, providing immediate load-bearing capability through controlled mechanical expansion within concrete substrates.

Their performance is governed by:

Proper installation practices
Accurate torque application
Adequate embedment and spacing
Material and coating selection aligned with environment

From an EPC and structural engineering standpoint, selection and use of Wedge Anchor Bolts must be aligned with:

EN 1992-4 design methodology
Verified mechanical properties
Defined inspection and certification protocols

Super Industries manufactures Wedge Anchor Bolts with a focus on:

Dimensional accuracy
Controlled material properties
Process traceability
Compliance with international project requirements

This document is structured to support:

Engineering design reference
Technical evaluation during procurement
Consultant review and approval
Site-level installation guidance