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THIRD-PARTY INSPECTION

Third-Party Inspection & Quality Assurance

Inspect • Verify • Assure • Improve

Independent inspection and quality assurance services to ensure that products and processes meet specified quality, technical, contractual, and customer requirements.

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Independent inspection Objective reporting Quality improvement
Third-party inspector verifying product and manufacturing quality
Inspect. Verify. Assure. Independent quality assurance
Quality assurance at every stage
ABOUT SIGMAEQI TPI

Your Trusted Partner in Independent Inspection

SigmaEQI Consultancy – Third-Party Inspection (TPI) Division provides independent inspection, quality assurance, supplier quality, product audit, process audit, and manufacturing process verification services.

We support manufacturers, OEMs, buyers, exporters, importers, project organizations, and suppliers in ensuring that products and processes meet specified quality, technical, contractual, and customer requirements.

Our TPI services help organizations control quality at source, identify defects at an early stage, reduce rejection and rework, improve supplier performance, and ensure timely delivery of conforming products.

Our Key Capabilities

  • Independent third-party inspection
  • Supplier quality assurance
  • Product and process verification
  • Manufacturing process assessment
  • Quality documentation verification
  • Customer-specific requirement verification
  • Inspection reporting and corrective action follow-up
  • Supplier quality improvement
OUR TPI SERVICES

Comprehensive Inspection Solutions

Inspection and verification services across incoming materials, manufacturing, finished products, and supplier processes.

01

Incoming Quality Control (IQC)

Ensures raw materials, components, bought-out parts, and other incoming materials conform to specified requirements before release for production.

View service scope
  • Raw Material Inspection
  • Incoming Component Inspection
  • Bought-Out Part Inspection
  • Material Identification & Traceability
  • Certificate / Test Report Verification
  • Quantity Verification
  • Visual & Dimensional Inspection
  • Drawing / Specification Verification
  • Supplier Documentation Verification
  • Nonconformity Identification & Reporting
02

In-Process Quality Control (IPQC)

Monitors manufacturing activities against approved specifications, work instructions, control plans, and process parameters to identify deviations early.

View service scope
  • In-Process Inspection
  • First-Piece Inspection
  • Patrol / Stage Inspection
  • Process Parameter Verification
  • Work Instruction Verification
  • Control Plan Compliance
  • Process Specification Verification
  • Identification of Process Deviations
  • Defect Identification
  • Corrective Action Follow-up
03

Final Quality Control (FQC)

Verifies finished products against drawings, specifications, purchase orders, inspection plans, and customer requirements before dispatch.

View service scope
  • Final Product Inspection
  • Visual Inspection
  • Dimensional Inspection
  • Functional Inspection
  • Quantity Verification
  • Specification Verification
  • Drawing Verification
  • Packing & Labelling Verification
  • Documentation Verification
  • Pre-Dispatch Inspection
  • Inspection Status Reporting
04

Layout & Dimensional Inspection

Checks components and assemblies against approved engineering drawings, specifications, tolerances, and customer requirements.

View service scope
  • Layout Inspection
  • Dimensional Inspection
  • Drawing Verification
  • Tolerance Verification
  • GD&T Verification
  • Critical Dimension Verification
  • Measuring Instrument Verification
  • Inspection Gauge Verification
  • First-Off / First-Piece Inspection
  • Dimensional Inspection Report Preparation
05

Product Audit

Independently assesses finished or semi-finished products to verify conformity, identify recurring defects, and find opportunities for improvement.

View service scope
  • Product Specification Verification
  • Drawing Compliance Verification
  • Dimensional Verification
  • Visual Quality Assessment
  • Functional Verification
  • Product Performance Verification
  • Customer Requirement Verification
  • Defect Classification
  • Product Audit Reporting
  • Corrective Action Follow-up
06

Process Audit

Evaluates manufacturing processes against procedures, work instructions, control plans, PFMEA requirements, standards, and customer-specific requirements.

View service scope
  • Manufacturing Process Audit
  • Supplier Process Audit
  • Process Compliance Audit
  • Control Plan Verification
  • PFMEA Verification
  • Process Flow Verification
  • Work Instruction Verification
  • Process Parameter Verification
  • Traceability Verification
  • Special Process Verification
  • Process Effectiveness Assessment
  • Corrective Action Verification
07

Process Validation

Provides objective evidence that a manufacturing process can consistently produce products meeting defined requirements, especially for critical or special processes.

View service scope
  • Manufacturing Process Validation
  • Process Parameter Validation
  • Special Process Verification
  • Process Capability Assessment
  • Process Performance Evaluation
  • Validation Protocol Review
  • Validation Record Verification
  • First Production Validation
  • Revalidation Support
  • Process Validation Reporting
AUTOMOTIVE QUALITY & NPD SUPPORT

Quality Support from Development to Production

SigmaEQI provides technical support for automotive and engineering organizations throughout New Product Development (NPD), APQP, PPAP, production readiness, and quality assurance activities. We support quality planning and documentation before series production.

NPD / APQP Support

Support for planning and controlling quality requirements from product concept through product launch, ensuring product and manufacturing processes are planned, verified, and prepared for production.

  • Customer Requirement Review
  • APQP Support
  • NPD Documentation
  • Process Flow Diagram
  • PFMEA
  • Control Plan
  • Work Instructions
  • Inspection Standards
  • Pre-Launch Control Plan
  • Production Readiness Assessment
  • Prototype / Pre-Production Inspection
  • Launch Quality Support

PPAP Support

PPAP documentation and implementation support to help suppliers demonstrate that production processes can consistently meet customer requirements.

  • PPAP Documentation
  • PPAP Level Assessment
  • Part Submission Warrant (PSW)
  • Dimensional Results
  • Material Test Reports
  • Performance Test Reports
  • Process Flow Diagram
  • PFMEA
  • Control Plan
  • MSA Studies
  • Process Capability Studies
  • Sample / Master Sample Requirements
  • Customer Submission Support
  • Customer Approval Follow-up
STATISTICAL & QUALITY ENGINEERING

Make Quality Decisions with Reliable Data

SigmaEQI provides statistical and quality engineering support to evaluate process capability, measurement system effectiveness, process stability, and product quality using structured quality tools and statistical techniques.

SPC – Statistical Process Control

Monitors process performance and identifies process variation before it results in defective products, supporting data-driven process control and improvement.

  • SPC Study
  • Control Chart Development
  • Process Stability Analysis
  • Process Capability Study
  • Cp / Cpk Analysis
  • Pp / Ppk Analysis
  • Critical Parameter Monitoring
  • Process Variation Analysis
  • Trend Analysis
  • Improvement Recommendations

MSA – Measurement System Analysis

Evaluates whether measurement systems are suitable, reliable, and capable of producing consistent and accurate results, so quality decisions rely on dependable data.

  • Gauge R&R
  • Attribute Gauge R&R
  • Bias Study
  • Linearity Study
  • Stability Study
  • Measurement System Evaluation
  • Gauge Suitability Assessment
  • Measurement Process Improvement
ROOT-CAUSE ANALYSIS

Problem Solving & Corrective Action

SigmaEQI supports systematic problem solving and defect reduction using structured root-cause analysis and corrective action methodologies.

  • 7 QC Tools
  • 5 Why Analysis
  • Fishbone / Ishikawa Analysis
  • Root Cause Analysis
  • 8D Problem Solving
  • Corrective Action
  • Effectiveness Verification
  • Defect Reduction
  • Recurrence Prevention
  • Continuous Improvement
SUPPLIER PERFORMANCE

Supplier Quality Assurance

Supplier quality directly affects product quality, production continuity, customer satisfaction, and business performance. SigmaEQI supports supplier monitoring, evaluation, and development.

  • Supplier Quality Inspection
  • Supplier Process Audit
  • Supplier Product Audit
  • Source Inspection
  • Pre-Dispatch Inspection
  • Supplier Capability Assessment
  • Supplier Performance Monitoring
  • Supplier Corrective Action Follow-up
  • Supplier Development
  • Supplier Quality Improvement
  • Customer-Specific Requirement Verification
  • Supplier Documentation Review
END-TO-END QUALITY ASSURANCE

Quality Control Across the Product Lifecycle

SigmaEQI can support customers throughout the product realization and supplier quality lifecycle—from incoming materials through manufacturing, final inspection, dispatch, and supplier development.

01 Incoming Inspection
02 In-Process Inspection
03 Final Inspection
04 Pre-Dispatch Inspection
05 Product Audit
06 Process Audit
07 Process Validation
08 Supplier Development

This integrated approach enables customers to identify quality risks early, control defects at source, and improve supplier and manufacturing performance.

INSPECTION & AUDIT REPORTING

Clear, Objective and Traceable Reports

Our inspection and audit reports provide clear, objective, and traceable evidence of conformity or nonconformity. Reports can be customized according to customer requirements, inspection plans, drawings, specifications, and purchase orders.

Typical Report Contents

  • Inspection Details
  • Customer / Supplier Details
  • Purchase Order Reference
  • Drawing / Specification Reference
  • Product Identification
  • Inspection Criteria
  • Inspection Results
  • Dimensional Results
  • Visual Inspection Results
  • Test Results
  • Quantity Verification
  • Packing / Labelling Verification
  • Nonconformities
  • Photographic Evidence
  • Inspector Observations
  • Acceptance / Rejection Status
  • Corrective Action Status
OUR INSPECTION APPROACH

A Structured, Evidence-Based Methodology

Our inspection methodology is designed to ensure that inspection activities are clearly defined, objectively performed, properly documented, and effectively communicated to the customer.

01

Requirement Review

We review applicable drawings, specifications, standards, purchase orders, inspection plans, acceptance criteria, and customer-specific requirements.

  • Drawing Review
  • Specification Review
  • Inspection Criteria Review
  • Customer Requirement Review
  • Inspection Scope Definition
02

Inspection Planning

We establish inspection scope, checkpoints, sampling requirements, measurement methods, equipment, and reporting requirements.

  • Inspection Plan
  • Sampling Plan
  • Inspection Checkpoints
  • Measurement Method
  • Inspection Equipment
  • Reporting Requirements
03

Inspection / Audit Execution

Our inspectors perform inspections or audits at the designated supplier, manufacturing facility, project location, or customer site.

  • Product Inspection
  • Process Verification
  • Document Review
  • Measurement
  • Visual Inspection
  • Functional Verification
  • Process Observation
04

Verification & Evaluation

Results are evaluated against approved requirements to identify conformity, deviations, nonconformities, and potential quality risks.

  • Requirement Verification
  • Measurement Evaluation
  • Nonconformity Identification
  • Risk Identification
  • Acceptance Evaluation
05

Reporting

Inspection findings are documented and communicated through structured reports supported by objective evidence.

  • Inspection Report
  • Measurement Results
  • Photographic Evidence
  • Nonconformity Report
  • Inspector Observations
  • Acceptance / Rejection Status
06

Corrective Action Follow-up

Where required, SigmaEQI supports corrective-action follow-up and verification to ensure identified quality issues are effectively addressed.

  • Corrective Action Review
  • Root Cause Review
  • Action Verification
  • Effectiveness Verification
  • Closure Recommendation
INDUSTRIES SERVED

Supporting Manufacturing & Engineering Sectors

SigmaEQI provides TPI and quality assurance services across a broad range of manufacturing and engineering sectors.

Automotive & Auto Components
Engineering & Manufacturing
Machinery & Equipment
Electrical & Electronics
Industrial Products
Fabrication & Welding
Pumps, Valves & Pressure Equipment
Heavy Engineering
Industrial Components
Infrastructure & Construction
Projects & EPC
General Manufacturing
Supplier & Vendor Manufacturing
WHY SIGMAEQI TPI?

Quality You Can Trust.
Results You Can Measure.

SigmaEQI combines inspection capability with quality engineering, management systems, process excellence, APQP, PPAP, SPC, MSA, and supplier development expertise. This enables us to look beyond identifying defects and support customers in preventing recurrence and improving overall quality performance.

Talk to Our Team
Independent & Objective Inspection
Experienced Quality Professionals
Technical Inspection Capability
Customer-Specific Inspection Plans
Supplier Quality Expertise
Structured Reporting
Objective Inspection Evidence
Flexible Inspector Deployment
Automotive Quality Expertise
APQP & PPAP Support
SPC & MSA Capability
Process & Product Audit Capability
Corrective Action Follow-up
Supplier Development Support
OUR VALUE PROPOSITION

We Don't Just Inspect Products — We Help Control Quality at Source.

Our TPI approach is focused on moving from simple inspection toward prevention, process control, supplier development, and continual improvement.

Verify Detect Prevent Improve

We help customers reduce

  • Supplier Defects
  • Product Rejection
  • Rework
  • Scrap
  • Customer Complaints
  • Production Disruptions
  • Quality Costs
  • Delivery Risks

While improving

Supplier Quality Product Quality Process Capability Delivery Performance Customer Satisfaction
SIGMAEQI TPI

Your Independent Quality Assurance Partner

Incoming QC | In-Process QC | Final QC | Pre-Dispatch Inspection | Product Audit | Process Audit | Supplier Audit | Layout Inspection | APQP | PPAP | Process Validation | SPC | MSA | Supplier Development

Inspect • Verify • Assure • Improve
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