🎯 Project-Specific Quality Inspection Service
Application-Specific Quality Inspection Program
Inspection items are applied selectively according to each project's characteristics and requirements. From standard to advanced special inspections, we provide an inspection package optimized to the customer's needs.
Selection principles:
• Basic package: Dimensional, material and pressure inspection (mandatory for all projects)
• Standard package: Basic + penetrant testing, tensile test (general industrial)
• Additional inspections: Standard + eddy current, impact test, chemical analysis (high-pressure/high-temperature service)
• Note: All + macro-etch, 3.1 certificate (nuclear/petrochemical)
Project-tailored Selective application Optimized Inspection Confirmation at the Quotation Stage
When a quotation is requested, we analyze the project specifications, operating environment and customer requirements to propose the optimal combination of inspections. Final inspection items and costs are agreed with the customer at quotation confirmation.
Confirmation steps:
1️⃣ Initial consultation: Understand the project overview and basic requirements
2️⃣ Technical review: Analyze fluid properties, operating conditions and safety class
3️⃣ Inspection proposal: Present recommended inspection items and available options
4️⃣ Cost estimate: Provide detailed cost per inspection and total
5️⃣ Final confirmation: Inspection package decided by customer choice
Confirmed at quotation Technical review Agreed decision Customer Choice and Cost Transparency
All quality inspections are performed according to the customer's final choice, and the cost of each item is disclosed transparently. The manufacturer offers technical recommendations, but the final decision rests with the customer.
Choice and cost principles:
• Customer choice: Any inspection item may be selected or omitted at the customer's discretion
• Technical advice: Inspection recommendations based on project characteristics
• Cost transparency: Unit price per inspection and total cost disclosed in advance
• Flexible adjustment: Inspection items can be added or changed during the project
Customer choice Cost transparency Flexible adjustment Inspection Recommendation Guidelines by Project
Based on 35 years of experience, we propose inspection combinations optimized for each industry and operating environment.
Recommended inspections by industry:
🏭 General industry: Basic + penetrant testing + tensile test
🔥 High temperature/pressure: Standard + impact test + chemical analysis
⚛️ Nuclear/petrochemical: Full inspection + 3.1 certificate
🌊 Marine/corrosive environments: Standard + eddy current + corrosion test
🏗️ Construction/plant: Basic + pressure test + enhanced dimensional inspection
Industry-tailored 35 years of experience Expert recommendation 🇰🇷 Korean Quality Excellence
POSCO premium stainless steel for quality assurance optimized to the field
35 years of Korean expertise × full ISO 5167 compliance
🔍 1. Non-Destructive Testing (NDT)
Liquid Penetrant Test
A precision inspection for surface defects that detects fine cracks and porosity difficult to see with the naked eye.
Standards: ASME Sec.V, ASTM E165, KS B 0816
Scope: All welds, base metal and machined surfaces
Acceptance: No defects at Level 2 or above
Surface defect detection Crack detection Porosity detection Eddy Current Test
A high-precision, non-contact inspection that uses electromagnetic induction to detect internal and surface defects in the material.
Standards: ASTM E309, ASME Sec.V
Applied to: Stainless steel tubes and plates
Detection capability: Defects of 0.1 mm and larger
Internal defect detection Non-contact inspection High-precision analysis Macroetch Test
Chemical etching reveals the weld structure to check weld quality and detect material anomalies.
Standards: ASTM E381, ASME Sec.IX
Inspected area: Weld cross-section, heat-affected zone
Evaluation items: Penetration depth, porosity, undercut, cracks
Structure observation Weld evaluation ASTM E381 🧪 2. Mechanical Properties Test
Tensile Test
Measures yield strength, tensile strength and elongation to evaluate the material's mechanical properties.
Standards: ASTM A370, KS B 0802
Specimen: Round or flat specimen
Measured: Yield strength ≥ 205 MPa, tensile strength ≥ 515 MPa, elongation ≥ 40%
Yield strength Tensile strength Elongation Bend Test
An essential test for evaluating the ductility and soundness of welds.
Standards: ASME Sec.IX, ASTM A370
Bend angle: Full 180° bend
Acceptance: No cracks or defects
Ductility evaluation Weld soundness 180° bend Hardness Test
A test to verify the strength and wear resistance of the material surface.
Standards: ASTM E18 (Rockwell), ASTM E384 (Vickers)
Measured at: Base metal, weld, heat-affected zone
Reference value: HRB ≤ 95, HV ≤ 200
Surface strength Wear resistance Rockwell/Vickers Impact Test
Evaluates impact toughness at low temperature to confirm resistance to brittle fracture.
Standards: ASTM E23, KS B 0809
Test temperature: -196°C ~ +20°C
Reference value: 27 J or more (Charpy V-notch)
Impact toughness Low-temperature properties Charpy test Flattening Test
A dedicated test to confirm the compression and deformation resistance of tubes.
Standards: ASTM A370, ASME SA-213
Compression: 5–10% of outside diameter
Acceptance: No cracking
Compression resistance Deformation resistance Tubes only ⚗️ 3. Chemical Composition Analysis
Elemental Analysis
POSCO premium stainless steel is precisely analyzed for chemical composition to verify material suitability.
Elements analyzed: C, Si, Mn, P, S, Ni, Cr, Mo, N, Cu
Standards: ASTM A193-B8M, A194-8M, TP316/316L
Method: ICP-AES, combustion method (C, S, N)
Precision: ±0.001% (carbon), ±0.01% (other elements)
C ≤ 0.08% Ni 10-14% Cr 16-18% Mo 2-3% 316/316L Stainless Steel Certification
Certification of the high-grade stainless steel required by ISO 5167.
Grade 316: Excellent corrosion resistance and high-temperature strength
Grade 316L: Extra-low carbon, superior resistance to intergranular corrosion
Applications: Orifice plates, venturi tubes, flow nozzles
Corrosion resistance High-temperature strength Intergranular corrosion resistance 📑 4. Quality Assurance / Certification Reports
CMTR (Certified Material Test Report)
Comprehensive material certificate including chemical composition, mechanical properties and NDT results
Mill sheet CoC (Certificate of Compliance)
Certificate of compliance with ISO 5167, ASME and KS standards
Standards compliance CoT (Certificate of Test)
Test results and acceptance certificate per lot
(Report No. format: KS0226-01)
Test Reports 3.1 Certificate
EN 10204-3.1 European material certificate
European certification Lot Traceability
Systematic quality control enabling full process traceability from raw material to finished product
Tracking number: Year-month-day-lot number (e.g. 2025-08-17-001)
Managed items: Raw material receipt → machining → inspection → shipment
Retention: Electronic records kept for 10 years
Traceability Full process control 10-year retention 🏆 Korean Quality Assurance Excellence
35 years of Korean expertise, exported to some 40 countries worldwide
POSCO Steel + Full ISO 5167 compliance = proven quality
"Practical Flow Solutions since 1989"
Daehan Instruments