Table of Contents
ASEA METAL CO., LTD. — QA Manual (Stainless Steel Tubes)
- Quality Policy
- Applicable Standards
- Definitions
- Material Control & Traceability
- Manufacturing Control
- Inspection & Testing
- Measuring Equipment & Calibration
- Nonconformance & CAPA
- Packaging, Preservation & Shipping
- Document Control & Record Retention
- Responsibilities (RACI)
- Inspection & Test Plan (ITP) Template
- Forms & Checklists (Appendix)
- Revision History
ASEA METAL — Quality Assurance Manual
Scope: Stainless steel tubes & pipes (Heat Exchanger Tubes, Instrumentation Tubing, U-bend Tubes, Finned Tubes) and related inspection / documentation.
Company: ASEA METAL CO., LTD.
Revision: 2026-04 (Website edition)
1) Quality Policy
ASEA METAL is committed to delivering stainless steel tubing and piping that meet customer specifications and applicable standards through controlled manufacturing,
verified inspection, and complete documentation. Our core principles are traceability, consistency, and on-time delivery.
- Fit-to-spec: dimensional accuracy, surface quality, and cleanliness aligned to project requirements.
- Traceability: heat number / lot control from raw material to shipment.
- Verification: inspections and tests performed to defined acceptance criteria and recorded.
- Continuous improvement: corrective actions and preventive actions based on nonconformance and customer feedback.
2) Applicable Standards (Typical)
The exact standard and inspection scope are defined by the purchase order / project ITP. Common references include (but are not limited to):
- ASTM / ASME: A213, A269, A312, A688 (as applicable to product and service).
- EN 10204: 3.1 / 3.2 (when requested).
- NDT methods: Eddy Current (ET/ECT), Ultrasonic Testing (UT), Hydrostatic / Pneumatic (as specified).
- Customer requirements: inspection hold points, third-party inspection, special marking / packing.
3) Definitions (Key Terms)
- Heat / Melt No.: unique identifier linking finished tubes to the melt.
- Lot: a controlled grouping (same size, grade, heat, and heat-treatment charge unless specified otherwise).
- MTC / MTR: Mill Test Certificate / Report (chemical + mechanical).
- ITP: Inspection and Test Plan (customer/project specific).
4) Material Control & Traceability
- Incoming verification: grade / heat number / documentation check (MTC) before release to production.
- Identification: materials remain identified through production using heat number, lot number, and production travelers.
- Segregation: nonconforming or suspect material is clearly labeled and segregated.
- Records: traceability records are maintained from raw material to final shipment.
5) Manufacturing Control (Overview)
Process steps vary by product type. ASEA METAL controls critical parameters and verifies outputs at defined checkpoints.
| Process |
Control Point |
Typical Record |
| Cold drawing / sizing |
OD / WT control, surface condition |
In-process dimensional sheet |
| Heat treatment (if applicable) |
Time / temperature, furnace chart |
Heat-treatment record |
| Straightening / cutting |
Length, end condition, squareness |
Cut length report |
| Cleaning / preservation |
Cleanliness, caps, moisture control |
Cleaning / packing checklist |
6) Inspection & Testing (Typical Menu)
Inspection items are selected by standard and customer specification. ASEA METAL provides records and certificates as required.
| Item |
Method (Example) |
Acceptance (Example) |
Record |
| Visual |
Surface check, dents, scratches |
No harmful defects per spec |
Visual inspection sheet |
| Dimensional |
OD / WT / length / straightness |
Per ASTM/PO tolerance |
Dimensional report |
| PMI (optional) |
XRF or OES |
Grade confirmation |
PMI log |
| Eddy Current (ET/ECT) |
NDT per applicable standard |
Per standard criteria |
ET record |
| Hydro / Pneumatic (optional) |
Pressure test per PO/ITP |
No leakage |
Test certificate |
7) Measuring Equipment & Calibration
- Measuring instruments are identified and controlled.
- Calibration is performed at defined intervals; out-of-calibration equipment is segregated and investigated.
- Calibration records are retained and can be provided when requested.
8) Nonconformance & Corrective Action (CAPA)
- Nonconforming products are identified, segregated, and dispositioned (rework / use-as-is with approval / scrap).
- Corrective actions address root cause; preventive actions reduce recurrence risk.
- Customer notification is performed when required by contract/ITP.
9) Packaging, Preservation & Shipping
- Protection: end caps, wrapping, moisture control (as required).
- Marking: heat number/lot, size, grade, standard, PO reference.
- Packing: bundles / wooden cases per size and transportation mode.
- Documents: packing list, MTC, inspection records (as agreed).
10) Document Control & Record Retention
- Documents are reviewed and issued with controlled revision.
- Records are retained for an agreed period (project requirement / internal policy).
11) Responsibilities (RACI Overview)
The table below is a practical role map. Actual titles may vary by project and factory; responsibilities remain consistent.
| Activity |
Sales |
Production |
QA/QC |
Management |
| Contract review / RFQ confirmation | R | C | C | A |
| Supplier / raw material approval | C | R | A | C |
| In-process inspection | I | R | A | I |
| NDT planning & execution | I | C | A/R | I |
| Release, packing & shipment docs | C | R | A | I |
| Nonconformance disposition | I | R | A | C |
12) Inspection & Test Plan (ITP) — Template
Use this template for customer projects. Add/Remove items per PO/spec and indicate Hold/Witness points.
| Stage |
Inspection / Test |
Standard / Method |
Acceptance |
Record |
| Incoming | MTC check / Heat No. verification | PO / EN 10204 | Match required grade | Incoming log |
| In-process | OD/WT measurement | ASTM tolerance | Within tolerance | Dimensional sheet |
| NDT | Eddy Current (ET/ECT) | Applicable ASTM | Per criteria | ET report |
| Pressure | Hydro / Pneumatic (if required) | PO / ITP | No leakage | Test cert |
| Final | Visual + marking check | Work instruction | Correct marking | Final checklist |
| Packing | Caps / moisture / crate | Packing spec | Damage-free | Packing list |
13) Forms & Checklists (Appendix)
The following blank forms can be used for internal control or provided to customers upon request.
A) Incoming Material Verification Checklist
| PO / Project | |
| Supplier / Mill | |
| Grade / Standard | |
| Heat No. / Lot | |
| MTC received | □ Yes □ No |
| PMI required | □ Yes □ No |
| Result / Remarks | |
B) Final Inspection & Packing Checklist
| Item | OK / NG / Remark |
| OD / WT / Length verified | |
| Visual condition acceptable | |
| Marking / labels correct (Heat No., grade, size) | |
| End caps installed | |
| Packaging type per PO (bundle / case) | |
| Documents attached (MTC, reports, packing list) | |
14) Revision History
| Revision |
Date |
Description |
| 2026-04 | 2026-04-07 | Initial website edition for QA Manual posting (ASEA METAL). |
Appendix Pack (Extended)
The following pages are practical templates and check sheets used for stainless tube production, inspection, packing, and document packages.
Note: Fill-in areas are intentionally large to support printing and handwriting.
15) Incoming Material Log (Blank)
| Date |
Supplier |
Heat No. |
Grade |
Size |
Qty |
Remark |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
| | | | | | |
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16) In-Process Dimensional Check Sheet (Blank)
Use for OD/WT/Length sampling during sizing/cutting/finishing.
| Heat / Lot |
Size |
Spec Tol. |
Machine/Line |
Inspector / Date |
| | | | |
| No. |
OD (mm) |
WT (mm) |
Length (mm) |
Ovality |
Remark |
| 1 | | | | | |
| 2 | | | | | |
| 3 | | | | | |
| 4 | | | | | |
| 5 | | | | | |
| 6 | | | | | |
| 7 | | | | | |
| 8 | | | | | |
| 9 | | | | | |
| 10 | | | | | |
17) U-Bend Tube Process Checklist (Blank)
Recommended checkpoints: bending radius, springback, wrinkle, ovality, end squareness, and marking preservation.
| Project/PO |
Heat/Lot |
Size |
Bend Radius |
Operator / Date |
| | | | |
| Check Item |
OK |
NG |
Remark |
| Visual after bending (wrinkle / dent / scratch) | | | |
| Ovality at bend | | | |
| Leg length / center distance | | | |
| End condition / squareness | | | |
| Marking / traceability maintained | | | |
| Cleaning / caps installed | | | |
| Final packing condition | | | |
18) NDT Record Sheet (ET/ECT/UT) (Blank)
| Method |
Procedure/Std. |
Sensitivity / Setting |
Operator / Date |
| | | |
| Tube No. |
Indication |
Disposition |
Retest |
Remark |
| 1 | | | | |
| 2 | | | | |
| 3 | | | | |
| 4 | | | | |
| 5 | | | | |
| 6 | | | | |
| 7 | | | | |
| 8 | | | | |
| 9 | | | | |
| 10 | | | | |
19) Nonconformance Report (NCR) (Blank)
Description of nonconformance
Immediate action / segregation
Disposition (□ Rework □ Use-as-is □ Scrap □ Return)
Root cause / corrective action
20) Final Documentation Package Checklist (Blank)
Typical pack: MTC, dimensional report, NDT reports, pressure test certificate (if required), packing list, photos (if required), EN 10204 3.1/3.2 (if required).
| Document / Record | Included | Remark |
| MTC / MTR (chemical + mechanical) | □ | |
| Dimensional inspection report | □ | |
| Eddy Current / UT report | □ | |
| Pressure test certificate (if required) | □ | |
| Final inspection checklist | □ | |
| Packing list / marking list | □ | |
| Customer / TPI witness records (if any) | □ | |
| Other | □ | |
21) Calibration Status Log (Blank)
Track measuring equipment: micrometers, vernier calipers, thickness gauges, etc.
| Equipment ID |
Description |
Range |
Last Cal. |
Due |
Status/Remark |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
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22) Visual Inspection Report (Blank)
Acceptance criteria (summary)
23) Packing Standard Checklist (Blank)
Use for bundle/case packing verification before shipment.
| Item |
OK |
NG |
Remark |
| End caps installed on all tubes | | | |
| Tube surface protected (wrapping / separators) | | | |
| Moisture control applied (desiccant / VCI if required) | | | |
| Correct labels and marking list attached | | | |
| Wooden case integrity (if applicable) | | | |
| Strapping and corner protection | | | |
| Photos taken (if required) | | | |
| Final count and packing list verified | | | |
24) Heat Treatment Record (Blank)
| Furnace ID |
Charge No. |
Grade |
Temp/Time |
Operator / Date |
| | | | |
25) CAPA (Corrective & Preventive Action) Form (Blank)
Root cause analysis (5-Why / Fishbone)
Preventive action / recurrence prevention
26) Training Record (Blank)
| Employee |
Topic |
Date |
Trainer |
Result / Signature |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
| | | | |
27) Internal Audit Checklist (Blank)
| Audit Item | OK | NG | Remark |
| Document control / revision availability | | | |
| Traceability: heat/lot marking maintained | | | |
| Calibration status within validity | | | |
| NCR/CAPA process applied and closed | | | |
| Packing and preservation per spec | | | |
| Records complete and retrievable | | | |
| Customer requirements (ITP) implemented | | | |
| Training records current for operators/inspectors | | | |
28) Supplier Evaluation Record (Blank)
Use for mills, processors, NDT subcontractors, and packing suppliers.
| Supplier |
Scope |
On-time |
Quality |
Docs |
Remark |
| | | | | |
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