Quality Assurance / 质量保证
Quality is not a department — it’s a process embedded in every step from raw material receipt to container loading. HEBEI PENGRUN operates an integrated QA / QC system certified under ISO 9001 / 14001 / 45001, with 100% inspection coverage on every shipment before release.
We welcome third-party inspection agencies (SGS, BV, TÜV, Lloyd’s, ABS, DNV, CCS and others) at any stage of production — free of charge. Inspection booking can be arranged with 2-3 working days’ notice.
Inspection Capabilities / 检测能力
In-house laboratories cover six major inspection categories. Most tests are performed on the shop floor; chemical and destructive tests are handled in our in-house metallurgical lab.
Dimensional Inspection / 尺寸检测
Every dimension verified against the drawing. 100% coverage on critical dimensions.
- CMM (Coordinate Measuring Machines)
- OD gauges (digital & vernier)
- Wall thickness ultrasonic gauges
- Thread gauges per ASME B1.20.1 / B1.20.3
- Surface roughness testers (Ra)
- Bore & concentricity measurements
Chemical Analysis / 化学分析
Positive Material Identification (PMI) to confirm alloy composition matches MTC.
- XRF spectrometer (handheld PMI gun)
- OES spectrometer (in-house metallurgical lab)
- Carbon / sulfur analyzer (CS)
- Verification against ASTM / EN material standards
Mechanical Properties / 机械性能
Verifies tensile, impact, hardness meet the standard.
- Tensile testing (room temp & elevated)
- Charpy impact testing (-46°C where required)
- Hardness (Brinell, Rockwell, Vickers)
- Per ASTM A370 / EN ISO 6892 / ISO 148 / ISO 6506
Hydrostatic Test / 水压试验
Pressure tests on completed fittings to verify leak-tightness at design pressure.
- Standard: 1.5 × design pressure × 5-10 min
- Per ASME B16.9 / B16.5 / EN 10253
- Test water typically potable + corrosion inhibitor
- Test report included with shipment
Non-Destructive Testing / 无损检测
Surface and subsurface defect detection without damaging the product.
- UT (Ultrasonic Testing)
- RT (Radiographic / X-ray)
- MT (Magnetic Particle)
- PT (Liquid Penetrant / Dye)
- Performed by certified Level II / III inspectors
Heat Treatment Verification / 热处理验证
Confirms correct hardness profile and microstructure after normalizing, quenching, or solution treatment.
- Hardness survey across cross-section
- Microstructure examination (where specified)
- Carbide precipitation check (for stainless)
Documentation / 出厂文件
Every shipment includes a complete documentation package. Reports are signed and stamped by our QA manager; 3rd-party-signed reports (3.2) available on request.
Third-Party Inspection / 第三方检验合作
Inspection cooperation is part of our standard export service. We coordinate with third-party inspection agencies at any production stage — including before shipment, during production, or upon completion. Our CCS Factory Approval (DN50-DN600) confirms regular TPI cooperation is part of our standard workflow. Customer’s nominated inspection agency is always welcomed.
Booking typically requires 3-5 working days’ advance notice for non-urgent orders; rush orders can be arranged case-by-case. TPI fees are paid directly to the inspection agency by the client; factory coordination is included in the order at no charge.
Need test reports or third-party inspection?
Send your specification, drawing, or RFQ — we will include relevant test reports with every quote.
Request Test Reports →