Every single raw material is tested using spectrographic analysis before production to ensure chemical composition accuracy and material traceability.
Double Quality Inspection
All products undergo two rounds of inspection – first after machining, and again before packing – covering both dimensions and surface appearance.
Attention to Detail
We follow strict tolerance standards and pay close attention to surface finish, flange faces, and thread accuracy to ensure perfect fit and performance.
Certified Quality System
Our production complies with ISO 9001 standards, and we can provide EN10204 3.1 certificates, dimensional reports, and third-party inspection upon request.
Stable & Reliable Raw Materials
We use stainless steel sourced from Tsingshan Group, ensuring consistent quality and long-term performance under demanding conditions.
Quality Inspection Stages
Our quality inspection is integrated into every stage of production to ensure precision and consistency
Raw Material Inspection
Spectrographic testing of every material batch.Verify chemical composition and material grade.Material traceability ensured.
Forging Inspection
Visual inspection for surface defects (cracks, folds, etc.).Dimensional pre-check after forging.Marking and traceability tagging.
Machining Inspection
In-process measurement of critical dimensions (OD, ID, thickness, bolt holes).Tolerance control according to international flange standards.Surface roughness checked (e.g., flange face finish).
Final Inspection
100% dimensional check before packing. Appearance inspection (surface finish, cleanliness, burrs). Random sampling for thread accuracy (if applicable).
Pre-Shipment Inspection
Visual and dimensional check for packing and labeling. Third-party or customer inspection welcome. Final inspection report and certification preparation (EN10204 3.1, etc.).
Warranty Policy
We offer a 12-month warranty from the shipment date. During this period, any product found to have material or manufacturing defects will be replaced or refunded after verification.
