Internationally recognized certifications that verify our quality management system, product standards, and manufacturing capabilities.
Certificate Holder: ZHEJIANG JIAJI FORGING INDUSTRY CO., LTD.
Issuing Body: TUV SUD Industrie Service GmbH
Notified Body Number: NB0036
Scope: Manufacture of forged steel flanges and pipe fittings for industrial applications
Standards Covered: ISO 9001:2015 Quality Management Systems
What this means for you: Our quality management system has been independently audited and verified by TUV SUD - one of Europe's most respected certification bodies. This ensures consistent product quality, process control, and continuous improvement.
Standard: EN AD2000-Merkblatt / 97/23/EC Pressure Equipment Directive
Issuing Body: TUV SUD Industrie Service GmbH
Material Coverage:
Product Range: Forged flanges manufactured according to EN1092-1
What this means for you: Our flanges are approved for use in pressure equipment sold in the European Union. PED certification is essential for flanges used in European oil, gas, chemical, and process industry projects.
Beyond certifications, our quality assurance covers every aspect of the manufacturing and delivery process.
Every raw material heat/lot is recorded with its mill test certificate (MTC). Traceability is maintained from the steel mill through forging, heat treatment, machining, and final inspection. Each product is marked with heat number, material grade, and pressure rating.
Every batch of products undergoes two rounds of inspection before shipment: (1) In-process inspection during machining, and (2) Final inspection before packaging. Inspection reports cover dimensions, surface finish, marking, and pressure tests.
Our QC process follows a strict multi-stage protocol:
PMI testing, chemistry verification, dimension check, visual inspection
Temperature records, hardness testing, microstructure check
CNC dimension verification, surface finish inspection, marking check
100% visual + dimensional check, UT on critical items, pressure test
Innovation drives JIAJI's competitive edge. Our R&D team holds 20+ proprietary patents in flange connection technology, forging processes, and quality control methods.
Flange connection technology
Forging process improvements
Quality testing methods
Product design innovations
JIAJI FORGING allocates not less than 5% of annual revenue to research and development, ensuring continuous improvement in product quality and manufacturing efficiency.
Our in-house engineering team works closely with customers on custom forging solutions, from technical review of drawings to prototype development and production.
Contact our Shanghai team to request copies of our certificates, factory audit reports, or to arrange a video call factory tour.
