Every batch is inspected before shipment — dimension check, surface inspection, hydrostatic and ultrasonic testing. Inspection records are provided with every shipment, so every pipe, flange and fitting can be traced back to its material and production batch.
Our laboratory equipment used for quality control:
| Equipment | Purpose |
|---|---|
| Spectrometer | Chemical composition analysis |
| Caliper / tape measure | Dimension check |
| Ultrasonic thickness gauge | Wall thickness measurement |
| Ultrasonic flaw detector | Internal defect testing of pipe and fittings |
| Magnetic particle testing | Surface defect testing |
| Hardness tester | Hardness check |
| Universal testing machine | Tensile testing |
| Hydrostatic tester | Pressure testing |
Official registration documents. Hebei J&S Pipe Fittings Co., Ltd is a registered manufacturer with self-operated import and export rights, filed with Cangzhou Customs.
Our business license is public record. Other qualification documents are available to customers on request.