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31 articles· Buyer guide

Pipe fittings factory auditBuyer guide
Buyer guide

Sourcing Pipe Fittings from China: Audit & RFQ Checklist

First-time China sourcing has two failure modes: trading-companies disguised as factories, and certifications that look impressive but mean nothing. Here is the desktop screening, audit, and RFQ template that filters them out.

May 14, 202614 min readHebei Haihao Group
ASME B16.9 pre-shipment inspectionBuyer guide
Buyer guide

ASME B16.9 Pre-Shipment Inspection: Dimensional Checklist

Pre-shipment inspection is your last cheap chance to reject a defect. Here is the dimensional limits, visual checks, NDT spot-checks, marking verification, and document packet to walk down before the container leaves the port.

May 13, 202612 min readHebei Haihao Group