Contact
Questions about a calculation, a sourcing inquiry, or feedback on the tools — use the form below and Kevin Wang will respond within one business day (China Standard Time, UTC+8).
Send a Message
Use the inquiry form to describe your question or specification. Include the pipe size, schedule, material, and standard where relevant — it helps give you a faster, more accurate reply.
Open Inquiry Form →What We Can Help With
- ·Technical questions about ASME B16.5, B16.9, or B36.10M standards
- ·Sourcing inquiries for flanges and pipe fittings from Mengcun / Cangzhou, Hebei
- ·Calculation errors or discrepancies you have found in the tools
- ·Suggestions for new calculators or chart pages
Response Time
Kevin reads every message and typically responds within one business day. PVF Calculator is based in Cangzhou, Hebei, China (UTC+8). Messages sent during evenings or weekends in Asia may be answered the following business day in your time zone.