Position: Home > FAQ

Q: What information do I need to provide for a quotation?

Q:How do I make an order?

Q: What is the typical lead time?

Q: What is the minimum order quantity (MOQ)?

Q: What payment terms do you accept?

Q: Do you sell through distributors or direct?

Q: Can I request custom materials or non-standard designs?

Q: What packaging and shipping options are available?

Q: What certifications does Yuming hold?

Q: What is the difference between API 600, API 602, and API 6D?

Q: Are your valves 100% tested before shipment?

Q: What quality control measures do you have?

Q: Which valves are recommended for oil & gas pipelines?

Q: What valves should I use for a power plant?

Q: Which valves are suitable for water supply and HVAC?

Q: What valves are used in petrochemical and refining?

Q: Which valves work in mining and slurry applications?

Q: Why is my valve leaking at the stem?

Q: Why won't my gate valve close tightly?

Q: My ball valve is hard to turn. What should I check?

Q: Why is my safety valve weeping below set pressure?

Q: Can a check valve be installed in vertical piping?

Q: Can I use a gate valve or ball valve for flow regulation?

Q: What should I do before installing a new valve?

How long does your company produce valves?