Common Questions
Are you factory or trading company?
We are a manufacturer specializing in the production and sales of cutting tools for machining primarily used in turning, milling, drilling, and threading applications. We own three factories located in Zhuzhou City, Hunan Province, which is the largest cemented carbide industrial production base in China.
Does Zhuzhou Jinzuan provide free samples for carbide tools?
Yes, Zhuzhou Jinzuan offers free samples for all our carbide products (including turning inserts, milling inserts, and solid carbide end mills). Customers only need to bear the shipping cost, and we can send samples within 3 working days after confirming your requirement. This helps you test product performance (e.g., hardness, precision) before bulk orders.
Can you customize carbide tools according to our drawings?
Absolutely. Zhuzhou Jinzuan support OEM/ODM customization for all Jinzuan carbide tools. You just need to provide detailed drawings (e.g., size, coating, cutting edge design) or specific machining requirements (e.g., for stainless steel, HRC65 material). Our R&D team will confirm the feasibility within 24 hours, and the lead time for customized products is 7-15 working days.
What kind of after-sales service and warranty do you provide?
All Jinzuan carbide tools come with a 1-year warranty. If there are quality issues (e.g., premature wear, dimensional deviation) caused by product itself, we provide free replacement or refund. Our after-sales team responds within 24 hours to solve your problems (e.g., machining parameter adjustment, product maintenance tips), ensuring your production is not affected.
What is the minimum order quantity (MOQ) and delivery time?
For standard carbide products (e.g., Jinzuan WNMG0804 turning inserts, 4-flute HRC55 end mills), the MOQ is 10 pieces, which is friendly for small and medium-sized machining enterprises. For bulk orders (≥500 pieces), we offer factory-direct wholesale prices. The delivery time is 3-5 working days for in-stock products, and 15-35 working days for customized or bulk orders (DHL, FedEx, UPS, TNT).
Payments & Shipping
What payment terms do you accept?
We accept T/T (Telegraphic Transfer), L/C at sight, Western Union, MoneyGram, and PayPal. For bulk orders, 30% advance deposit and 70% balance before shipment is standard. L/C is available for large orders, while Western Union, MoneyGram, and PayPal are preferred for samples and small trial orders.
How long does production & delivery take?
Standard samples: 5-10 working days. Bulk orders: 15–35 working days depending on order quantity and tool specifications. Exact lead time will be confirmed in the formal quotation.
What shipping methods do you provide?
We support international express (DHL, FedEx, UPS, TNT) for samples and small orders, air freight for urgent orders, and sea freight for full-container bulk orders. We can also ship to your designated forwarder.
Who covers the shipping cost?
Sample orders: freight is usually paid by the buyer. Bulk orders: shipping terms are negotiable, including FOB, CIF, CNF, and DDU/DAP based on your request.
Do you provide shipping documents?
Yes, we provide a full set of shipping documents including commercial invoice, packing list, bill of lading, certificate of origin, and material test certificates as required.
Carbide FAQS
What are coated carbide inserts?
Coated carbide inserts have a layer of another material, such as titanium or aluminum oxide, to enhance their hardness and heat resistance.
Can carbide inserts be used for all materials?
While carbide inserts are versatile, they are not suitable for all materials. They work best with hard materials like steel and cast iron.
Can carbide inserts be sharpened?
Yes, carbide inserts can be sharpened, but it requires a special grinding wheel made of silicon carbide or diamond.
How do I choose the right carbide insert?
The choice of carbide insert depends on the material you’re working with, the type of cut you’re making, and the machine you’re using.
Can carbide inserts break?
While carbide inserts are extremely durable, they can break under excessive force or if used improperly.
How do I maintain my carbide inserts?
Regular cleaning and proper storage can help maintain the longevity of your carbide inserts. Also, avoid using them on inappropriate materials or at incorrect speeds.
