Onsite Check Verified Supplier
Verified through an onsite factory check, confirming both legal entity and production capability.
Jincheng Tools
Quality & Service
Quality as the foundation, reputation as our life
Our Quality Commitment
Quality as the foundation, reputation as our life
From diamond selection and matrix batching to hot-press sintering, welding and final inspection, every bit and segment carries a traceable process record. We believe consistent quality comes from consistent process, not from chance.
Our Quality Commitment
From diamond selection and matrix batching to hot-press sintering, welding and final inspection, every bit and segment carries a traceable process record. We believe consistent quality comes from consistent process, not from chance.
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01
Incoming Material Inspection
Diamond grit size, concentration and metal powder purity are verified per batch; non-conforming material is rejected outright.
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02
Formula & Process Validation
The diamond formula is set per formation, with pilot batches and trial drilling validated before mass production.
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03
In-Process Inspection
Sintering temperature curves, matrix hardness and dimensional tolerance are sampled on line; production stops immediately on any deviation.
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04
Pre-Shipment Inspection
Appearance, weld strength, diamond exposure and critical dimensions are fully inspected, with a test record shipped alongside.
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05
Packing & Logistics
Wooden cases or custom packaging; FOB, CFR, CIF and EXW supported, with Guangzhou as the nearest port.
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06
After-Sales Technical Support
Selection advice, formula optimisation and troubleshooting, with an average response within 10 hours.
Certifications & Compliance
API Standard Manufacturing
PDC and tricone drill bits are manufactured to API standard for oil, gas and mining projects.
OEM / ODM Contract Manufacturing
Custom manufacturing from drawings or samples, private labelling and packaging design.
Flexible Payment Terms
T/T, L/C, D/P D/A, Western Union, PayPal and credit card accepted; settlement in USD, EUR or HKD.
Why Choose Jincheng Tools
From formula design and sintering to final inspection — fully in-house.
First-Level Formula
Diamond concentration, grit size and matrix hardness are tuned per formation, balancing sharpness against tool life.
In-House 20,000 m² Factory
Powder mixing, hot-press sintering, laser welding and final inspection all happen in-house, keeping lead time and quality under control.
Best Value at Equal Quality
"Same quality, best price; same price, best quality" — the pricing principle we commit to.
OEM / ODM Customisation
Custom manufacturing from drawings or samples, private labelling and packaging design; our trade team works in English and Chinese.
Total Quality Control
Strict total quality control: diamond exposure, weld strength and dimensional tolerance are batch-tested before shipment.
Engineer Selection Support
Send us your formation data and rig model — our engineers will recommend the right specification and formula, usually within 10 hours.
Frequently Asked Questions
The questions overseas buyers ask most — if your answer isn't here, just contact us.
Are you a factory or a trading company?
We are the manufacturer, based in Hunan Province, China, making synthetic diamond drill bits and diamond segments since 2009. The factory covers about 20,000 m² with three production lines and an annual segment capacity of 5 million sets, and we export directly to overseas buyers.
Can you do OEM / ODM according to our drawings or brand?
Yes. We support OEM, ODM and buyer-label production: size, diamond formula, matrix hardness and packaging can all be customised from drawings or samples, with samples approved before mass production.
What products do you mainly manufacture, and which sizes are standard?
Our main lines are diamond geological core drill bits (electroplated, hot-pressed and impregnated), diamond segments, PDC bits and tricone bits. Common coring sizes cover AQ, BQ, NQ, HQ and PQ series, and other diameters can be made to order.
What is your MOQ and how do I get a quotation?
MOQ depends on the product line — typically from 10 sets for standard sizes and negotiable for custom items. Prices vary with size, diamond formula and quantity, so send the specification, quantity and destination through the inquiry form or e-mail and we will normally reply within 10 hours.
What is the lead time, and which trade terms and port do you use?
Standard orders ship in around 10 days, confirmed at order time. We support FOB, CFR, CIF and EXW terms; the usual port of loading is Guangzhou, and other arrangements can be made on request.
Which payment methods do you accept, and how is quality guaranteed?
We accept T/T, L/C, D/P D/A, Western Union, PayPal and credit card. Products are sampled batch by batch with dimensional and visual inspection before shipment, and technical support is available; for any quality issue, send photos and batch details and we will follow up.
Need a custom specification or bulk quotation?
Tell us your bit diameter, rock hardness and working conditions — our engineers will recommend the optimal formula for you.