OpeningYour drawing defines the part. We make it exactly to that drawing. Every profile is verified before shipment. No surprises, no tolerance drift.We are BQUQ, a precision manuf
OpeningYour drawing defines the part. We make it exactly to that drawing. Every profile is verified before shipment. No surprises, no tolerance drift.We are BQUQ, a precision manufacturing factory in
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
Your drawing defines the part. We make it exactly to that drawing. Every profile is verified before shipment. No surprises, no tolerance drift.
We are BQUQ, a precision manufacturing factory in Dongguan, China. Our heat sink line runs alongside CNC machining, metal stamping, and springs. One factory, one quality system, 20 years of engineering experience.
At a glance: Extrusion tolerance ±0.05 mm on critical fins. Machining tolerance ±0.01 mm where required. Lead time 10–15 working days for standard profiles. No MOQ. ISO 9001:2015 certified. Material certs included with every batch.
Specifications
Parameter
Value
Material
Aluminum 6063-T5, 6061-T6, 6060, or per your spec
Extrusion tolerance
±0.05 mm on fin thickness and spacing
Machining tolerance
±0.01 mm on CNC-machined surfaces
Surface roughness
Ra 0.8 µm machined, Ra 1.6 µm as-extruded
Fin thickness
0.8 mm minimum, up to 10 mm
Max profile length
6000 mm as-extruded, cut to your length
Max cross-section
250 mm x 250 mm
Surface finish
Anodizing (clear, black, or custom), powder coating, chromate conversion
Heat treatment
T5 or T6, verified by hardness test
Inspection
CMM, optical comparator, hardness tester, conductivity meter
Batch size
1 piece to 100,000+ pieces
Lead time
10–15 working days for extrusion, 3–5 days for CNC finishing
Certifications
ISO 9001:2015, material mill certs, RoHS/REACH on request
Three reasons buyers send us their drawings
1. Batch-traceable quality. Every extrusion lot gets a unique heat number. We track it from billet to finished part. If a problem appears in your assembly line, we trace it to the exact batch and correct it. No guesswork.
2. Inspection report per batch. You get a full dimensional report with every shipment. Fin height, spacing, flatness, straightness, twist — all measured and recorded. We use CMM and optical comparators, not calipers and eyeballs. The report is yours to keep, even for a single prototype.
3. One factory for CNC + stamping + springs + heat sink. Your heat sink often needs a stamped clip, a spring, or a CNC-machined base. Most factories outsource these. We don't. One purchase order, one quality standard, one shipping date. Fewer vendors, fewer delays, fewer arguments.
Where these parts are used
Our aluminum extrusion heat sink profiles go into power electronics, LED lighting, and industrial controls. Specific applications:
IGBT modules and power semiconductors — natural convection and forced air cooling
LED drivers and high-bay lighting fixtures — extruded fin arrays with black anodize for emissivity
Motor controllers and variable frequency drives — compact profiles with mounting channels
Telecommunication base stations — outdoor-rated profiles with corrosion-resistant finish
Medical power supplies — tight tolerance profiles for sealed enclosures
Automotive battery chargers — vibration-resistant designs with threaded inserts
If your application runs hot, we have a profile for it. If we don't, we'll design one with you.
Q: What is your MOQ?
A: No MOQ. We run one piece for prototyping and 100,000 pieces for production. Same tooling, same quality system. Prototype pricing is higher per piece, but you pay only for what you order.
Q: How do you control tolerance and quality?
A: We measure every critical dimension on every batch. Extrusion profiles get a first-article inspection report before production. Machined features get 100% inspection on critical dimensions. Our QC team signs off before anything ships. You get the report with the goods.
Q: What is your lead time?
A: Standard extrusion profiles ship in 10–15 working days. CNC machining adds 3–5 days. Surface treatment (anodizing, powder coating) adds 3–7 days depending on the finish. Rush orders are possible — call us and we'll tell you honestly if we can hit your date.
Q: Do you provide material certificates?
A: Yes. Every batch comes with a mill certificate showing alloy, temper, and chemical composition. If you need third-party testing (SGS, TÜV), we coordinate it at cost. No markup.
Send your drawing
Send us your PDF, STEP, or IGES file. We reply with a firm quote in 12 hours. Price, lead time, and delivery terms — all in writing. No vague estimates.
Email: sc@bquq.com
WhatsApp: +86 13713157787
Custom heat sinks, precision manufacturing, made in China — with the paperwork to prove it. Your drawing is the starting point. Let's talk.
