SAMR business scope reads extrusion / manufacturing — not only 'sales' or 'trade'.
Controls its own die shop, extrusion press and surface-treatment line.
Can state press tonnage and show in-house anodizing / coating evidence.
Issues a mill test certificate for the exact alloy & temper you order.

Common risks & how to mitigate

Batch-to-batch quality drift. Specify alloy, temper, coating thickness & tolerance in the PO; require pre-shipment inspection; keep a sealed reference sample.
Lead-time slippage on a custom die. A new die adds production lead time — confirm per order. Lock milestones in the proforma invoice and buffer the first run.
Payment & identity fraud. Verify the company on SAMR before paying; use staged payments (deposit, balance vs inspection / B-L); consider a third-party audit (SGS, BV).

Why price, MOQ and lead time are not fixed here: they move with alloy, die, finish, order volume and the day's mill price. Confirm them with shortlisted suppliers against the actual requirement.

Prepare your specification — profile shapes, alloys, finishes & custom dies

SHAPE × SPEC MATRIX

Standard extrusion shapes — typical spec ranges

These ranges are indicative across Chinese mills with public catalogues. Use them to scope an inquiry; confirm the final spec range with the supplier for your alloy and die.

Shape	Typical spec range	Common applications
T-slot profile	20×20–80×80 mm typical	Industrial framing, machine guarding, assembly jigs
Round tube	OD 6–200 mm, wall 1–10 mm typical	Railing, conduit, structural support, hydraulics
Rectangular tube	20×40–100×200 mm, wall 1.5–6 mm typical	Window/door frames, mullions, signage
Angle	Leg 10–100 mm, thickness 1.5–8 mm typical	Edging, brackets, structural reinforcement
Channel (U / C)	Web 15–120 mm, flange 10–60 mm typical	Glazing channels, slide tracks, frames
Flat bar	Width 10–300 mm, thickness 2–25 mm typical	Mounting strips, busbars, edge protection
Heat-sink profile	Fin density 1–4 mm pitch, base 3–10 mm typical	LED, power electronics, inverters, telecom
Custom profile	Die-driven; circumscribing circle ≤ ~250 mm typical	Window/door systems, curtain-wall mullions, OEM

Spec ranges are typical across mills with public product catalogues; individual mills publish tighter or wider envelopes. Confirm the achievable cross-section, tolerance, and length with the supplier before tooling.

ALLOY × TEMPER

6061-T6 / 6063-T5 / 6005A-T6 — when to pick which

Three alloy/temper combinations cover most aluminum extrusion sourcing decisions. Use this table to narrow the shortlist; then use the alloy picker for a guided decision based on your application.

Alloy / Temper	Strength	Corrosion	Extrudability	Typical use
6061-T6	High — 276 MPa UTS typical	Good (lower than 6063)	Moderate (slower extrusion rate)	Structural framing, machined enclosures, marine
6063-T5	Moderate — 186 MPa UTS typical	Excellent (best of the three)	Excellent (fastest, finest finish)	Window / door profiles, architectural, anodized parts
6005A-T6	High — 260 MPa UTS typical	Very good	Good (between 6061 and 6063)	Truck chassis, solar racking, structural where weldability matters

Open alloy picker →

SURFACE FINISH

Mill finish, anodized, powder coat, PVDF, wood-grain

Mill finish

Extruded surface, no post-treatment. Lowest cost, used where surface isn't visible (industrial profiles, internal framing).

Anodized

Electrochemical oxide layer. Standard for architectural profiles; 6063-T5 takes anodizing best. Available in clear, champagne, bronze, black.

Powder coat

Thermoset polymer applied dry, baked. RAL-coded colour range, widely available across Chinese extruders, lower cost than PVDF.

PVDF coating

Higher-performance fluoropolymer paint. Required for exterior architectural use in many markets (curtain-wall facades). Confirm Kynar/Hylar resin spec with supplier.

Wood-grain transfer

Heat-transfer film over powder coat or anodized base. Common in window/door profiles for residential and hospitality applications in Asian markets.

CUSTOM EXTRUSION

Open a die: cost, MOQ, lead time, process

Custom dies open up profile families that don't exist in standard catalogues. Die cost, MOQ and lead time depend on cross-section complexity, alloy, finish and order volume — they aren't fixed list values, so confirm each directly with the mill.

Die cost

Supplier confirmation

Indicative

MOQ per profile

Supplier confirmation

Typical

First run lead time

Supplier confirmation

Indicative

Repeat run lead time

Supplier confirmation

Indicative

Custom extrusion process — 4 steps

Cross-section + die design: Share DWG / DXF or a scaled sketch. Mill engineers review for extrudability; circumscribing circle, wall ratio, and tongue/recess geometry drive feasibility.
Die tooling + first-article trial: Die is cut, trialled, and sampled. Sample cross-section is dimensionally inspected — confirm before committing the production run.
Production run + surface treatment: Extruded → aged to temper → cut to length → anodized / powder / PVDF as specified. Inspection records (MTC, dimensional report) follow the lot.
Packaging + export documentation: Profile bundles wrapped, foam-lined or PVC-sleeved per agreement. Commercial invoice, packing list, MTC, COO, and any required certification ship with the container.

Die cost, MOQ, and lead time vary materially by mill, profile complexity, and surface treatment. Confirm with the supplier before placing an order.

COST + LANDED COST

From China FOB to your destination port

Extrusion pricing tracks LME / SHFE aluminum prices plus a mill conversion premium (USD/kg), then layers in ocean freight, anti-dumping (where applicable), MFN duty, VAT, and FX. The landed-cost calculator runs the full breakdown for a default 25 t / 6063 extrusion / Shanghai → HCMC CIF; adjust to your route, alloy, and incoterm.

Estimate landed cost →

Supplier outreach

Request introductions to shortlisted suppliers

Select suppliers above and send one specification. We organize the requirement and request introductions to matching SAMR-registered mills. Pricing and terms are confirmed by the mills, not promised here.

Start an RFQ →

Common buyer questions

What's the minimum order quantity for an aluminum extrusion?

MOQ varies by mill, by profile, and by whether the die is in-catalogue or custom — for a custom die it is set so the mill recovers its tooling investment. We don't publish a fixed number because it tracks each mill's volume strategy, not a single rule. Confirm the exact MOQ per profile with the shortlisted supplier.

How much does a custom die cost?

Die cost is driven by cross-section complexity, circumscribing circle, and number of cavities, and some mills will amortise the die fee into the unit price when the order volume justifies it. It's quoted per project rather than a public list price, so confirm it with the shortlisted supplier.

What's a typical lead time?

Lead time depends on die approval, surface treatment (PVDF or specialty anodizing), certification, and ocean freight to your port — each order is scheduled differently. It's quoted per order rather than a fixed figure, so confirm the timeline directly with the mill.

What certifications should I ask for?

Standard request set: Mill Test Certificate (chemistry + mechanical), ISO 9001 quality management, anodizing certification (e.g. Qualanod) for architectural profiles, and a Certificate of Origin if you're claiming preferential duty. For curtain-wall systems, ask about AAMA / EN 12020-2 / GB/T 5237 compliance per your market.

What payment terms are typical?

First-time orders are commonly 30% T/T deposit on PO, 70% T/T against B/L copy or LC at sight. Established relationships move toward 30/70 with longer credit. Avoid 100% prepay before sample approval; use LC if you can't confirm the mill via independent identity evidence.

Do mills send samples?

Most mills will cut a 0.3–1 m length sample of an in-catalogue profile, free or for a small fee plus freight. Custom-die samples come from the die trial run after tooling — confirm the trial sampling protocol in your PO.

Two supplier category indexes

Industrial profile mills

Mills focused on industrial / OEM / T-slot extrusion.

Browse category →

Window & door profile mills

Mills focused on window / door / curtain-wall extrusion families.

Browse category →

RELATED EDITORIAL

Buyer playbooks for adjacent decisions

PLAYBOOK

6061 vs 6063 vs 6005A — a Chinese mill's perspective →

PLAYBOOK

Anti-dumping duties & tariffs — 2026 importer's guide →

PLAYBOOK

Custom extrusion dies — cost, MOQ & lead time →

RELATED RANKINGS

See how these mills are scored

RANKING

How to read this supplier data — and what it does not prove

Product focus comes from reviewed supplier catalogues. Established year and registered capital come from China's public business registry (USCC / SAMR). Capacity is self-published by the mill; export signals are inferred from registered business scope and website evidence — neither is an independent audit or a supplier-quality score. OFAC screening comes from the U.S. SDN list; UFLPA geographic risk from registered location. Product records and photos are scraped from each mill's official site, so coverage is uneven. We never publish supplier contact details, and MOQ, lead time and price must be confirmed directly with shortlisted suppliers. Product data last reviewed May 22, 2026. Read methodology →

Listings on this page are based on publicly available official-site product evidence and SAMR registry data. We do not certify factory capability, audit production, or guarantee delivery. Confirm specifications, MOQ, certifications, and lead time directly with each supplier before placing orders. Pricing and landed-cost figures are estimates based on public benchmarks (LME, SHFE, Changjiang, Freightos FBX, customs duty schedules) and are not binding.

China Aluminum Extrusion Profile Suppliers

How to vet a Chinese aluminum supplier

Tell a real mill from a trading company

Common risks & how to mitigate

Prepare your specification — profile shapes, alloys, finishes & custom dies

Standard extrusion shapes — typical spec ranges

6061-T6 / 6063-T5 / 6005A-T6 — when to pick which

Mill finish, anodized, powder coat, PVDF, wood-grain

Mill finish

Anodized

Powder coat

PVDF coating

Wood-grain transfer

Open a die: cost, MOQ, lead time, process

Custom extrusion process — 4 steps

Common buyer questions

Two supplier category indexes

Industrial profile mills

Window & door profile mills

Buyer playbooks for adjacent decisions

6061 vs 6063 vs 6005A — a Chinese mill's perspective →

Anti-dumping duties & tariffs — 2026 importer's guide →

Custom extrusion dies — cost, MOQ & lead time →

See how these mills are scored

Top 20 window profile & system mills in China →

Top 10 thermal-break window mills →

Top 10 solar frame extruders →

How to read this supplier data — and what it does not prove