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Practical casting guides written by our engineers — process selection, tolerances, alloys, heat treatment, surface finishing and quality control for OEM buyers.
How to Choose Between Gravity and Low-Pressure Casting for Your Aluminum Part
A side-by-side comparison of mechanical properties, tolerance, cost and lead time — to help OEM buyers pick the right process.
Inside Lvdewang's 10-Step Quality Control System
From incoming spectrometer check to final OQC — every step, every check, every record.
CNC Machining Tolerance 101: ±0.1 mm vs ±0.05 mm — What Does It Really Cost?
Tighter tolerances can multiply machining cost by 3–5×. Here's how to decide what's actually needed.
Anodizing vs Powder Coating — Choosing the Right Surface Treatment for Cast Aluminum
Both are popular for cast aluminum. We compare durability, cost, lead time and visual finish.
ISO 9001:2015 — What It Means for Your Casting Supplier (and Your Audit)
Why your foundry's ISO 9001 certificate should matter more than you think — and how to verify it's real.
From Drawing to Delivery: How a Typical RFQ Flows Through Our Factory
A behind-the-scenes look at what happens after you hit 'Send Inquiry' — DFM, tooling, T1, mass production.
Aluminum Alloy Quick-Select: ADC12, A380, A356 and AC4B — Which One Is Your Part?
A practical guide to the four most common casting alloys, what each is good at, and how to pick without an argument with your supplier.
Heat Treatment for Cast Aluminum: What T4 and T6 Actually Do to Your Part
Solution treatment, quenching and aging — why heat-treated castings are stronger and when the extra cost is worth it.
How to Verify a Chinese Foundry Before You Send Money
A practical pre-audit checklist for overseas buyers: certificates, real capacity, references and the questions that expose fakes.
Have a casting question our engineers can answer?
Process selection, tolerance, alloy, cost or lead time — send it over and you will get a practical answer within 24 hours.