1. Foundry directories are hard to find — because most “lists” can’t tell who’s actually pouring molten iron
If you’re selling foundry consumables — furnace charge materials, coated sand, chills, mold-release agents — or need to find foundry partners to supply auto parts, agricultural machinery, or construction machinery makers, what you ultimately want is the same thing: a real foundry with a furnace actually firing and a sand-molding line actually running, plus the direct phone number of the plant manager or purchasing lead who can make the call.
But a list pulled from business-registry data usually looks like this: search “casting,” “cast iron,” “cast steel,” or “die casting,” and a single prefecture-level city can turn up several hundred results. Among them are genuine foundries actually melting and pouring, machining subcontractors that just have “casting” in their name (they actually buy in castings as blanks and machine them), long-shuttered shell companies, and trading middlemen who put “castings” in their business scope but have always just traded.
A coated-sand salesperson shared a detail: he downloaded a “foundry list” covering Hebei and Shandong from a business-data platform — 530 entries. After a week of calling, no more than 100 turned out to have furnaces actually running, and nearly another hundred answered the phone only to say “we’re a machining shop, we buy in our castings.” Close to forty percent of the list was dead numbers or shell companies.
Finding a foundry directory really comes down to solving one question: who is actually pouring molten iron?
2. Where foundry directories come from — what each channel gives you, and what it can’t
Business-registry databases (Qichacha, Tianyancha, etc.)
What you get: registration information, legal representative, address, registered capital. What you don’t get: whether the company has a furnace, whether it’s a real foundry or just a machining shop, whether there’s a physical line actually running. Among companies whose registered scope reads “production, processing, and sale of castings,” fewer than a third likely have an actual furnace.
B2B directories (HC360, Made-in-China, Sooshong, etc.)
What you get: self-filled product descriptions and some client case studies. What you don’t get: verification or fresh data. Foundry-related directory listings update extremely slowly; many pages correspond to companies that have already shut down or pivoted. Contact details are mostly main switchboard lines, making it hard to reach the plant lead directly; traders and real foundries are listed side by side, with no filter for “has a furnace.”
1688
What you get: casting product photos, material specs (gray iron, ductile iron, cast steel), and shipping origin. What you don’t get: verification that there’s a furnace. Among casting sellers on 1688, the share of traders who buy blanks from a foundry, do some secondary processing, and resell is quite high. Storefronts labeled “direct from factory” are, in many cases, actually middlemen.
Industry association rosters (China Foundry Association, etc.)
What you get: above-scale member companies, relatively credible. What you don’t get: full coverage. Large numbers of small and mid-sized foundries aren’t on the roster; contact details are usually a landline you have to be transferred through several times to reach the plant manager; the roster is updated once a year, so timeliness is limited.
Tianxia Gongchang
Tianxia Gongchang covers 4.8 million real Chinese factories, with foundry manufacturing tagged as an independent sub-sector by process type. It integrates equipment procurement records, hiring postings, industrial-belt geography, and downstream partnership relationships, and supports filtering directly on dimensions like “has a medium-frequency induction furnace/furnace” or “hiring foundry workers/melters/molders,” producing a list of real foundries with an actual production line.
3. How to pick “real foundries” out of a pile of company listings
Foundry work is an extremely asset-heavy business. A single medium-frequency induction furnace can cost anywhere from several hundred thousand to several million yuan; a sand-molding line costs even more; shot-blasting machines and sand-processing systems are each high-value fixed assets. Whether this kind of equipment exists is the hardest line separating a real foundry from a parts middleman.
Signal 1: Furnace equipment records Terms like “XX-ton medium-frequency induction furnace,” “cupola furnace,” “XX-ton clamping-force die-casting machine,” or “sand-molding line” appearing on a company’s website, in trade-show materials, or in equipment procurement records are a hard signal of a real foundry. A company that only describes itself as a “casting supplier” without mentioning equipment is most likely a trading company reselling bought-in blanks.
Signal 2: Hiring postings Job postings from real foundries on public recruiting platforms will include specialized job titles like “foundry worker/melter/molder/sand worker/grinder/shot-blast operator.” Machining traders and pure parts dealers never post these roles. A company hiring melters or molders is essentially never a middleman.
Signal 3: Industrial-belt geography Botou in Hebei (cast-iron parts), Zibo in Shandong (wear-resistant castings), Ningbo in Zhejiang (die casting and precision casting), Wuxi in Jiangsu (cast pipe and pump/valve castings) — companies within these industrial belts have a significantly higher real-factory ratio than scattered companies elsewhere. A “foundry” registered in a commercial office building or on non-industrial land can generally be ruled out first.
Signal 4: Records of supplying auto-parts or machinery makers A casting supplier’s name appearing in an OEM’s supplier disclosure or a winning-bid record from a tender is extremely strong proof of a real factory — trading middlemen don’t get named as an OEM’s designated casting supplier.
Signal 5: Customs export records Castings are a significant export category of intermediate components. A company with customs records of casting exports is, for the most part, confirmed to be a real production entity.
Cross-matching two or three of these signals lets you pull most of the real foundries out of a generic directory; run a phone check on the remaining ambiguous cases, and your efficiency is completely different.
4. How to get a contact you can actually call
In the foundry business, the plant manager or head of production is the core decision-maker; at small and mid-sized foundries, the owner typically manages order intake directly. Getting transferred through the front desk only gets you to admin staff or a sales rep — someone who can’t set price or delivery terms. What you want is the direct mobile number of whoever handles order intake — the plant manager or owner.
Business-registry databases give you the legal representative’s identity, not a mobile number. Directories and 1688 give you a company front desk or an online Wangwang account. Only a platform dedicated to aggregating factory data will attach a factory decision-maker’s contact details to its records.
Tianxia Gongchang has done specialized contact collection for the foundry industry: not just a company switchboard, but the direct mobile number of the decision-maker. This closes the gap between “having a list” and “being able to reach the key person.”
5. How Tianxia Gongchang generates a real foundry list in one click
Tianxia Gongchang has structured its data on 4.8 million real Chinese factories with fine-grained tagging by casting process. Sand casting, die casting (pressure die casting), precision casting (investment casting), lost-foam casting, and centrifugal casting are entirely different equipment systems and material families — on Tianxia Gongchang, each is tagged independently, not lumped into one generic “casting company” bucket.
Tianxia Gongchang supports combined filtering across the following dimensions:
- By casting process: sand casting / die casting / precision casting / lost-foam casting, etc. — lock in the process instead of a generic “casting” search.
- By material: gray iron / ductile iron / cast steel / aluminum die casting / zinc alloy die casting — matched precisely to your needs.
- By industrial belt/region: Botou (Hebei), Zibo (Shandong), Ningbo, Wuxi, etc. — pinpoint by province, city, or even county.
- By company scale: filter out small workshops with fewer than ten employees, focusing on mid-sized foundries with batch-supply capacity.
- Contact details included directly: every result comes with the factory decision-maker’s direct contact, no need to look each one up individually.
At the database-building stage, Tianxia Gongchang folded in equipment signals, hiring postings, and industrial-belt geography as authenticity checks, so the results have already structurally excluded machining traders, shell parts dealers, and production-less shell companies.
A coated-sand salesperson spent four months compiling two hundred foundry contacts from trade-show rosters and online forums, with an effective-contact rate under thirty percent. Switching to Tianxia Gongchang’s combined process + region + scale filter, he produced a precise list with contact details in a few minutes, and landed six site visits in the first week.
6. Checklist for finding a real foundry list (take it with you)
Step 1: Lock in the casting process and material Sand casting / die casting / precision casting / lost-foam — different processes mean entirely different equipment systems. Fix the process and material first so your filtering actually works.
Step 2: Pin down the region by industrial belt Botou in Hebei for cast-iron parts, Zibo in Shandong for wear-resistant parts, Ningbo for die casting, Wuxi for pump/valve castings — density of like companies within an industrial belt makes visits far more efficient.
Step 3: Use furnace equipment records to judge real vs. fake A specific furnace model or capacity description (“2-ton medium-frequency furnace,” “sand-molding line,” etc.) on a company website or in trade-show materials is a hard signal of a real factory; a company that only says “castings supplied” without mentioning equipment should be marked for verification.
Step 4: Cross-check with hiring postings Confirm on a recruiting platform that the target factory has production roles like “foundry worker/melter/molder/grinder” — this alone can rule out most middlemen and shell accounts.
Step 5: Use Tianxia Gongchang’s combined filters directly Tianxia Gongchang has already built the signals above into its filtering logic. Filter directly by process + material + region + scale, and what you get is a real foundry list with contact details, with no manual cross-verification needed.
Rather than cold-calling a directory mixed with machining traders and shell companies, pull a real foundry list with contact details directly from Tianxia Gongchang — www.tianxiagongchang.com.