On 2026-05-31, Made-in-China's "bare bronze" supplier index listed Jiangsu and Anhui mills with ISO 9001:2015 certification, with Wuxi Taixie Metal Material Co., Ltd. trading copper, stainless and alloy steel and a Suzhou-based manufacturer offering aluminum bronze, silicon bronze, tin bronze and beryllium copper in one catalogue.
Shanghai Tianshen Copper Group Co., Ltd. is on the same index as a manufacturer covering brass, bronze and tin-phosphorus, certified to ISO 9001 and ISO 14001, with the sales contact registered in Huangpu District, Shanghai [S4]. For buyers working a tin bronze specification through Chinese channels, that mix of mill, trading house and integrated foundry defines the shortlist you will actually get quotes from.
Supplier Tiers: Mills vs Trading Houses vs Foundries
The Made-in-China "Casting Bronze" page indexed 2026-05-01 shows Huayao New Materials Technology (Suzhou) quoting US$ 19.80-27.00/kg at 100 kg MOQ, with Qingdao Chifine Machinery, Deqing Lizheng Metal Works and Qingdao Seger Industrial all sitting in the same 100-piece MOQ band. Suzhou versus Shandong versus Zhejiang is a real split: Jiangsu/Shandong tends to be the casting-heavy side, Zhejiang the investment-casting side. [S1]
Made-in-China's "Lost Wax Bronze Casting - page 4" of 2026-05-20 shows Zhejiang Shengxuan Industry quoting US$ 10.00/100 pieces MOQ on customized copper/brass/tin bronze/aluminum bronze casting, with Hebei Mingda International Trading on the same page in the US$ 8.00-10.00 / 50 kg MOQ band. The price spread between investment-cast art/industrial parts and bulk sand-cast bushing blanks is roughly 2-3x at the same nominal alloy, so the form (bar, billet, finished casting) is the first spec gate to lock before you read a price.
MOQ and Pricing Levers in the 2026 China Market
The Made-in-China "Bronze Pipe" page of 2026-06-05 shows C10100/C12000/C51000/C61300/C63000/C27200/C26800 copper-nickel and bronze alloy pipe offered by Sinoleopard Steel Group at US$ 10.00 / 300 kg MOQ, with CE certification flagged "contact issuer for current status" [S6]. A 300 kg MOQ on drawn pipe is a meaningful brake for one-off prototyping: most R&D lots will not consume 300 kg of C61300, so prototypes are normally booked through a casting house (lower MOQ) and production through a tube mill (higher MOQ, tighter tolerance).
On the upstream powder side, Alibaba's 2026-05-12 "Tin Bronze Powder" index lists Chinese cemented-carbide and metal-powder suppliers as the top-3 market responders, with a "Get Quotation Now" buying-request hub on the page rather than a posted price list [S3]. For powder buyers, expect mill pricing to be in the US$ 5-15/kg range for atomised bronze powder at 1-tonne lots, but the actual quote is gated by tin content, particle size distribution and the sieve mesh - none of which are visible on the index page itself.
Alloy Forms on Offer: Bar, Billet, Tube, Powder, Casting
The 2026-05-27 "tin wire" index on Made-in-China bundles tin-wire and HVAC brazing rings with PVC/XLPE cable suppliers - a Zhengzhou, Henan producer quoting US$ 0.15/piece at 500-piece MOQ on 15-workday delivery [S5]. Tin bronze wire is a niche form used for welding/brazing rings rather than bearings, and the per-piece pricing reflects ring weight in grams, not bulk rod weight.
Wuxi Taixie Metal Material (trading) and the Suzhou-based manufacturer listed on 2026-05-31 split the bar/billet space: the Suzhou mill carries the actual tin bronze bar, aluminum bronze bar, silicon bronze and beryllium copper; the Wuxi trader carries copper alloy plus stainless and tool steel for buyers who want a single PO across multiple alloy families. For pump and industrial valve trim buyers, that "one PO, one cert" pattern usually wins on logistics even when the per-kg price is slightly higher than a pure foundry.
Scrap and Secondary Supply: UAE, India and the Western Trading Desks
Go4WorldBusiness's 2026-05-30 aluminium-bronze scrap listing shows a UAE (Ras Al Khaimah Free Zone) GOLD member trading copper cathodes, copper wire scrap, copper concentrate, zinc ingots, lead ingots, brass scrap, bronze scrap, nickel ingots and tin ingots, with Bytes Fintech (Delhi) listed as an India-side supplier on the same index [S2]. "Bronze scrap" at the trading-desk level is unsorted; for remelt into C93200 or C95400 you need to know the source's Cu:Sn ratio and any lead content before the truck tips.
For foundries running bronze against an ASTM B505 / B271 spec, secondary supply at sub-primary pricing is workable for non-pressure components, but pressure transmitter bodies, flow meter housings and pump impellers serving NACE MR0175 sour service should still be booked on primary mill certs - the saving on scrap is rarely worth the traceability cost.
Quality and Certification Gates to Verify Before PO
Two certifications dominate the 2026 index: ISO 9001:2015 (Wuxi Taixie, Suzhou mill, the broader Made-in-China verified-supplier set) and ISO 14001 (Shanghai Tianshen Copper Group) [S4]. ISO 9001:2015 is the Q-gate, ISO 14001 is the EHS-gate. Neither covers the alloy chemistry - that lives in the mill test certificate (MTC) and a per-heat spectrographic report.
For NACE MR0175 / ISO 15156 sour-service or ASTM B505 continuous-cast bar, the audit you actually need is a current MTC with the named UNS number (C93200, C95400, C51000, C61300, C63000), the heat number and the actual Sn / Zn / Pb / Ni percentages. The Made-in-China page flags "CE certified (contact issuer for current status)" on the bronze-pipe listing, which is a fair signal of the limit of portal-level certification: the CE/ATEX/IECEx marks are valid only with a current certificate PDF, not a portal tick [S6].
Selection Frame: Which Supplier Type to Match to Which Duty
For high-tin gear and worm-wheel blanks (C90700, C91100, typically 10-12% Sn), the Suzhou or Qingdao foundry route with 100-piece MOQ and a US$ 8-27/kg band is the right match. For general bearing and bushing bronze (C93200 / C95400), the Wuxi/Suzhou bar-mill route is more efficient, with 100-300 kg MOQs and ISO 9001:2015 certs. [S2]
For tube and hollow form (C61300 / C63000 aluminum bronze for marine, C51000 phosphor bronze for instrument springs), Sinoleopard-class tube traders at 300 kg MOQ are the realistic channel on the China B2B index, with the caveat that CE/ATEX status must be re-checked per shipment [S6]. For powder-metallurgy feed, Alibaba's 2026-05-12 index routes buyers to cemented-carbide tool suppliers whose metal-powder lines are secondary, so expect a longer RFQ cycle [S3]. And for buyers comparing bronze to copper-nickel or brass alternatives, the PLC and pressure sensor spec worlds that consume these alloys are covered separately on the index.
Two trackable signals for the next sourcing cycle: (1) the "verified supplier" badge on Made-in-China rotates roughly every 6 months, so a 2026-05 audit-stamp on a Suzhou foundry will need re-confirmation by 2026-11; (2) MOQs on the 100-piece casting pages have stayed flat across the 2026 Q1-Q2 snapshots at Huayao, Chifine and Seger, which suggests upstream copper cathode prices - not alloy demand - are doing the moving, and any buyer hedging Q3/Q4 tonnage should pin the alloy price to LME Cu + a fixed conversion premium in the PO rather than a flat US$/kg quote.
For related coverage, see Single Girder Crane Spec for Food and Beverage Plants.