The global demand for CaSi (calcium-silicon) cored wire has grown steadily through 2024–2025 as steelmakers and foundries push for cleaner deoxidation, improved inclusion control, and faster ladle practices.Top 10 Casi Cored Wire Manufacturers in China - October 2025
The global demand for CaSi (calcium-silicon) cored wire has grown steadily through 2024–2025 as steelmakers and foundries push for cleaner deoxidation, improved inclusion control, and faster ladle practices. CaSi cored wire is now a standard metallurgical additive for ladle refining, inoculation and desulfurization steps across electric-arc furnace (EAF) and converter steelmaking. This report ranks the top 10 CaSi cored wire manufacturers in China in October 2025, ordered for market relevance, product range, export footprint and public presence.
1 - UNG CO., LTD.
Core product advantage
UNG offers an integrated metallurgy product line that includes CaSi (Casi) cored wire, recarburizers and inoculants. Their cored wire portfolio emphasizes consistent core chemistry, controlled filling rates and multiple diameter options (commonly 9–16 mm). Product control targets low sulfur and predictable release rates for ladle addition, supporting fast feed and even dissolution in molten steel.
Service & supply strengths
UNG lists large-scale production, in-house QC and export logistics as strengths. They operate dedicated production lines for core wire, packaging and customized specifications for the export market. Typical services include product certification, small batch sample supply and FCL export coordination.
Recommended products & sample review
Recommended SKU: 13 mm CaSi cored wire, filling ratio tuned for 250–330 g/m (typical spec bands). Samples generally arrive as wooden palletized crates with desiccant; sample review from customers reports uniform core distribution, low dust and stable Ca/Si analysis on lab checks.
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2 - Zhenxin Ferroalloy (Anyang Zhenxin)
Core product advantage
Zhenxin's strength lies in a broad ferroalloy and cored-wire portfolio that includes CaSi cored wire, CaFe, and FeSi variants. Their technical selling points are tight composition control (e.g., Ca 30%+, Si 50%–75% depending on product) and multiple mechanical types (seamless vs. wrapped). Their manufacturing notes highlight internal-drawing and external release types for different feeding systems.
Service & supply strengths
They provide ISO-style documentation, flexible MOQ options, and steady export experience since the 2000s. Zhenxin emphasizes vertical integration with alloy sourcing and an experienced export team for sample and commercial orders.
Recommended products & sample review
Recommended SKU: CaSi cored wire 13 mm, 0.4 mm strip thickness, Ca 30%+, Si 55%+. Sample feedback in industry listings praises consistent melting behavior and good deoxidation efficiency in LF and ladle refining trials.
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3 - Anyang Huatuo / Sialloy (Huatuo Metallurgy)
Core product advantage
Sialloy / Huatuo produces ferro silicon variants and CaSi cored wire with a long track record. Their product messaging highlights high-purity silicon sources and tailored Ca/Si ratios to reduce non-metallic inclusion content and to improve desulfurization kinetics.
Service & supply strengths
Large production footprint in Anyang enables volume supply and inventory buffering. The company emphasizes metallurgical consulting to match cored wire chemistry to steel grade and process (EAF vs LD converter vs foundry).
Recommended products & sample review
Recommended SKU: High-purity CaSi cored wire reels (9–16 mm diameters). Industry trials cite reliable deoxidation, and Sialloy's product pages include case studies about reduced sulfide stringer formation when combined with barium or aluminum additives.
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4 - ANSSEN Metallurgy Group Co., Ltd.
Core product advantage
ANSSEN positions itself as a full-service metallurgy house: cored wire, inoculants, refractory materials and refining equipment. Their CaSi cored wires are offered alongside process consulting for LF refining and inclusion shape control.
Service & supply strengths
Anssen's advantage is global distribution channels and multi-site manufacture, allowing quicker lead times for overseas customers. They emphasize after-sales technical support and spare parts management for ladle-feeding equipment.
Recommended products & sample review
Recommended SKU: CaSi cored wire matched to ladle-fed feeders; customers note good packaging and traceable batch certificates on arrival. Independent sample reviews reference close alignment between declared alloy analysis and lab results.
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5 - XLS Metals (Anyang Xinlongsen)
Core product advantage
XLS promotes technical consistency and scale. CaSi products emphasize custom diameters and filling ratios; XLS also provides FeSi and modified CaSi blends for special grades (e.g., low-S steel, sulphur sensitive grades).
Service & supply strengths
XLS lists dedicated R&D, export packaging and logistics, plus optional third-party testing certificates. They support small trial orders and bulk contracts with staggered shipments.
Recommended products & sample review
Recommended SKU: 13 mm CaSi cored wire, customization available for Ca% and Si% per buyer request. Sample comments indicate a low-dust fill and predictable consumption rates during ladle additions.
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6 - Sino-Star / Anyang Jinsheng (Sino-Stargroup)
Core product advantage
Sino-Star (Jinsheng) supplies CaSi cored wire among broader ferroalloy lines. Their product notes emphasize rapid dissolution and suitability for both steel and foundry use, with emphasis on controlled barium/silicon blends where required.
Service & supply strengths
Factory scale (30,000 m²) and decades of exporting experience. The supplier highlights responsive overseas service and small-lot sample dispatch for process testing.
Recommended products & sample review
Recommended SKU: Standard CaSi wires and Ca-Si-Ba blends for special inclusion control. Buyer trial notes mention stable chemical release and dependable container packaging.
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7 - ZhenAn / Ferro-Silicon-Alloy portal suppliers
Core product advantage
This cluster (portals and group listings) aggregates several manufacturers producing CaSi, FeSiMg and related cored wires. Advantages are access to a range of chemistries and rapid quotes across suppliers.
Service & supply strengths
Aggregated suppliers provide volume flexibility and comparative quotes. Many manufacturers in the portal offer external-release and internally-drawn cored wire types for different feeder systems.
Recommended products & sample review
Recommended approach: request multiple samples from portal suppliers to benchmark dissolution rate, Ca recovery and inclusion behavior. Portal reviews note that specification tables and sample certificates are generally available on request.
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8 - Henan Rongxing (Rongxing Group)
Core product advantage
Rongxing's strength is deep experience in carbon and graphite products; they cross-supply metallurgical additives and can combine carbon/riser solutions with CaSi products for specific foundry applications.
Service & supply strengths
Strong production capacity and international trade channels. Rongxing promotes certified manufacturing processes and long history in the supply chain (group history dating to early 1990s).
Recommended products & sample review
Recommended SKU: CaSi blend wires where combined carbon or carburizer control is needed. Sample feedback: stable packaging and reliable COA documentation for export lots.
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9 - Holax Metal (HOLAX)
Core product advantage
Holax markets a straightforward technical CaSi cored wire designed for standard deoxidation and desulfurization tasks. Their product copy stresses simple specs for easy procurement and repeat ordering.
Service & supply strengths
Supplier listings include standard MOQ, packaging and specification sheets. Holax is useful for buyers seeking a straightforward supply line without specialized customization.
Recommended products & sample review
Recommended SKU: 13 mm CaSi standard composition; sample review indicates straightforward use for general duty steel grades.
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10 - Jiangyin Hongrui Cored Wire Co., Ltd.
Core product advantage
Hongrui is one of the older dedicated cored wire producers in China. Their CaSi cored wire line emphasizes mature production lines, reliable chemistry control (Ca, Si balance), and multiple wire diameters (commonly 9 mm, 13 mm) with stable filling ratios. They also produce related alloy and refractories, which helps them integrate raw material supply and maintain cost stability.
Service & supply strengths
They claim to have six cored wire production lines, export experience to ~22 countries, ISO & third-party inspection capability, and ability to adjust specs per customer request. Their location, relatively close to the Shanghai / Yangtze River economic zone, gives some logistical advantage for international shipping in Eastern China.
Recommended products & sample review
Recommended SKU: CaSi cored wire, e.g., 13 mm, Ca ≥ 30%, Si 55–65%, strip thickness ~0.4 mm.
Sample review: The company's public profile mentions stable delivery, conformity to declared chemical specs, ability to provide certificates, and good feedback from customers in export markets.
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