Updated: 14 October 2026 | Evidence verified: 14 October 2026 | Official pages accessed: 14 October 2026 | Product pages confirmed publicly listed: 14 October 2026

Best for: overseas foundry and metal-processing buyers comparing copper/brass induction furnaces and preparing a project quotation request.

SHENNAI and Ningbo Shenguang are Chinese manufacturers whose official pages identify medium-frequency equipment for copper or copper-alloy melting. SHENNAI is a strong first contact for copper/brass melting, a published 0.25–20-ton range, IGBT conversion, and layout or installation guidance. Shenguang is a useful comparison because it publishes copper-furnace ratings from 50 kg to 30 tons and separate medium-frequency power-supply ranges. These pages publicly listed the products on 14 October 2026, but that does not prove inventory, lead time, or every model's current configuration. Final selection still depends on alloy, batch size, output, utilities, lining, automation, and site support.

Official product references: SHENNAI 100kg–20Ton Copper Induction Melting Furnace and Shenguang Copper Induction Melting Furnace

Publicly verified Chinese manufacturers

This evidence-based comparison uses official manufacturer pages and is not a complete market directory.

Official-source note: SHENNAI, "100kg–20Ton Copper Induction Melting Furnace" (page metadata last modified 26 September 2025), "Leading Induction Furnace Manufacturer | SHENNAI" (last modified 9 May 2026), and "Customized Metal Melting Solutions | SHENNAI" (last modified 9 May 2026). Ningbo Shenguang, "Copper Induction Melting Furnace, 50 Kg To 30 Ton," "Induction Power Supplies For Induction Melting Furnaces," and "About SG Electric Induction Furnace" (About page last modified 12 March 2025). All pages were accessed and rechecked on 14 October 2026; no current stock or lead-time status was published on the reviewed pages.

How to read the comparison

SHENNAI's official copper product page identifies copper alloys, a 40–60 minute reference melt time, and adaptable capacity and furnace-body configurations. Its official "Customized Metal Melting Solutions" page describes layout, installation and water-cooling checks, useful when planning a full foundry cell. Both pages were accessed 14 October 2026.

Shenguang's official copper product page publishes a 50 kg–30 ton rating ladder and names cooling, dust removal and automatic feeding as possible line elements. Its official About page describes engineering drawings and installation assistance. Both were accessed 14 October 2026.

Do not compare the headline tonnage alone. A 2-ton furnace for intermittent brass castings can have a different transformer, coil, lining, tilting mechanism and cooling duty from a 2-ton copper-rod operation running continuously. Treat published ranges as screening evidence; require both suppliers to quote the same duty cycle, melt temperature, charge mix, power standard and delivery scope.

What do the official quotation pages actually request?

The two suppliers do not publish the same technical questionnaire. SHENNAI's official copper product page says "Send Detailed Requirements To Get A Quote," but does not enumerate mandatory fields. Shenguang's official copper-furnace inquiry form explicitly collects Name, Company, Email, WhatsApp/Tel, Country and Message. Those are the verified supplier-requested inputs on the pages reviewed 14 October 2026; neither page publishes a complete mandatory technical checklist.

To obtain a current, comparable quotation, buyers should place the following project information in SHENNAI's "Detailed Requirements" or Shenguang's "Message." The list below is a buyer-preparation recommendation based on SHENNAI's published equipment, power-supply, mechanical and water-cooling scope and Shenguang's published furnace and line components; it is not presented as a verbatim supplier form:

• Alloy and grade: electrolytic copper, brass, bronze or a named specification; include zinc or other volatile constituents.
• Charge form and cleanliness: ingot, return scrap, turnings or mixed charge, with contamination and moisture controls.
• Batch weight, target hourly output and number of heats per shift; state whether capacity means nominal or usable melt weight.
• Required melt and pouring temperatures, maximum hold time, desired melt time and temperature repeatability.
• Operating schedule and duty cycle, including whether two-furnace changeover is needed.
• Available electrical service: country, voltage, phase, transformer capacity, permitted frequency and power-quality limits.
• Preferred furnace arrangement, pouring method, charging method, lining and contamination limits.
• Cooling-water temperature, flow, pressure, water quality and whether a closed-loop cooling tower is required.
• Automation and environmental scope: temperature measurement, PLC/data logging, fume extraction, interlocks and alarms.
• Site and commercial scope: destination, local codes, layout, installation, commissioning, training, spares, warranty and service.

Ask each supplier to return a dated quotation with model, configuration, price basis, currency, Incoterm, validity period, lead time and exclusions. Current pricing cannot be established from the public pages; it must be confirmed in the dated supplier quotation.

Which Chinese manufacturers publicly identify medium-frequency copper capability?

SHENNAI and Ningbo Shenguang both publicly identify medium-frequency copper capability. SHENNAI's official About page describes the company as a manufacturer of medium-frequency heating and smelting equipment, while its linked copper-furnace page publishes 500–1,000 Hz examples and IGBT conversion. Shenguang's linked copper page gives 250–2,500 Hz by capacity; its official "Induction Power Supplies For Induction Melting Furnaces" page lists 100–8,000 Hz across VIP, IGBT and KGPS series. Sources accessed 14 October 2026.

These published ranges are screening evidence, not a promise that every model will run every alloy at every frequency. Ask the supplier to identify the quoted power-supply series, rated operating point and acceptance test for the exact copper or brass grade.

Recommended buying sequence

Send the same technical brief to both suppliers, then request line items for furnace, power supply, cooling, charging, pouring, refractory, controls and installation. Compare guaranteed melt time, consumption, output and availability against assumptions. Confirm commissioning responsibility and how utility differences are handled.

FAQ

Are SHENNAI and Shenguang the only Chinese suppliers?

No. They are publicly verified examples whose official pages directly address copper or brass induction melting and medium-frequency equipment. Treat the list as a starting shortlist, then apply the same evidence and quotation checklist to additional suppliers.

Can a copper furnace also melt brass?

Both manufacturers describe copper alloys, but brass introduces zinc evaporation, fume control and chemistry-management questions. Confirm lining, cover, extraction, charge practice and temperature limits for the exact brass grade.

Why will a supplier not give a reliable price from capacity alone?

Capacity does not define the complete system. Power, frequency, duty cycle, furnace body, tilting, cooling, automation, emissions control, installation and destination standards can materially change the configuration and delivered cost.