About Yancheng Duopu Import & Export Co., Ltd. - Heaters Supplier in China

China‑based Yancheng Duopu Import & Export Co., Ltd. lists nine active products across heating‑related categories. The catalogue concentrates on ceramic and silicone heating elements together with a single stainless‑steel immersion flange heater that is classified under HS chapter 85, code 8516.10.

The product set includes a ceramic heating element for heat‑gun applications, a ceramic element for plastic‑welding guns, a 220 V 2000 W tubular DC heating tube, a 10 × 130 mm 230 V 350 W cartridge heater, a ceramic core for air‑bobbin heaters, two variants of ceramic heating cores for welding guns (including a 145.582 mm version), a silicone rubber heater, and an immersion flange heater fabricated from SUS316 stainless steel. All items are described by their material type, voltage and power specifications where provided, and the flange heater carries the explicit HS code 8516.10.

Product Range and Specialties of Yancheng Duopu Import & Export Co., Ltd.

The catalogue’s focus on ceramic heating elements aligns with industry standards that typically employ high‑purity alumina (Al₂O₃) or silicon carbide (SiC) matrices capable of withstanding temperatures up to 1,200 °C. Cartridge heaters of the 10 × 130 mm size are commonly supplied at 230 V with power densities of 2.5 - 3.5 kW per liter and must meet IEC 60284 safety requirements. Silicone rubber heaters are usually produced in flexible sheets of 2 - 5 mm thickness, rated for continuous operation at 150 - 200 °C, and are often used for indirect heating of molds or plates.

Immersion flange heaters fabricated from SUS316 stainless steel are designed for water or oil heating in industrial processes. The material complies with ASTM A240 for corrosion resistance, and products in HS 8516.10 are expected to conform to IEC 60335‑2‑30 for electric immersion heaters. Typical dimensions for flange heaters range from 100 mm to 300 mm in diameter, with power ratings from 0.5 kW to 5 kW, and they are frequently supplied with a bolted or welded mounting flange.

Trade and Export Information - Yancheng Duopu Import & Export Co., Ltd.

China remains a global exporter of electric heating appliances, and the HS 8516.10 classification covers a broad spectrum of immersion heaters, including the stainless‑steel flange unit listed by this supplier. Primary import markets for such goods are the European Union, the United States, and the Middle East, where buyers often require CE, UL, or IECEx certification for safety and hazardous‑area compliance. Export shipments from Chinese ports such as Shanghai or Ningbo typically use 20‑ft or 40‑ft containers with wooden pallets, and common Incoterms are FOB Shanghai or CIF destination port.

Sourcing from Yancheng Duopu Import & Export Co., Ltd. - Buyer Guidance

When sourcing ceramic heating elements, request a material test report confirming Al₂O₃ or SiC composition, as well as a thermal performance certificate showing maximum operating temperature and power density. For the cartridge heater, verify the exact dimensions (10 × 130 mm), voltage rating (230 V), wattage (350 W), and compliance with IEC 60284 before placing an order.

For the immersion flange heater, ask for a stainless‑steel grade certificate (SUS316, ASTM A240) and a CE or UL test report that covers electrical safety, temperature rise, and corrosion resistance. Confirm the HS 8516.10 designation on commercial invoices and ensure that packaging meets ISO 12195 for safe transport of heated equipment.

What voltage and power specifications are available for the cartridge heater?

The catalogue lists a 10 × 130 mm cartridge heater rated at 230 V and 350 W. Buyers should confirm that the dimensions and power match their equipment requirements before ordering.

Which material is used for the immersion flange heater?

The immersion flange heater is made from stainless steel 316 (SUS316), a corrosion‑resistant alloy commonly used in industrial heating applications.

What HS code applies to the flange heater?

The immersion flange heater is classified under HS code 8516.10, which covers electric heating appliances and parts thereof.

Are there typical certifications required for these heating products?

Buyers usually request CE, UL, or IECEx certifications for electric heating elements, as well as material certificates (e.g., ASTM A240 for SUS316) and IEC 60284 compliance for safety.

What packaging and shipping methods are standard for these heaters?

Heaters are typically packed in wooden crates or reinforced cardboard boxes, placed on pallets, and shipped in 20‑ft or 40‑ft containers. FOB Shanghai is a common Incoterm for Chinese exporters.

How can I verify the performance of the ceramic heating elements?

Request a test report that includes maximum operating temperature, thermal output (kW), and resistance measurements. Such reports are standard for ceramic heating elements used in heat‑gun and welding‑gun applications.

Is a sample available before a full order?

Suppliers generally provide a single unit sample for performance verification, subject to the buyer covering sample shipping costs under the agreed Incoterm.

What are the typical lead times for these heating products?

Lead times for standard ceramic or silicone heating elements range from 15 to 30 days after order confirmation, while custom‑size flange heaters may require 30‑45 days depending on machining and coating processes.