Chapter 85 covers electrical machinery and equipment and parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers, and parts and accessories of such articles. This chapter is one of the most technology-intensive chapters in the HS classification, covering a wide range of products from household appliances to industrial electronic equipment. The core characteristic is that goods must operate relying on electrical energy or be parts of electrical devices, but note that mechanical products of Chapter 84 (such as power tools) and optical instruments of Chapter 90 are excluded. Heading 8515 covers welding machines and apparatus, including arc welding, resistance welding, laser welding, ultrasonic welding and other types of welding equipment, as well as electric machines and apparatus for hot spraying of metals or cermets. However, note: this heading only includes electric welding equipment, and does not include hand-held spray guns of Chapter 84, welding electrodes or welding wire of Chapter 82 (classified according to material), nor laser welding equipment of Chapter 90 (if its function mainly relies on optical principles). The first 2 digits 85: indicates Chapter 85 (electrical machinery and equipment). Digits 3-4, 15: indicates heading 8515 (welding machines and apparatus). Digits 5-6, 39: indicates subheading 851539, i.e., "other arc welding machines". Among these, 8515 already has multiple subheadings: 851511 for soldering irons and guns, 851519 for other brazing machines, 851521 for fully or partly automatic resistance welding machines, 851529 for other resistance welding machines, 851531 for fully or partly automatic arc welding machines, and 851539 for other arc welding machines (i.e., non-fully/partly automatic arc welding machines). Therefore, 851539 specifically refers to manually or non-automatically controlled arc welding equipment. This commodity is classified under 851539 because it is an arc welding machine and does not belong to the fully or partly automatic type. If it were a fully or partly automatic arc welding machine, it should be classified under 851531; if it were a resistance welding machine, it should be classified under 851521/851529; if it were a brazing machine, it should be classified under 851511/851519. In addition, if it were laser welding equipment, it would generally be classified under 851580 (other welding machines) or Chapter 90. Therefore, 851539 is the residual subheading for arc welding machines after excluding automatic models.

Product Name: The specific name of the declared commodity, which should indicate arc welding machine and state whether it is automatic or partly automatic. Brand: Fill in the manufacturer or brand name; if there is no brand, fill in "no brand". Model: Fill in the specific model of the equipment, which should be consistent with the physical nameplate. Working Principle: Explain the welding method, such as arc welding (including manual arc welding, argon arc welding, submerged arc welding, etc.). Whether Automatic or Partly Automatic: Clarify whether the equipment is fully automatic or partly automatic, which is the key to distinguishing 851531 from 851539. Power: Fill in the rated power of the equipment (such as kW or kVA), which helps customs determine the equipment's attributes. Use: Briefly describe the equipment's application field, such as metal processing, shipbuilding, etc. Product Name: Arc welding machine (manual); Brand: ABC; Model: ZX7-400; Working Principle: Inverter-type manual arc welding; Whether Automatic or Partly Automatic: Manual; Power: 16kVA; Use: Welding of metal structural parts. Mistakenly declaring a partly automatic arc welding machine as manual, leading to incorrect subheading (should be 851531). Confusing arc welding machines with resistance welding machines, incorrectly classified under 851529. Failure to provide working principle explanation, making it impossible for customs to determine whether it is arc welding. False declaration of brand and model, affecting subsequent price audit and origin determination.

The core basis for classification is the product's welding principle and degree of automation. First, according to Chapter 85 notes, arc welding machines belong to electric welding equipment. Second, heading 8515 explicitly includes arc welding machines. Finally, according to the subheading structure, 851531 is for fully or partly automatic arc welding machines, and 851539 is for other arc welding machines. Therefore, when determining, it is necessary to confirm whether the equipment is fully or partly automatic; if not, classify under 851539. At the same time, other welding methods such as resistance welding, brazing, and laser welding must be excluded. 851531 Fully or partly automatic arc welding machines: This subheading only includes fully or partly automatic arc welding machines, while 851539 is for manual or non-automatic arc welding machines. The difference lies in whether the equipment has automatic functions such as automatic wire feeding and automatic travel. 851529 Other resistance welding machines: Resistance welding machines use resistance heat generated by current passing through the contact surface of workpieces for welding, while arc welding machines use arc heat. The principles are different and must not be confused. 851519 Other brazing machines: Brazing uses filler metal with a melting point lower than the base metal, which is heated to fill the joint, while arc welding melts the base metal. Brazing machines are classified under 8515, but under different subheadings. 851580 Other welding machines and apparatus: This subheading is a residual subheading, including laser welding, ultrasonic welding and other welding equipment not elsewhere specified. Arc welding machines already have a dedicated subheading and should not be classified here. Confirm whether the equipment uses the arc welding principle. Confirm whether the equipment is non-fully or partly automatic. Confirm whether it belongs to resistance welding, brazing, or other types. Check the consistency of brand, model, and actual product. Check whether the declaration elements are complete and accurate.

How to determine whether an arc welding machine is manual or partly automatic? Manual arc welding machines require manual adjustment of current and movement of the welding electrode, with no automatic wire feeding or travel function; partly automatic arc welding machines usually have automatic wire feeding, but the welding gun still needs to be moved manually. Fully automatic is completely controlled by the machine. When declaring, it is necessary to judge based on the actual functions of the equipment and refer to the product manual. What is the difference between arc welding machines and resistance welding machines in HS classification? Arc welding machines use arc heat and are classified under 851531 or 851539; resistance welding machines use resistance heat and are classified under 851521 or 851529. The principles are different, and the working principle must be clarified during classification to avoid confusion. If an arc welding machine has automatic wire feeding, is it necessarily classified under 851531? Not necessarily. Automatic wire feeding is a feature of partly automatic arc welding machines, but if the equipment also has automatic travel or fully automatic control, it is classified under 851531. If only wire feeding is automatic while the welding gun is still manual, it is usually regarded as partly automatic and classified under 851531. However, it must be determined in conjunction with specific functions; it is recommended to provide technical parameters. What is the export tax rebate rate for 851539? The export tax rebate rate will be adjusted with national policies. It is recommended to check the latest rebate rate through the official website of the State Taxation Administration or the General Administration of Customs. Generally, arc welding machines may enjoy different rebate rates, subject to actual inquiry. What are the consequences of incorrectly filling in the brand and model during declaration? It may lead to customs classification errors, failure of price audit, or even suspected false declaration, facing administrative penalties. It is recommended to declare truthfully and ensure consistency between documents and goods. What certifications are required when importing arc welding machines? Depending on the use and power, CCC certification (if applicable), energy efficiency labels, etc. may be required. The specific requirements are subject to customs and market regulatory authorities. It is recommended to consult a professional customs broker in advance. How to query the MFN tax rate for 851539? You can log in to the official website of the General Administration of Customs of China, enter "Import and Export Tariff" to query, or use third-party trade data platforms. Tax rates may vary depending on different free trade agreements and need to be determined in conjunction with the origin. If an arc welding machine is used for robot integration, is it still classified under 851539? If the arc welding machine is part of a robot system, and the robot itself is classified under 8479 or 8515, it needs to be classified as a whole according to function. If the welding function is independent, it is usually still classified under 8515. It is recommended to provide complete technical information for customs determination.