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 the main chapter in the HS classification for technology-intensive products, involving various types of equipment for the production, conversion, storage, transmission, and utilization of electrical energy, including household appliances, electronic components, industrial electrical devices, etc. Within the chapter, items are arranged according to functional logic, from power generation and transformation to power utilization equipment. Heading 8515 belongs to industrial equipment that uses electrical energy for welding, brazing, or cutting. Heading 8515 covers welding machines and apparatus, including various types of welding equipment such as arc welding, resistance welding, laser welding, electron beam welding, and plasma arc welding, as well as equipment for thermal spraying and arc cutting equipment. This heading includes both fully independent welding machines and dedicated parts such as welding electrodes and welding torches. However, note that welding materials such as welding rods and welding wire are not classified under this heading and should be classified according to the nature of the material. Code 851531 is a 6-digit subheading. The first 2 digits "85" represent Chapter 85, namely electrical machinery and equipment and parts thereof. The 3rd-4th digits "15" represent heading 8515, namely welding machines and apparatus. The 5th-6th digits "31" represent subheading 851531, specifically arc welding machines and apparatus, including automatic and semi-automatic ones. Under this subheading, there may also be further subdivided 8-digit or 10-digit codes used to distinguish specific types (such as automatic arc welding machines, semi-automatic arc welding machines, etc.). Therefore, 851531 as a whole refers to arc welding machines, which are the most widely used type of welding equipment. This commodity is classified under 851531 because its core function is to use the heat generated by an electric arc for welding, making it electrical welding equipment. Differences from adjacent codes: 851529 is other resistance welding machines, which use resistance heat; 851539 is other arc welding apparatus, such as non-automatic ones; 851580 is other welding apparatus, such as laser and ultrasonic welding. 851531 specifically refers to arc welding that is automatic or semi-automatic. Therefore, correct classification requires confirming that the welding principle is electric arc and that it has automatic or semi-automatic characteristics.

Product Name: The standard name of the declared commodity, which should accurately reflect the product attributes, such as "arc welding machine" or "automatic arc welding machine." Brand: Fill in the manufacturer or brand name; if there is no brand, fill in "unbranded." Model: Fill in the specific model of the product to distinguish different specifications. Working Principle: Explain the welding principle, such as "arc welding," and indicate whether it is automatic or semi-automatic. Power: Fill in the rated power of the equipment, in kilowatts (kW) or kilovolt-amperes (kVA). Use: Briefly describe the application field, such as "used for welding metal structural parts." Brand Type: Fill in the brand type according to customs regulations, such as "foreign brand (OEM production)," "domestic brand," etc. Export Preference Status: If an export preferential trade agreement is involved, the corresponding code must be filled in. Product Name: Automatic arc welding machine; Brand: ABC; Model: AW-500; Working Principle: Arc welding, automatic; Power: 20kW; Use: Used for steel structure welding; Brand Type: Foreign brand (OEM production); Export Preference Status: None. Failure to distinguish automatic/semi-automatic from manual, leading to incorrect subheading classification. Misreporting an arc welding machine as a resistance welding machine, causing classification disputes. Ignoring brand type and export preference status, affecting customs clearance efficiency.

The core basis for classification is the welding principle and degree of automation. 851531 applies only to equipment that uses arc welding and is automatic or semi-automatic. If it is manual arc welding, it should be classified under 851539; if it is resistance welding, under 851529; if it is laser welding, under 851580. Therefore, it is necessary to determine the welding principle based on the product manual and technical parameters, and confirm whether it has automatic or semi-automatic functions. 851529 Other resistance welding machines and apparatus: Resistance welding uses heat generated by current passing through the contact resistance of the workpieces, while arc welding uses arc heat. The principles are different, and the welding method must be clarified during classification. 851539 Other arc welding machines and apparatus: 851539 is for manual arc welding machines, while 851531 is for automatic or semi-automatic ones. The difference lies in whether it has automatic control or semi-automatic operation functions. 851580 Other welding machines and apparatus: Includes non-arc, non-resistance welding equipment such as laser welding, ultrasonic welding, and electron beam welding, as well as thermal spraying equipment. It must be distinguished based on the working principle. 851521 Fully automatic or semi-automatic resistance welding machines and apparatus: Also automatic/semi-automatic, but the principle is resistance welding, which is different from arc welding. The welding principle must be confirmed during classification. 851519 Other brazing machines and apparatus: Brazing uses filler metal with a melting point lower than the base metal and a lower heating temperature, which is different from the fusion welding of arc welding. Has it been confirmed that the welding principle is electric arc? Has it been confirmed that the equipment is automatic or semi-automatic? Have parameters such as power and model been checked? Have the brand type and export preference been checked? Have customs classification decisions or advance rulings been consulted?

How can one determine whether an arc welding machine is automatic or semi-automatic? Automatic welding machines usually have functions such as program control, automatic wire feeding, and automatic travel, and the operator only needs to monitor; semi-automatic welding machines require manual movement of the welding torch or workpiece, but some parts such as wire feeding are automated. For details, refer to the product manual or technical parameters. How can arc welding machines and resistance welding machines be distinguished during customs declaration? Mainly based on the working principle: arc welding uses arc heat, and resistance welding uses resistance heat. During customs declaration, product technical materials should be provided to clarify the welding principle, and the "Working Principle" in the declaration elements should be filled in correctly. What is the export tax rebate rate for 851531? The export tax rebate rate changes with national policy adjustments. It is recommended to check the latest rebate rate through the official website of the General Administration of Customs or the State Taxation Administration, or use professional trade compliance tools. The code must be declared accurately during customs declaration to apply the correct tax rate. If an arc welding machine is manual, which code should it be classified under? Manual arc welding machines should be classified under 851539 (other arc welding machines and apparatus). 851531 applies only to automatic or semi-automatic arc welding machines. What special requirements are there for importing used arc welding machines? Imported used mechanical and electrical products must comply with the national regulations on the import administration of mechanical and electrical products, and may require pre-shipment inspection, filing, and other procedures. For details, consult the local customs or refer to the Measures for the Inspection and Supervision of Imported Used Mechanical and Electrical Products. How are parts of arc welding machines classified? Dedicated parts such as welding torches and electrodes, if clearly used for arc welding machines, should be classified under the parts subheading of 8515 (such as 851590). However, general-purpose parts such as cables and switches should be classified according to their own material. What should be noted when selling arc welding machines through cross-border e-commerce? It is necessary to confirm that the product complies with the safety certifications of the destination country (such as CE and UL) and to declare the HS code accurately. Small parcel exports may be eligible for simplified declaration, but bulk trade requires formal customs declaration. It is recommended to consult a professional customs broker. How can one check the most-favored-nation tariff rate for 851531? You can log in to the website of the General Administration of Customs of China or use tools such as the "Customs Classification Intelligent Navigation" and enter the HS code to query. The tariff rate may vary depending on trade agreements, origin, etc., and must be considered in light of the specific trade situation.