Chapter 73 covers articles of iron or steel, but excludes steelmaking raw materials (Chapter 72) and mechanical or electrical products (Chapters 84-85). This chapter includes tubes, hollow profiles, wire, cables, nails, bolts, springs, chains, tableware, sanitary ware, etc. The core characteristic is finished or semi-finished products made from iron or steel materials through further processing (such as casting, forging, welding, stamping), but not reaching the completeness of machinery of Chapter 84 or furniture of Chapter 94. Heading 7314 covers cloth (including endless bands), grill, netting, fencing, grating, mesh sheets, expanded metal sheets, etc., of iron or steel wire. These products are made by weaving, welding, stamping, or expanding processes, and are used for filtration, screening, protection, decoration, etc. The key distinction is that the material is iron or steel wire, and the structure is mesh or perforated sheet form, rather than solid plate (classified under 7208-7212) or punched metal plate (expanded metal classified under 7314). First 2 digits 73: belongs to Chapter 73 'Articles of iron or steel', indicating the base material of the goods is iron or steel. Digits 3-4, 14: heading 7314, specifically 'Cloth, grill, netting, fencing, grating, mesh sheets, expanded metal sheets, of iron or steel wire'. Digits 5-6, 50: subheading 731450, under heading 7314 further limited to 'wire sieve', i.e., iron or steel wire mesh products with screening function. This subheading is distinguished from 7314.20 (welded mesh), 7314.30 (other woven mesh), etc., emphasizing the 'sieve' use and specific woven structure. This commodity is classified under 731450 rather than 731420 or 731430 because it is a 'wire sieve', i.e., woven mesh used for screening particles, with specific mesh opening and weaving method (such as plain weave, twill weave). 731420 is welded intersection mesh, 731430 is other woven mesh but not for screening. 731450 explicitly covers wire mesh for screening purposes, and the material is steel wire, conforming to the subheading description.

Product Name: The specific name of the declared commodity, such as 'wire sieve', 'stainless steel screen mesh', 'woven screen mesh', etc., which must be consistent with the actual goods. Material: The specific material of the iron or steel wire, such as low carbon steel, stainless steel (304, 316), galvanized steel wire, etc., which affects classification. Specifications and Dimensions: Mesh opening size (mesh count or millimeters), wire diameter, mesh width, mesh length, etc., used to determine whether it conforms to screen mesh characteristics. Weaving Method: Such as plain weave, twill weave, dutch weave, welding, etc., which affects subheading distinction. Use: Clearly used for screening, filtration, grading, etc., such as 'for mining screening', 'for flour filtration'. Surface Treatment: Such as galvanized, plastic-coated, untreated, etc., which may affect classification (e.g., plastic-coated may be classified under other chapters). Brand or Model: If there is a brand or model, it must be declared for customs identification. Product Name: Stainless steel wire sieve; Material: Stainless steel 304; Specifications: Mesh opening 0.5mm, wire diameter 0.2mm, mesh width 1m, mesh length 30m; Weaving Method: Plain weave; Use: For chemical powder screening; Surface Treatment: Untreated; Brand: No brand. Mistakenly classifying stainless steel screen mesh under 7314.20 (welded mesh), when it is actually woven mesh and should be classified under 7314.50. Ignoring mesh opening size, resulting in inability to distinguish screen mesh from general protective net. Classifying plastic-coated steel wire mesh under 7314, when it may actually be classified under 3917 (plastic products).

Core basis for classification: 1) Material is iron or steel wire; 2) Structure is woven or welded mesh; 3) Has screening function (specific mesh opening and weaving method). According to the notes to Chapter 73 of the Import and Export Tariff, heading 7314 includes cloth, grill, netting, fencing, grating, etc., of iron or steel wire. Subheading 731450 specifically refers to 'wire sieve', i.e., woven mesh used for screening. If it is welded mesh, classify under 731420; if it is other woven mesh but not for screening, classify under 731430. If the mesh sheet is stamped and expanded, classify under 7314.41 or 7314.49. 731420 Welded mesh: Welded mesh is made by welding intersections, while 731450 is woven mesh without welding points. 731430 Other woven mesh: 731430 is general woven mesh, not for screening purposes; 731450 is specifically for screening, with specific mesh opening requirements. 731441 Galvanized or zinc-coated mesh sheets: Mesh sheets are stamped or expanded metal sheets, not woven mesh; 731450 is woven steel wire mesh. 731449 Other mesh sheets: Same as above, mesh sheets are punched plates, not woven wire mesh. 842139 Parts for filtering machinery: If the screen mesh is imported as a part for filtering machinery, it may be classified under Chapter 84, but screen mesh imported separately is classified under 7314. Is the material iron or steel wire? Is it woven mesh rather than welded mesh? Does it have screening function (specific mesh opening)? Is it not plastic-coated or combined with other materials? Is it imported separately rather than as a machine part?

How to inquire the HS code for wire sieve? First confirm the material is iron or steel wire, then confirm the weaving method (woven or welded), then confirm the use (screening). If it is woven screen mesh, classify under 731450; if it is welded mesh, classify under 731420. You can inquire through the customs tariff or classification decisions. Are there differences in classification and tax rates between stainless steel screen mesh and galvanized screen mesh? In terms of classification, both are classified under 731450, but the material affects declaration elements. Regarding tax rates, different materials may apply different rates, and you need to check the current year's tariff. It is recommended to declare according to the actual material. What is the difference between steel wire screen mesh and iron wire mesh? Steel wire screen mesh usually refers to woven mesh used for screening, with precise mesh openings; iron wire mesh generally refers to various iron wire products, which may be classified under other subheadings of 7314 or 7326. The key depends on the use and weaving method. If the screen mesh is plastic-coated, can it still be classified under 731450? If the plastic coating of the plastic-coated screen mesh plays the main role, it may be classified under 3917 (plastic products); if it is only surface-coated, it may still be classified under 7314. Judgment should be based on coating thickness and function, and it is recommended to consult customs. What declaration elements are required for importing wire sieve? Need to declare product name, material, specifications and dimensions, weaving method, use, surface treatment, brand, etc. Specific requirements are subject to customs, and you can refer to the 'Standard Declaration Catalog'. If the steel wire screen mesh is imported as a machine part, will the code be different? If the screen mesh is imported together with the machine, it is classified according to the machine; if imported separately, it is still classified under 731450. However, if the screen mesh is a dedicated part, it may be classified as a machine part, and judgment should be based on the General Rules for Classification. How to determine the HS code corresponding to the mesh count of the screen mesh? Mesh count is not a determining factor for the HS code, but it affects the determination of screening use. As long as it conforms to the characteristics of woven screen mesh, it is classified under 731450 regardless of mesh count. Mesh count or mesh opening must be provided at declaration. What is the import tariff rate for steel wire screen mesh? Tax rates change, and you need to check the current year's 'Import and Export Tariff'. You can obtain it through the General Administration of Customs website or tariff inquiry tools. Note that different countries of origin may apply agreement rates.