Chapter 73 covers articles of iron or steel, including steel pipes, hollow profiles, pipe fittings, structural members, containers, cables, etc. The scope of this chapter ranges from raw materials to finished products, but excludes ferrous waste and scrap (Chapter 72), mechanical and electrical products (Chapters 84/85), and vehicle parts (Chapter 87). The core is further processed products of iron and steel, such as welded pipes, seamless pipes, castings and forgings, etc. Heading 7306 covers other tubes, pipes and hollow profiles of iron or steel, such as seamless pipes, welded pipes (including rectangular pipes), riveted pipes, etc., but excludes cast iron pipes (7303), seamless oil casing (7304), and pipe fittings (7307). The key characteristic is a tubular or hollow profiled cross-section, and not castings. First 2 digits 73: Chapter 73, articles of iron or steel. Digits 3-4: 06: Heading 7306, other tubes, pipes and hollow profiles of iron or steel. Digits 5-6: 69: Subheading 730669, specifically welded pipes of other cross-sectional shapes, non-circular, rectangular cross-section. Note: 730661 is circular welded pipe, 730669 is rectangular or other non-circular welded pipe. This commodity is a rectangular welded pipe, belonging to non-circular cross-section welded pipe, and the material is iron or steel. Because it is non-circular, 730661 (circular welded pipe) is excluded; because of the welding process, 7304 (seamless pipe) is excluded; because it is not cast iron, 7303 is excluded. Therefore, it is classified under 730669.

Product Name: Declared commodity name should accurately describe as rectangular welded pipe, avoid vaguely writing steel pipe. Material: Specify the type of steel, such as carbon steel, alloy steel, and provide grade (e.g., Q235B). Specifications and Dimensions: Fill in cross-section length, width, wall thickness and length, in millimeters. Processing Technology: Explain the welding method, such as high-frequency welding, submerged arc welding. Use: Specific use, such as building structures, machinery manufacturing, furniture, etc. Surface Treatment: Such as galvanized, painted, untreated, etc. Brand: If there is a brand, declare it; if no brand, fill in none. Product Name: Rectangular welded pipe; Material: Carbon steel Q235B; Specifications: Length 100mm × Width 50mm × Wall thickness 3mm × Length 6000mm; Processing Technology: High-frequency welding; Use: Building steel structure; Surface Treatment: Galvanized; Brand: None. Mistakenly classifying rectangular pipe as circular welded pipe 730661. Ignoring declaration of wall thickness, leading to classification disputes. Incorrectly classifying stainless steel rectangular pipe under this code, should it be classified under 7306.61 or 7306.69? Note that stainless steel pipes have separate subheadings.

Classification basis: 1. Material is iron or steel; 2. Tubular, not hollow profiled; 3. Welding process; 4. Cross-section is rectangular, not circular. Meeting the above conditions classifies under 730669. If made of stainless steel, should it be classified under 7306.61 or 7306.69? Need to check subheading notes. 730661 Circular welded pipe: Cross-section is circular, this code is rectangular, different cross-sectional shape. 730630 Other circular welded pipe: Also circular cross-section, and may be other iron or steel, but cross-sectional shape does not match. 730690 Other welded pipes: Refers to welded pipes not elsewhere specified, such as profiled pipes, but rectangular pipes are explicitly listed under 730669. 730419 Other seamless pipes: Seamless process, not welded, and cross-section may be circular. 730799 Pipe fittings: Pipe fittings are used for connection, not the pipe itself. Is it rectangular cross-section? Is it a welding process? Is the material iron or steel? Is it non-stainless steel? Are the specifications complete?

What is the difference in classification between rectangular welded pipe and rectangular seamless pipe? Rectangular welded pipe is classified under 730669, while rectangular seamless pipe, if made of iron or steel, should be classified under 7304 (seamless pipes), but 7304 is mainly for circular cross-sections, non-circular seamless pipes may be classified under 7304.59 or others. It needs to be determined based on specific cross-section and material. Is stainless steel rectangular welded pipe also classified under 730669? No, stainless steel rectangular welded pipe should be classified under 7306.61 (circular) or 7306.69? Note: 7306.61 is circular stainless steel welded pipe, 7306.69 is other stainless steel welded pipe? Actual subheading structure: 7306.11-7306.19 are stainless steel circular welded pipes, 7306.21-7306.29 are stainless steel non-circular welded pipes? Need to verify. This code 730669 is other iron or steel non-circular welded pipes, stainless steel has separate subheadings. How to query the import tax rate for 730669? It can be queried through customs tariff, international trade single window, or professional databases. Tax rates vary by country and trade agreements, it is recommended to refer to the latest tariff. How to fill in specifications and dimensions when declaring? Should fill in cross-section outer diameter length, width, wall thickness and length, in millimeters, such as 100×50×3×6000mm. Are rectangular welded pipe and square welded pipe classified the same? Square welded pipe also belongs to rectangular cross-section, classified under 730669. If the rectangular pipe is galvanized, does the classification change? No change, still classified under 730669, but surface treatment must be noted when declaring. Does 730669 include profiled pipes? No, profiled pipes are usually classified under 730690, rectangular pipes have a specific subheading. Does export tax rebate apply to 730669? Export tax rebate depends on national policies, need to check the latest rebate rate. Generally, steel products have rebates, but may be adjusted.