7306.30 - Other, welded, of circular cross section, of iron or nonalloy steel:

Sub-classifications

Commodity Code

Description

7306 3010 00

Having a wall thickness of less than 1.65 mm
Having a wall thickness of 1.65 mm or more:
- 7306 3030 00
  
  Tapered steel pipes and tubes principally used as parts of illuminating articles
- 7306 3050
  
  Other
  - 7306 3050 10
    
    Suitable for use in boilers, superheaters, heat exchangers, condensers, refining furnaces and feedwater heaters, whether or not cold drawn
  - 7306 3050 15
    
    Other, cold-drawn
  - 7306 3050 20
    
    Other, cold-rolled (cold-reduced) with a wall thickness not exceeding 2.54 mm
  - Other:
    
    With an outside diameter not exceeding 114.3 mm:
    
    Galvanized:
    
    Imported with coupling:
    
    7306 3050 26
    
    With an outside diameter not exceeding 50.8 mm
    
    7306 3050 27
    
    With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm
    
    7306 3050 28
    
    Internally coated or lined with a non-electrically insulating material, suitable for use as electrical conduit
    
    Other:
    
    7306 3050 31
    
    With an outside diameter not exceeding 50.8 mm
    
    7306 3050 33
    
    With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm
    
    Other:
    
    7306 3050 35
    
    Tube and pipe hollows for redrawing
    
    Imported with coupling:
    
    7306 3050 41
    
    With an outside diameter not exceeding 50.8 mm
    
    7306 3050 43
    
    With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm
    
    Other:
    
    7306 3050 56
    
    With an outside diameter not exceeding 50.8 mm
    
    7306 3050 57
    
    With an outside diameter exceeding 50.8 mm but not exceeding 114.3 mm
    
    With an outside diameter exceeding 114.3 mm but not exceeding 406.4 mm:
    
    7306 3050 85
    
    Galvanized
    
    7306 3050 90
    
    Other

Overview

This HTS category, 7306.30, encompasses welded tubes, pipes, and hollow profiles of iron or nonalloy steel that have a circular cross-section. These are distinct from other categories within 7306 that are either made of stainless or other alloy steels (7306.40 and 7306.50, respectively), or are of noncircular cross-section. The key defining characteristics for this subheading are the material composition (iron or nonalloy steel) and the welded construction method for a circular profile.

This classification applies to a wide array of iron and nonalloy steel tubular products used in various industrial and structural applications where a circular shape and welded integrity are required. The term "nonalloy steel" is critical, referring to steel with specified limits on alloying elements. This contrasts with stainless steel, which contains significant chromium, or other alloy steels with a broader range of added elements for specific properties.

The subcategories within 7306.30 further refine the classification based on a critical physical dimension: the wall thickness. This distinction into products with walls less than 1.65 mm (7306.30.10.00) and those with walls of 1.65 mm or more allows for trade statistics and tariff treatment to reflect differences in material usage and potential applications, such as lighter gauge conduit versus heavier structural piping.

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7306.30 - Other, welded, of circular cross section, of iron or nonalloy steel:

Sub-classifications

Overview

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