Tubes, pipes and hollow profiles, of cast iron

HS v2017 Code: 7303

Chapter	Heading	Sub-heading
73	03	n/a

Code	7303
Version	HS v2017
Hierarchy Level	4
Datasource	WCO
Chapter	73

Ancestor Codes: Iron or steel articles

This Code: Tubes, pipes and hollow profiles, of cast iron

Child Codes: Cast iron; tubes, pipes and hollow profiles

Sibling Codes (Nearest 5): Iron or steel sheet piling, whether or not drilled, punched or made from assembled elements; welded angles, shapes and sections, of iron or steel; Railway or tramway track constructions of iron or steel; rails, check and track rails, switch blades, crossing frogs, point rods, sleepers, fish-plates, chair wedges, sole plates, bedplates, ties and the like; Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel; Iron or steel (excluding cast iron); tubes and pipes (e.g. welded, riveted or similarly closed), having circular cross-sections, external diameter of which exceeds 406.4mm, not seamless; Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), n.e.c. in chapter 73

About tubes, pipes and hollow profiles, of cast iron

HS code 7303 covers a crucial segment of the metal manufacturing industry, encompassing the production of tubes, pipes, and hollow profiles made from cast iron. These cast iron products play a vital role in a wide range of applications, from construction and infrastructure to industrial equipment and transportation systems. As a foundational material, the output of this industry supports the development and functioning of numerous other economic sectors, making it an integral part of the broader global economy.

Production process

The production of cast iron tubes, pipes, and hollow profiles typically involves a multi-step process. First, raw materials such as pig iron, scrap metal, and various alloys are melted in a furnace to create the desired cast iron composition. The molten metal is then poured into molds or dies, which give the products their specific shapes and dimensions. After cooling and solidification, the cast iron components may undergo further processing, such as cutting, threading, or surface finishing, to meet the required specifications and quality standards.

Production inputs

The main inputs required for the production of cast iron tubes, pipes, and hollow profiles include pig iron, scrap metal, and various alloying elements such as carbon, silicon, and manganese. Additionally, the industry relies on specialized casting equipment, including furnaces, molds, and die-casting machines. Energy sources, such as electricity or natural gas, are also essential for the melting and casting processes. The availability and cost-effectiveness of these raw materials and production resources can significantly impact the overall competitiveness of the industry.

Production outputs

The primary outputs of HS code 7303 are cast iron tubes, pipes, and hollow profiles, which find widespread use in a variety of applications. These products are often consumed by industries such as 7304 (Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel), 7305 (Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross-sections, the external diameter of which exceeds 406.4 mm, of iron or steel), and 7306 (Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel), as well as the construction, infrastructure, and industrial equipment sectors.

Family tree for tubes, pipes and hollow profiles, of cast iron

    graph LR
    A["<a href='/classifications/hs/v2017/73'>73: Iron or steel articles</a>"]
A --> B["<a href='/classifications/hs/v2017/7303'>7303: Tubes, pipes and hollow profiles, of cast iron</a>"]

    A --> C["<a href='/classifications/hs/v2017/7301'>7301: Iron or steel sheet piling, whether or not drilled, punched or made from assembled elements; welded angles, shapes and sections, of iron or steel</a>"]
A --> D["<a href='/classifications/hs/v2017/7302'>7302: Railway or tramway track constructions of iron or steel; rails, check and track rails, switch blades, crossing frogs, point rods, sleepers, fish-plates, chair wedges, sole plates, bedplates, ties and the like</a>"]
A --> E["<a href='/classifications/hs/v2017/7304'>7304: Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel</a>"]
A --> F["<a href='/classifications/hs/v2017/7305'>7305: Iron or steel (excluding cast iron); tubes and pipes (e.g. welded, riveted or similarly closed), having circular cross-sections, external diameter of which exceeds 406.4mm, not seamless</a>"]
A --> G["<a href='/classifications/hs/v2017/7306'>7306: Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), n.e.c. in chapter 73</a>"]
A --> H["<a href='/classifications/hs/v2017/7307'>7307: Tube or pipe fittings (e.g. couplings, elbows, sleeves), of iron or steel</a>"]
A --> I["<a href='/classifications/hs/v2017/7308'>7308: Structures of iron or steel and parts thereof; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures</a>"]
A --> J["<a href='/classifications/hs/v2017/7309'>7309: Reservoirs, tanks, vats and similar containers; for any material (excluding compressed or liquefied gas), of iron or steel, capacity exceeding 300l, whether or not lined or heat insulated</a>"]
A --> K["<a href='/classifications/hs/v2017/7310'>7310: Tanks, casks, drums, cans, boxes and similar containers, for any material (excluding compressed or liquefied gas), of iron or steel, capacity not exceeding 300l, whether or not lined or heat-insulated</a>"]
A --> L["<a href='/classifications/hs/v2017/7311'>7311: Containers for compressed or liquefied gas, of iron or steel</a>"]
A --> M["<a href='/classifications/hs/v2017/7312'>7312: Stranded wire, ropes, cables, plaited bands, slings and the like, of iron or steel, not electrically insulated</a>"]
A --> N["<a href='/classifications/hs/v2017/7313'>7313: Barbed wire of iron or steel; twisted hoop or single flat wire, barbed or not and loosely twisted double wire, of a kind used for fencing, of iron or steel</a>"]
A --> O["<a href='/classifications/hs/v2017/7314'>7314: Cloth (including endless bands), grill, netting and fencing, of iron or steel wire; expanded metal of iron or steel</a>"]
A --> P["<a href='/classifications/hs/v2017/7315'>7315: Chain and parts thereof, of iron or steel</a>"]
A --> Q["<a href='/classifications/hs/v2017/7316'>7316: Anchors, grapnels and parts thereof, of iron or steel</a>"]
A --> R["<a href='/classifications/hs/v2017/7317'>7317: Nails, tacks, drawing pins, corrugated nails, staples (not those of heading no. 8305) and the like, of iron or steel, with heads of other material or not, but excluding articles with heads of copper</a>"]
A --> S["<a href='/classifications/hs/v2017/7318'>7318: Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel</a>"]
A --> T["<a href='/classifications/hs/v2017/7319'>7319: Sewing and knitting needles, bodkins, crochet hooks, embroidery stilettos and similar articles, for use in the hand, of iron or steel; safety pins and other pins of iron or steel, not elsewhere specified or included</a>"]
A --> U["<a href='/classifications/hs/v2017/7320'>7320: Springs and leaves for springs, of iron or steel</a>"]
A --> V["<a href='/classifications/hs/v2017/7321'>7321: Stoves, ranges, grates, cookers (those with subsidiary boilers for central heating), barbecues, braziers, gas-rings, plate warmers and similar non-electric domestic appliances and parts, of iron or steel</a>"]
A --> W["<a href='/classifications/hs/v2017/7322'>7322: Radiators for central heating, not electrically heated and parts thereof, of iron or steel; air heaters, hot air distributors not electrically heated, with motor fan or blower</a>"]
A --> X["<a href='/classifications/hs/v2017/7323'>7323: Table, kitchen, other household articles and parts, of iron or steel; iron or steel wool; pot scourers and scouring or polishing pads, gloves and the like, of iron or steel</a>"]
A --> Y["<a href='/classifications/hs/v2017/7324'>7324: Sanitary ware and parts thereof, of iron or steel</a>"]
A --> Z["<a href='/classifications/hs/v2017/7325'>7325: Iron or steel; cast articles</a>"]
A --> BA["<a href='/classifications/hs/v2017/7326'>7326: Iron or steel; articles, n.e.c. in chapter 73</a>"]

    B --> BB["<a href='/classifications/hs/v2017/730300'>730300: Cast iron; tubes, pipes and hollow profiles</a>"]


    %% Color coordination by level

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    classDef level2 color:#000,fill:#e0a458,stroke:#333,stroke-width:1px
    classDef level3 color:#000,fill:#419d78,stroke:#333,stroke-width:1px
    classDef level4 color:#000,fill:#c04abc,stroke:#333,stroke-width:1px
    classDef level5 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef level6 color:#000,fill:#f1c40f,stroke:#333,stroke-width:1px
    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



  %% Apply classes
  class A level2
class B level4
class C level4
class D level4
class E level4
class F level4
class G level4
class H level4
class I level4
class J level4
class K level4
class L level4
class M level4
class N level4
class O level4
class P level4
class Q level4
class R level4
class S level4
class T level4
class U level4
class V level4
class W level4
class X level4
class Y level4
class Z level4
class BA level4
class BB level6

  class B highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class B highlight