Tubes, pipes and hollow profiles, of cast iron

HS v2022 Code: 7303

About tubes, pipes and hollow profiles, of cast iron

HS code 7303 covers the production and trade of tubes, pipes, and hollow profiles made from cast iron. This industry is a crucial component of the broader metal manufacturing sector, providing essential materials for a wide range of applications across various industries. Cast iron tubes and pipes are valued for their durability, corrosion resistance, and ability to withstand high pressures, making them indispensable in sectors such as construction, infrastructure, and industrial equipment manufacturing.

Production process

The production of cast iron tubes and pipes typically involves several key steps. First, the raw materials, including pig iron and scrap metal, are melted in a furnace to create the molten cast iron. This molten metal is then poured into molds or extruded through a die to form the desired tubular shape. Depending on the specific application, the cast iron tubes may undergo additional processing, such as heat treatment, coating, or machining, to enhance their properties and performance.

Production inputs

The main inputs required for the production of cast iron tubes and pipes include pig iron, scrap metal, and various alloying elements such as carbon, silicon, and manganese. Additionally, the industry relies on specialized casting and extrusion equipment, as well as energy sources like electricity or natural gas to power the production processes. Skilled labor, including foundry workers, machine operators, and quality control personnel, is also a crucial input for this industry.

Production outputs

The primary outputs of the cast iron tubes and pipes industry are the various types of tubes, pipes, and hollow profiles that are used in a wide range of applications. These products may be 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 8413 Pumps for liquids, whether or not fitted with a measuring device; liquid elevators, among others, depending on the specific requirements of the end-user.

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

    graph LR
    A["<a href='/classifications/hs/v2022/73'>73: Iron or steel articles</a>"]
A --> B["<a href='/classifications/hs/v2022/7303'>7303: Tubes, pipes and hollow profiles, of cast iron</a>"]

    A --> C["<a href='/classifications/hs/v2022/7301'>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/v2022/7302'>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/v2022/7304'>7304: Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel</a>"]
A --> F["<a href='/classifications/hs/v2022/7305'>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/v2022/7306'>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/v2022/7307'>7307: Tube or pipe fittings (e.g. couplings, elbows, sleeves), of iron or steel</a>"]
A --> I["<a href='/classifications/hs/v2022/7308'>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/v2022/7309'>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/v2022/7310'>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/v2022/7311'>7311: Containers for compressed or liquefied gas, of iron or steel</a>"]
A --> M["<a href='/classifications/hs/v2022/7312'>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/v2022/7313'>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/v2022/7314'>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/v2022/7315'>7315: Chain and parts thereof, of iron or steel</a>"]
A --> Q["<a href='/classifications/hs/v2022/7316'>7316: Anchors, grapnels and parts thereof, of iron or steel</a>"]
A --> R["<a href='/classifications/hs/v2022/7317'>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/v2022/7318'>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/v2022/7319'>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/v2022/7320'>7320: Springs and leaves for springs, of iron or steel</a>"]
A --> V["<a href='/classifications/hs/v2022/7321'>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/v2022/7322'>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/v2022/7323'>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/v2022/7324'>7324: Sanitary ware and parts thereof, of iron or steel</a>"]
A --> Z["<a href='/classifications/hs/v2022/7325'>7325: Iron or steel; cast articles</a>"]
A --> BA["<a href='/classifications/hs/v2022/7326'>7326: Iron or steel; articles, n.e.c. in chapter 73</a>"]

    B --> BB["<a href='/classifications/hs/v2022/730300'>730300: Cast iron; tubes, pipes and hollow profiles</a>"]


    %% Color coordination by level

    classDef level1 color:#000,fill:#a8f9ff,stroke:#333,stroke-width:2px
    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