Wood wool; wood flour

HS v2017 Code: 4405

Chapter	Heading	Sub-heading
44	05	n/a

Code	4405
Version	HS v2017
Hierarchy Level	4
Datasource	WCO
Chapter	44

Ancestor Codes: Wood and articles of wood; wood charcoal

This Code: Wood wool; wood flour

Child Codes: Wood; wood wool and wood flour

Sibling Codes (Nearest 5): Wood charcoal (including shell or nut charcoal), whether or not agglomerated; Wood in the rough, whether or not stripped of bark or sapwood, or roughly squared; Hoopwood; split poles; piles, pickets, stakes of wood, pointed, not sawn lengthwise; wooden sticks, roughly trimmed, not turned, bent, etc., suitable for walking sticks, umbrellas, tool handles, etc.; Railway or tramway sleepers (cross-ties) of wood; Wood sawn or chipped lengthwise, sliced or peeled, whether or not planed, sanded or end-jointed, of a thickness exceeding 6mm

About wood wool; wood flour

HS code 4405 covers wood wool and wood flour, which are important materials used in a variety of industries. Wood wool is a coarse, fibrous material made by mechanically shredding or tearing wood, while wood flour is a fine, powdery wood material produced by grinding or milling wood. These products find applications in areas such as insulation, absorbents, fillers, and composite materials, playing a crucial role in sectors like construction, manufacturing, and agriculture.

Production process

The production of wood wool and wood flour typically involves mechanical processing of wood raw materials. Wood wool is made by passing logs or wood blocks through specialized machines that tear or shred the wood into long, thin fibers. Wood flour, on the other hand, is produced by grinding or milling wood chips, sawdust, or other wood waste into a fine powder using equipment like hammer mills or disc refiners.

Production inputs

The main inputs required for the production of wood wool and wood flour are various types of wood raw materials, such as 4401 Wood in chips or particles, 4403 Wood in the rough, or 4407 Wood sawn or chipped lengthwise. Depending on the specific application, the wood may be sourced from softwood or hardwood species. Additionally, specialized machinery and equipment, such as shredders, grinders, and milling machines, are essential for the manufacturing process.

Production outputs

The primary outputs of HS code 4405 are wood wool and wood flour, which are then used as inputs in various industries. Wood wool finds applications in 6806 Slag wool, rock wool and similar mineral wools; exfoliated vermiculite, expanded clays, foamed slag and similar expanded mineral materials; mixtures and articles of heat-insulating, sound-insulating or sound-absorbing mineral materials, 9401 (Seats (other than those of heading 94.02), whether or not convertible into beds, and parts thereof), and 9403 Other furniture and parts thereof. Wood flour is used as a filler or additive in 3506 Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg, 3907 Polyacetals, other polyethers and epoxide resins, in primary forms; polycarbonates, alkyd resins, polyallyl esters and other polyesters, in primary forms, and 4410 (Particle board, oriented strand board (OSB) and similar board (for example, waferboard) of wood or other ligneous materials, whether or not agglomerated with resins or other organic binding substances).

Family tree for wood wool; wood flour

    graph LR
    A["<a href='/classifications/hs/v2017/44'>44: Wood and articles of wood; wood charcoal</a>"]
A --> B["<a href='/classifications/hs/v2017/4405'>4405: Wood wool; wood flour</a>"]

    A --> C["<a href='/classifications/hs/v2017/4401'>4401: Fuel wood, in logs, billets, twigs, faggots or similar forms; wood in chip or particles; sawdust and wood waste and scrap, whether or not agglomerated in logs, briquettes, pellets or similar forms</a>"]
A --> D["<a href='/classifications/hs/v2017/4402'>4402: Wood charcoal (including shell or nut charcoal), whether or not agglomerated</a>"]
A --> E["<a href='/classifications/hs/v2017/4403'>4403: Wood in the rough, whether or not stripped of bark or sapwood, or roughly squared</a>"]
A --> F["<a href='/classifications/hs/v2017/4404'>4404: Hoopwood; split poles; piles, pickets, stakes of wood, pointed, not sawn lengthwise; wooden sticks, roughly trimmed, not turned, bent, etc., suitable for walking sticks, umbrellas, tool handles, etc.</a>"]
A --> G["<a href='/classifications/hs/v2017/4406'>4406: Railway or tramway sleepers (cross-ties) of wood</a>"]
A --> H["<a href='/classifications/hs/v2017/4407'>4407: Wood sawn or chipped lengthwise, sliced or peeled, whether or not planed, sanded or end-jointed, of a thickness exceeding 6mm</a>"]
A --> I["<a href='/classifications/hs/v2017/4408'>4408: Sheets for veneering (including those obtained by slicing laminated wood), for plywood or for similar laminated wood and other wood, sawn lengthwise, sliced or peeled, planed or not, sanded, spliced or end-jointed, of a thickness not exceeding 6 mm</a>"]
A --> J["<a href='/classifications/hs/v2017/4409'>4409: Wood (including strips, friezes for parquet flooring, not assembled), continuously shaped (tongued, grooved, v-jointed, beaded or the like) along any edges, ends or faces, whether or not planed, sanded or end-jointed</a>"]
A --> K["<a href='/classifications/hs/v2017/4410'>4410: Particle board, oriented strand board (OSB) and similar board (e.g. waferboard) of wood or other ligneous materials, whether or not agglomerated with resins or other organic binding substances</a>"]
A --> L["<a href='/classifications/hs/v2017/4411'>4411: Fibreboard of wood or other ligneous materials, whether or not bonded with resins or other organic substances</a>"]
A --> M["<a href='/classifications/hs/v2017/4412'>4412: Plywood, veneered panels and similar laminated wood</a>"]
A --> N["<a href='/classifications/hs/v2017/4413'>4413: Densified wood, in blocks, plates, strips or profile shapes</a>"]
A --> O["<a href='/classifications/hs/v2017/4414'>4414: Wooden frames; for paintings, photographs, mirrors or similar objects</a>"]
A --> P["<a href='/classifications/hs/v2017/4415'>4415: Packing cases, boxes, crates, drums and similar packings, of wood; cable-drums of wood; pallets, box pallets and other load boards, of wood; pallet collars of wood</a>"]
A --> Q["<a href='/classifications/hs/v2017/4416'>4416: Casks, barrels, vats, tubs and other coopers' products and parts thereof, of wood, including staves</a>"]
A --> R["<a href='/classifications/hs/v2017/4417'>4417: Tools, tool bodies, tool handles, broom or brush bodies and handles, of wood; boot or shoe lasts and trees, of wood</a>"]
A --> S["<a href='/classifications/hs/v2017/4418'>4418: Builders' joinery and carpentry of wood, including cellular wood panels, assembled flooring panels, shingles and shakes</a>"]
A --> T["<a href='/classifications/hs/v2017/4419'>4419: Tableware and kitchenware, of wood</a>"]
A --> U["<a href='/classifications/hs/v2017/4420'>4420: Wood marquetry and inlaid wood; caskets and cases for jewellery or cutlery, and similar articles of wood; statuettes and other ornaments of wood; wooden articles of furniture not falling in chapter 94</a>"]
A --> V["<a href='/classifications/hs/v2017/4421'>4421: Wooden articles n.e.c. in heading no. 4414 to 4420</a>"]

    B --> W["<a href='/classifications/hs/v2017/440500'>440500: Wood; wood wool and wood flour</a>"]


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class E level4
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class G level4
class H level4
class I level4
class J level4
class K level4
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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 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
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