Tin bars, rods, profiles and wire

1. Scope and Applicability

Gate-to-gate production of tin or declared tin-alloy bars, rods, solid profiles and wire from received metal feedstock through casting and/or extrusion, rolling, drawing, straightening, cutting and finishing. Excludes unwrought tin, sheet, strip, foil, powder, tubes, fabricated articles, use and end-of-life.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.basic-metals.tin-bars-rods-profiles-and-wire
classification_refs	CPC 3.0 41547
covered_products	Tin and declared tin-alloy bars, rods, solid profiles and wire
excluded_products	Unwrought tin; sheet, strip, foil, powder, tubes and fabricated articles
representative_product	Tin rod
production_route	Declared casting/forming/finishing route
market_state	Saleable semi-finished solid product at factory gate

3. Reference Flow

Field	Value
What	Conforming saleable covered product
How much	1 kg net saleable product
How well	Composition, form, dimensions, temper, surface and specification declared
How long or cycle	Reporting-period production campaign
reference_flow_link	Net factory-gate mass after internal returns and rejects

Field	Value
Reference amount	1
Reference product flow	Tin Rod e9c72b13-0d60-4d67-a1c9-b0c963ec62cf
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	form; composition; dimensions; temper; surface; route; geography; period

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_mass	mass flows	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Use a consistent mass basis and normalize net output to 1 kg.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Received refined tin or declared tin-alloy feedstock
starting_condition_role	Upstream production represented by linked input datasets
product_classification_scope	Covered solid semi-finished forms
recursive_input_rule	Record same-category off-site feedstock once; internal scrap does not cross the boundary
upstream_dataset_requirement	Representative datasets for purchased inputs
disclosure	Declare route, alloy, internal scrap loop and surface treatment

rule_id	Applies to	Rule	source_ids
boundary_gate_to_gate	foreground system	Include on-site forming and finishing; exclude use and end-of-life.	un-cpc-3-0-structure-2025

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
tin_semifabrication	Tin semi-fabrication	required	Always	foreground production	1 kg net product

Process: Tin semi-fabrication (tin_semifabrication)

Inputs

Product flows

Tin feedstock (tin_feedstock)

Record the received mass of the declared feedstock grade crossing the factory boundary.

• Selected flow: Tin metal feedstock
• Flow property / unit: Mass / kg
• Amount rule: measured received mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_mass
• Sources:

Purchased electricity (electricity)

Record electricity consumed by included production equipment and allocated auxiliaries.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: metered attributable electricity
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy
• Sources:

Waste flows

Elementary flows

Outputs

Product flows

Reference product (reference_product)

Record net conforming product mass after internal returns and rejects.

• Selected flow: Tin Rod e9c72b13-0d60-4d67-a1c9-b0c963ec62cf
• Flow property / unit: Mass / kg
• Amount rule: fixed reference amount
• Value mode: Fixed value (fixed_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: 1 kg net product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Identity reference (identity_reference)
• Collection protocol:
• Sources:

Waste flows

Tin-bearing process scrap (process_scrap)

Record only segregated scrap leaving the foreground boundary; exclude internal returns.

• Selected flow: Tin scrap 72bbff5c-c26f-4b7b-971e-df634b72ea28
• Flow property / unit: Mass / kg
• Amount rule: weighed off-site mass; exclude internal returns
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_mass
• Sources:

Elementary flows

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_subdivision	shared production	Subdivide first; allocate residual shared burdens by net mass and disclose sensitivity.

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_mass	tin_semifabrication	material mass	scale records	time; grade; gross; tare; disposition	calibrated scales	kg	each lot	representative 12 months or disclosed campaign	included lines	sum and normalize	calibration and reconciliation
cp_energy	tin_semifabrication	electricity	meter records	meter; period; energy	submeter or documented allocation	kWh or MJ	monthly	production period	included equipment	subtract exclusions and normalize	invoices and meter checks

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
normalize	all rows	allocated quantity divided by net product mass	quantity; net mass	per kg quantity

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_balance	metal flows	Reconcile feedstock, product, scrap, stock change and internal returns.	scale records and reconciliation

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference	reference flow	Require 1 kg and all qualifiers.
validate_inventory	inventory	Require atomic flows, UUID status, aligned periods and mass balance.

10. Published Dataset Profile

Field	Value
dataset_role	foreground production dataset
downstream_use	process and lifecyclemodel construction
allowed_use	declared covered product and route
excluded_use	upstream refining, use and end-of-life
required_metadata	form; composition; dimensions; route; geography; period; allocation
required_quality_disclosure	metering, mass balance, unresolved UUIDs and gaps
update_trigger	material boundary, route, alloy, energy or yield change

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-structure-2025	Official guidance (official_guidance)	CPC Version 3.0 Structure, 30 June 2025; https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv; retrieved 2026-09-04	Verified original product identity text