Ordering roller chain from China without specifying the required delivery documentation is a common procurement mistake that leads to disputes, delays, and quality uncertainty after delivery. The documents that should accompany a roller chain delivery are not bureaucratic formalities — they are the quality assurance record that verifies the chain you received is the chain you ordered, made from the materials specified, at the quality level agreed, and tested to the breaking loads claimed on the product label.
The Five Essential Documents
A complete and acceptable roller chain delivery from China should include the following five documents as a minimum. A delivery that does not include all five should be queried before the goods are accepted.
| Document | Purpose | Minimum Content Required |
|---|---|---|
| Packing List | Identifies the quantity, part number, and packaging of the delivered goods | Chain type, pitch, chain number, number of links per box or coil, quantity of boxes or coils, total link count or chain length, packaging dimensions and gross weight |
| Commercial Invoice | Financial transaction record | Chain specification and description, quantity, unit price, total value, currency, Incoterm, supplier and buyer details, invoice number and date |
| Certificate of Origin | Declares the country of manufacture for customs and trade compliance | Country of manufacture, exporter details, goods description, HS tariff code, certification body signature |
| Material Test Certificate / Mill Certificate | Certifies the steel material used in chain manufacture | Steel grade or composition, mechanical properties (yield strength, tensile strength, elongation), heat number traceability, mill name, and test date |
| Tensile Strength Test Certificate / Chain Test Report | Certifies that the chain has been tested to the specified breaking load | Chain specification, test standard (ANSI B29.1 or ISO 606), test load applied, test result, test date, batch or heat number |
The Material Test Certificate: What to Verify
The material test certificate should trace the steel used in the chain links, pins, and rollers back to the steel mill that produced it. Key items to verify: the steel grade or composition table should show carbon content, manganese, silicon, and key alloying elements consistent with a chain-grade carbon steel (typically 10B21, 10B33, SCM series, or equivalent); the mechanical properties (tensile strength and yield strength) should be consistent with chain application requirements; the heat number on the certificate should be traceable to the production batch received. If the supplier provides a generic material certificate not specific to the delivered batch, request a batch-specific certificate.
The Chain Test Report: What to Verify
The chain test report certifies that a sample from the delivered batch has been tested to the breaking load specified in ANSI B29.1 or ISO 606. Verify: the test standard is clearly identified; the tested chain specification matches the specification delivered; the test result meets the minimum tensile strength required by the standard; and the test date and batch or lot number link the certificate to the delivered goods. A test certificate for a different chain specification, a different batch, or a test conducted months before shipment does not provide meaningful assurance for the delivered goods.
How to Specify Required Documents in the Purchase Order
Include this clause in the purchase order conditions: “The following documents are required with every delivery and are a condition of payment: (1) packing list; (2) commercial invoice; (3) certificate of origin; (4) material test certificate tracing to the production batch; (5) chain tensile strength test certificate per ANSI B29.1 / ISO 606. Non-supply of any required document within 14 days of delivery will be treated as a contractual shortfall subject to payment hold.”
Additional Documents for Specific Applications
For food processing applications: a declaration that the chain materials and surface treatments are suitable for food contact, and an MSDS/SDS for any chain lubricant applied during manufacture or packaging. For OEM supply with specific quality management requirements: an inspection report from a third-party inspection agency (Bureau Veritas, SGS, Intertek, or similar). For mining applications in Australian coal mines: material compliance documentation specific to the relevant state mining regulation.
EverPower Roller Chains Australia provides a complete documentation package with every roller chain delivery, including material certificates, tensile test reports, and certificates of origin. Contact +61 2 9708 3322 or [email protected] to discuss documentation requirements for your order.
+61 2 9708 3322 | [email protected] | 27 Harley Crescent, Condell Park NSW 2201