# Sourcing SUS 347 Pipe for Japan: Separate Grade, Origin and Supplier

Canonical: https://jundapipe.com/en-CA/blog/sus347-pipe-sourcing-japan

Review SUS 347 pipe sourcing for Japan by separating material compliance, manufacturing origin and supplier location, with an evidence checklist.

When sourcing SUS 347 pipe for a project in Japan, verify three separate facts: the required material specification, the manufacturing origin and the contracting supplier. A Japanese grade designation does not establish manufacture in Japan, and delivery to Japan does not establish a Japanese factory or local stock.

If the project requires Japanese manufacture, state that origin requirement explicitly and request supporting documents. If imported material is acceptable, define the specification and approval process separately from the destination.

## Which company performs each role?

| Role                  | Evidence to request                                 | What it does not establish alone    |
| --------------------- | --------------------------------------------------- | ----------------------------------- |
| Contracting seller    | Legal entity and quotation details                  | Where the pipe was manufactured     |
| Manufacturing mill    | Mill identity and order-specific material records   | Local warehousing in Japan          |
| Distributor or agent  | Confirmed contractual role and stock identification | Manufacture by that distributor     |
| Importer or consignee | Agreed delivery and documentation responsibilities  | Technical acceptance by the project |

Use this matrix to review an offer before comparing price. It is a procurement method, not a statement of Japanese customs or regulatory requirements. The project and importer must determine the applicable local requirements.

## How should the material requirement be written?

Include the complete JIS product standard, edition, grade symbol, dimensions, condition and required inspection. If an ASTM alternative is allowed, state the approval process rather than adding an unexplained slash between designations.

[IMOA](https://www.imoa.info/molybdenum-uses/molybdenum-grade-stainless-steels/austenitic-stainless-steel.php) associates 347 with UNS S34700, while [ASTM A312/A312M-25](https://store.astm.org/a0312_a0312m-25.html) describes its own pipe scope and grade context. These references help distinguish material naming from product requirements. Neither establishes full compliance with the Japanese specification in a particular project.

Ask for a sample document format during quotation and order-specific documents for acceptance. A sample certificate demonstrates presentation only; it does not certify the future batch.

## What should a Japan-bound enquiry contain?

State the delivery destination, any mandatory manufacturing-origin restriction, the permitted supplier roles and whether a local stock offer is required. Add the technical specification, dimensions, quantity, requested delivery date, inspection requirements and required document language.

Request separate confirmation of technical compliance, origin, proposed delivery terms and any deviations. If the supplier cannot confirm a field, keep it open. Do not infer Japan market experience from an English page or a search-result snippet.

## How does Junda fit this sourcing review?

Junda Pipe identifies itself as Zhejiang Junda Steel Pipe Manufacturing Co., Ltd. in China. [Company source](https://jundapipe.com/about) It should be evaluated on that identity. Its catalogue includes [347H seamless pipe](https://jundapipe.com/products/347h-seamless-stainless-steel-pipe), which does not by itself confirm SUS 347 supply, Japanese manufacture, a Japanese office or a completed delivery to Japan. [Catalogue source](https://jundapipe.com/products)

Where imported supply is permitted, send the exact requirement through the [contact page](https://jundapipe.com/contact) for confirmation. Where Japanese origin is mandatory, the documented origin requirement remains decisive. For a detailed material-name check, use the [SUS 347 and UNS S34700 guide](https://jundapipe.com/blog/sus347-uns-s34700-designation-check).