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Official-source supplier research

Compare 15 Sheet-metal fabrication suppliers in Japan

Material and thickness are only the start. Processes, tolerance, weld standard, finish, inspection, and revision control prevent mismatched quotes.

Request quotes on one specificationSee all 15 suppliers
15
suppliers
5
comparison axes
22
official URLs checked
CARGO / SOURCE MAP2026.07.13

Sheet-metal fabrication

01Material and thickness
02Processes
03Critical tolerances
04Prototype and volume
05Finish and inspection
Official evidence onlyNo sponsored ranking
What the checkmarks mean

Fifteen suppliers per category were selected from official-site research. Every listed supplier has at least three high-confidence, source-linked public claims. Missing facts stay missing; a check means evidence was found, not that availability or fit is guaranteed.

01 / COMPARE

Compare all 15 Sheet-metal fabrication suppliers

A check means the supplier's official source supports that dimension. A dash means we did not fill the gap by inference.

SupplierLocationMaterial and thicknessProcessesCritical tolerancesPrototype and volumeFinish and inspectionPublic facts
01岡田鈑金株式会社Ibaraki✓✓✓✓✓11
02株式会社西野精器製作所Ibaraki✓✓✓✓✓11
03株式会社マカベAkita✓✓✓✓—8
04岡部工業株式会社Gunma✓✓✓✓✓11
05株式会社群協製作所Gunma✓✓✓✓✓11
06島田工業株式会社Gunma✓✓✓✓✓11
07株式会社林製作所Gunma✓✓✓✓✓11
08株式会社モハラテクニカGunma✓✓✓✓✓11
09株式会社大熊製作所Saitama✓✓✓✓✓11
10株式会社スズミKanagawa✓✓✓✓✓11
11株式会社ツガワKanagawa✓✓✓✓✓11
12株式会社フジプロテックKanagawa✓✓✓✓✓11
13株式会社キョウユウ技研Nagano✓✓✓✓✓11
14株式会社キンポーメルテックNagano✓✓✓✓✓11
15株式会社SANMATSUFukuoka✓✓✓✓✓11

02 / DECIDE

Five questions that make quotes comparable

Send the same controlled drawing package to every fabricator and require deviations, material substitutions, tooling, inspection, and freight to be itemized.

  1. 01

    Material and thickness

    Specify grade, thickness, temper, grain direction, and any material certificate requirement.

  2. 02

    Processes

    Separate cutting, punching, bending, welding, hardware insertion, and assembly.

  3. 03

    Critical tolerances

    Mark only critical characteristics and keep drawing revision and neutral CAD data controlled.

  4. 04

    Prototype and volume

    Request prototype, repeat-lot, tooling, and expedite prices separately.

  5. 05

    Finish and inspection

    Define coating, masking, appearance, measurement report, and outsourced-process responsibility.

03 / SPECIFY

Build one quote-ready specification

Use the same inputs for every supplier. This prevents a low headline price from hiding a different material, finish, quantity, or delivery condition.

Sheet-metal quote readiness

Make drawings, tolerances, and finishing quoteable

Open the specification builder
  1. 01Part / drawing revisionRequired for comparison
  2. 02MaterialRequired for comparison
  3. 03Thickness / key toleranceRequired for comparison
  4. 04ProcessesRequired for comparison
  5. 05Finish / inspectionRequired for comparison
  6. 06Order quantity / cadenceRequired for comparison
  7. 07Delivery location / deadlineRequired for comparison

04 / VERIFY

Trace every supplier back to official sources

These links are evidence, not affiliate placements. Supplier names and official pages are shown in research order without paid promotion.

METHODOLOGY / 2026.07.13

How this page was researched

Included

Active official site, known operating location, and at least three high-confidence public facts linked to first-party sources.

Not inferred

Missing prices, capacity, compliance, availability, and delivery terms stay missing. Contactability and private response data are not published.

Corrections

Send the page URL and a supporting official source. We verify changes against primary evidence before updating.

Request a correction →

05 / FAQ

Before you contact suppliers

Is this a supplier ranking?

No. This is an unordered research comparison based on public facts from official supplier sites. A listing is not an endorsement, score, or guarantee of fit.

How were the 15 Sheet-metal fabrication suppliers selected?

We selected active suppliers with an official site, a verified operating location, and at least three high-confidence public claims linked to official sources. Every published URL was rechecked on July 13, 2026.

Are prices, minimum lots, and lead times guaranteed?

No. Public commercial terms can be product-specific or change without notice. Use the checklist to request a current quote on identical specifications and delivery conditions.

How can I request a correction?

Send the supplier name, page URL, and supporting official source through the Sanka contact page. We review corrections against primary sources.

CARGO / NORMALIZED RFQ

One specification. Multiple suppliers. A comparison you can defend.

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