FACTORY STORIES
Mountech Co., Ltd. interview
The people and thinking behind the numbers, in our on-site interviews.
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78 years of experience in angle frame manufacturing. A steel fabricator known for precise corners.
- Capable of processing sizes up to 1.5m x 3.0m
- Securing 400 tsubo (approx. 1,320 sqm) of welding and assembly space
- Monthly production record of 100 angle frames / 200 stands
-
Industrial Angle Frame Manufacturing
- 株式会社マウンテック
A 78-year-old steel fabricator consulted nationwide, achieving a total length tolerance of ±2mm for 10-panel aligned frames.
±2mmTotal length accuracy for 8,000mm 10-panel aligned frames
+0〜-1.5mmIndividual tolerance
From 1 unitAvailable from single units / prototyping
78 yearsEstablished. Distribution board enclosures nationwide
CONTENTS
- Do you have these challenges?
- 3 Reasons Why We Are Chosen
- Approach to Precision and Tolerance
- Manufacturing Cases
- Supported Structural Steel Sizes
- Equipment List
- Scope of Services
- Manufacturing Process
- Quality Assurance & Inspection System
- Company Profile
- Flow for Starting Business
- Frequently asked questions
Do you have these challenges?
The reasons for seeking a supplier for angle frames can generally be summarized into six points.
- Your long-standing outsourcing partner has ceased steel fabrication, and you are looking for an alternative.
- You have been rejected for large sizes or structures that cannot be produced in-house.
- The total length does not match when aligned / distortion occurs.
- Dimensions vary due to lot differences in structural steel.
- There is no company that accepts special frames for just one unit.
- You are having trouble with holes being blocked after hot-dip galvanizing.
For all these, please leave it to Mountech.
3 Reasons Why We Are Chosen
1. Accumulation of Angle Frame Expertise, Rare Nationwide
There are not many companies nationwide that specialize in angle frames. Therefore, inquiries come from across regions. Since our establishment, we have been manufacturing enclosures for distribution boards (cubicles) and have received orders from electrical manufacturers nationwide.
2. Precision Design that Accounts for Lot Variations in Structural Steel
Angle steel and channel steel can vary in angle and side length by approximately ±1.5mm depending on the lot. We manufacture by anticipating this and perform distortion removal at the final stage. We ensure precision not only in outer diameter and hole pitch but also in angle and diagonal.
3. One-Stop Service from Primary Processing to Post-Plating Treatment
We handle everything in-house, from purchasing and cutting 11m standard length materials. We provide integrated support for baking paint, hot-dip galvanizing, and even re-drilling holes and re-tapping that were blocked by plating.
Although sometimes referred to as a "sheet metal shop," our actual organizational structure is more geared towards steel fabrication. Approximately half of our employees are involved in welding, and most of them are accustomed to handling structural steel such as angle steel and channel steel.
Approach to Precision and Tolerance
How can we achieve ±2mm for 8,000mm? Mountech reveals how we achieve precision.
| Individual Tolerance | Approx. +0 to -1.5mm |
|---|---|
| Total Length Accuracy for Aligned Frames | ±2mm (W800 × 10 panels = 8,000mm) |
| Lot-to-Lot Variation in Structural Steel | ±1.5mm in angle and side length |
| Items to be Fabricated with Precision | Outer diameter / Hole pitch / Angle / Diagonal / Total length |
Premise: Structural Steel is Not "Identical Material"
Angle steel and channel steel can vary in angle and side length by approximately ±1.5mm depending on the lot. If this premise is ignored during assembly, even if individual units are correct, the total length will be off the moment they are aligned. Mountech manufactures by anticipating these variations.
Where to Absorb Variations
Cutting Precision
Cutting 11m standard length materials in-house. Cutting dimensions are determined based on actual measurements for each lot.
Hole Drilling
Using ironworker and CO2 laser. Hole positions are determined assuming connection for aligned frames.
Assembly Order
Considering the optimal assembly order to prevent cumulative errors. Also mindful of the relationship between the main body and the base.
Final Distortion Removal
Completely removing welding distortion in the final process. This is where angle, diagonal, and total length are finalized.
Individual Unit Precision and Aligned Frame Precision are Different
For individual units, we ensure precision not only in outer diameter and hole pitch but also in angle and diagonal. For aligned frames, we consider what needs attention to achieve accurate total length dimensions during manufacturing. We design including the relationship between the main body and the base.
Reason for Being Called "The Company that Makes Precise Corners"
The need to precisely achieve the diagonal, angle, and finish of all six faces gave rise to this name.
[Photo Required] Actual Measurement Photo Inspection and measurement work (
Actual measurement using calipers/scales, etc.
)
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alt: "Actual measurement inspection of angle frame total length and diagonal"
Actual measurement using calipers/scales, etc.
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alt: "Actual measurement inspection of angle frame total length and diagonal"
Manufacturing Cases
Please see the range of our capabilities, in order from stands → large frames → aligned frames → channel bases.
Irregular Angle Stand
- Application
- Data center stand
- Dimensions
- 1,300(W)×750(H)×650(D)
- Material
- L7×75×100 / L6×65×65
- Surface Treatment
- Baking paint
- Quantity
- 200 units
Outdoor Cubicle Enclosure
- Application
- Extra-high voltage panel
- Dimensions
- 6500x2500x2000
- Material
- L6x50x50
- Surface Treatment
- Baking paint
- Quantity
- 5-panel unit
Large Substation Panel
- Application
- For power plants
- Dimensions
- 12,000×(1,750+650)×1,800
- Accuracy
- Total length ±2mm
- Surface Treatment
- Baking paint
- Quantity
- 8-segment frame
Supported Structural Steel Sizes
Listed based on JIS G 3192 standard sizes. Please consult us for sizes not listed.
Equal-Leg Angle Steel (Angle)
| Leg × Leg | Thickness t | Main Applications |
|---|---|---|
| 25×25 / 30×30 / 40×40 | 3 〜 5 | Small frames / Reinforcement materials |
| 45×45 / 50×50 | 4 〜 6 | Small frames |
| 60×60 / 65×65 | 4 〜 8 | Main for distribution board enclosures (L-65×65×6) |
| 70×70 / 75×75 / 80×80 | 6 〜 12 | Medium frames / Stands |
| 90×90 / 100×100 | 7 〜 13 | Large frames / Channel bases |
| 120×120 / 130×130 | 8 〜 15 | Large stands / Base frames |
| 150×150 / 175×175 | 12 〜 19 | Heavy-duty stands |
| 200×200 / 250×250 | 15 〜 35 | Available |
Unequal-Leg Angle Steel
| Leg × Leg | Thickness t | Main Applications |
|---|---|---|
| 90×75 / 100×75 | 7 〜 10 | Main for distribution board enclosures (L-100×75×7) |
| 125×75 / 125×90 | 7 〜 13 | Large frames |
| 150×90 / 150×100 | 9 〜 12 | Heavy-duty stands |
| 200×90 / 250×90 / 300×90 | 9 〜 16 | Available |
Channel Steel (Channel)
| Height × Width | Thickness t1 × t2 | Main Applications |
|---|---|---|
| 75×40 / 100×50 | 5×7 / 5×7.5 | Small bases |
| 125×65 / 150×75 | 6×8 / 6.5×10 | Main for channel bases |
| 180×75 / 200×80 / 200×90 | 7×10.5 〜 8×13.5 | Large bases / Base frames |
| 250×90 / 300×90 / 380×100 | 9×13 〜 13×16.5 | Available |
| Material | Steel (Angle steel, Channel steel, Steel plate) / SUS304 / Aluminum |
|---|---|
| Material Procurement | We purchase 11m standard length materials and perform cutting in-house. Cut materials can also be purchased. Other standard length materials are also available for purchase. |
| Frequently Handled Sizes | Equal-leg angle steel 6×65×65 / 6×50×50 / Unequal-leg angle steel 5×65×40 / Channel steel 5×50×100 |
Equipment List
All main equipment supports 5'×10' (1,524×3,048mm) sizes. Our equipment configuration is designed for large-scale steel fabrication and sheet metal.
| Equipment | Capacity / Specifications | Main Processes |
|---|---|---|
| Ironworker | 45ton | Cutting and drilling of structural steel |
| Shearing machine | 5'×10' compatible | Cutting of steel plates |
| Turret punch press | 5'×10' compatible | Punching of steel plates |
| Press brake | 5'×10' compatible, 175ton | Bending |
| CO2 laser | 5'×10' compatible, 3.2kW | Processing of structural steel |
Welding & Assembly
| Welding Space | Approx. 400 tsubo (approx. 1,320 sqm) (Site 1,500 tsubo) |
|---|---|
| Features | Flexible layout allows for large and irregularly shaped frames. |
| Structure | Out of approx. 30 employees, approx. 15 (half) are involved in welding. |
Surface Treatment
| Baking Paint | Several partner companies available. Within 5 minutes by car. |
|---|---|
| Hot-Dip Galvanizing | A large plating company is located 20 minutes away by car, allowing for short lead times. |
| Post-Plating Treatment | Re-drilling holes blocked by plating / Re-tapping / Re-filling drainage holes |
[Photo Recommended] Overall view of welding space (approx. 40
0 tsubo)
alt: "Mountech's welding space approx. 400 tsubo"
0 tsubo)alt: "Mountech's welding space approx. 400 tsubo"
Scope of Services
This is a list to help you determine "if we can do it" during the consideration phase.
| Example Frame Sizes | Width 800 × Depth 2,000 × Height 2,300 (Other sizes also available) |
|---|---|
| Maximum Supported Dimensions / Weight | 3,000×3,000×6,000 for a single panel |
| Tolerance | +0 to -1.5mm / Total length ±2mm for 8,000mm 10-panel aligned frames |
| Quantity | From 1 unit |
| Surface Treatment | Baking paint / Hot-dip galvanizing / Post-plating hole drilling, tapping, and drainage hole treatment |
| Supported Products | Various distribution boards such as outdoor cubicles / indoor cubicles / load centers / control centers, control panels, operation panels, information display panels, monitoring panels, desk-type operation panels, other heavy electrical equipment, and general sheet metal products. Channel bases, stands, base frames. |
| Delivery | Nationwide delivery available |
Manufacturing Process
We explicitly state "distortion removal" and "post-plating treatment" as independent processes. This is because there are certainly procurement managers who face difficulties with these.
Drawing Receipt
Accepting PDF, DXF, photos, and sketches
Review & Quotation
Response typically within 1 week
Primary Processing
Cutting and drilling of 11m standard length materials (Ironworker / CO2 laser)
Welding & Assembly
Flexible layout configuration in approx. 400 tsubo of welding space
Distortion Removal
Absorbing lot variations in structural steel in the final process. Fabricating angle, diagonal, and total length with precision
Painting / Hot-Dip Galvanizing
Baking paint to a partner company 5 minutes away by car. Plating to a partner company 20 minutes away by car
Post-Plating Treatment
Re-drilling blocked holes / Re-tapping / Re-filling drainage holes
Inspection
Outer diameter / Hole position / Angle / Diagonal / Total length
Shipment
Nationwide delivery available
Quality Assurance & Inspection System
| Inspection Items | Outer diameter / Hole position / Angle / Diagonal / Total length |
|---|---|
| Measuring Instruments Used | Scale / Calipers |
| Inspection Records / Certificates | Check-off on drawings |
| Material Certificates (Mill Sheets, etc.) | Mill sheets can be issued |
Company Profile
- Company
- Mountech Co., Ltd.
- Address
- 〒496-0025 20, Shinmei, Nakaisshiki-cho, Tsushima-shi, Aichi, Japan
- Website
- https://www.moun-tec.com/
| Established | 78 years ago. Since then, we have been manufacturing distribution board enclosures and receiving orders from electrical manufacturers nationwide. |
|---|---|
| Employees | Approx. 30 (of which approx. 15 are involved in welding) |
| Age Demographics | 30% are in their teens to 30s |
| Site Area | Total factory area 600 tsubo, of which welding space is approx. 400 tsubo |
| System | Continuously working to eliminate bottlenecks by promoting multi-skilling. |
| Location | 20 Shinmei, Nakaisshiki-cho, Tsushima City, Aichi Prefecture, Japan (5 minutes by car from Kanie IC) |
Ensuring that no process can only be performed by a specific craftsman is our preparation to maintain supply.
Flow for Starting Business
New business relationships are welcome. You can start small.
From Prototyping & Small-Lot Production
For the first order, we can handle from 1 unit or prototyping.
NDA Conclusion
Confidentiality of drawings and specifications will proceed after concluding an NDA.
Opening a Business Account & Partner Company Registration
Account opening after providing supplier survey form
Factory Tour
If you wish to "decide after seeing the site first," please visit our company.
Frequently asked questions
アングルフレームは1個からでも製作してもらえますか？
はい。1個からお受けしています。歪な形状の特殊枠も日常的に製作しています。
配電盤の列盤で全長精度はどの程度出せますか？
W800×10面＝8,000mmの列盤で全長±2mmに収めています。単体公差は+0〜-1.5mmです。
溶融亜鉛めっき後の穴あけ・タップ処理は対応できますか？
対応可能です。めっきで塞がった穴の開け直し、タップの切り直し、水抜き穴の埋め直しまで社内で行います。
取引先の製缶会社が廃業してしまいました。引き継いで製作できますか？
可能です。既存図面からの製作、図面がない場合の現物からの製作もご相談ください。創業78年、全国の電機メーカーとの取引実績があります。
Contact this factory
Contact Mountech Co., Ltd. directly. Send your drawings if you have them — a photo or sketch is enough to start.