山内商事 List of Products and Services

This is a brush used for cleaning buried pipes. The white brush is made of nylon, while the black brush is a metal brush made of iron wire. Since the buried pipes are at least 10 meters long, they must be designed to allow cleaning from a distance that is out of reach. To achieve this, we have included circular rings on both sides to allow for wire connections. In order to make it easier to remove dirt, we have prepared two types of brushes: a resin brush and a metal brush, allowing you to choose the hardness of the brush. When using the metal brush, care must be taken to avoid damaging the piping. The diameter and length of the brushes can be changed according to your requirements. 【Features】 ■ The diameter and length of the brushes can be customized ■ Wire connection is possible ■ Can reach distances that are out of reach *For more details, please download the materials or contact us.

• Brush

We handle the design and manufacturing of all electrical materials and hardware, including frames, pull boxes, wiring ducts, through frames, decorative plates, anchor bolts, tread plates, copper bars, and more. For special items, small lots, single pieces, and additional processing—if you're unsure where to turn, leave it to us. We provide value beyond price, including short delivery times, cost reduction, and complex processing. 【Production Achievements - Selected Examples】 ■ Cable and distribution board protection ducts ■ Pull boxes ■ Openings and panel cuts ■ PVC ■ With handles ■ Protection boxes, etc. *For more details, please download the materials or contact us.

• Processing Contract
• Contract manufacturing

In the production of box ducts, it is more efficient to manufacture using only 2.3t instead of fabricating with 1.6t and applying angle reinforcements, as this can shorten delivery times and reduce costs. In precision sheet metal processing, the thinner the material, the lower the processing costs due to material expenses. This trend is particularly strong with high-cost materials like aluminum and stainless steel. However, despite using the same material, thicker sheets can sometimes be cheaper due to factors like availability and ease of procurement. For example, with SUS304, a commonly used stainless steel, 3.0mm thickness is more readily available and cheaper than using 2.5mm thickness. 【Features】 ■ Cost reduction ■ Improved work efficiency ■ Further shortening of delivery times *For more details, please download the materials or contact us.

• Processing Contract
• Contract manufacturing

There's no time to create drawings... I lack the know-how for strength calculations... I have handwritten concepts, but I can't create the drawings... In such cases, please leave it to Yamauchi Trading! We handle the design and manufacturing of all electrical installation materials and hardware, including frames, pull boxes, wiring ducts, penetration frames, decorative plates, anchor bolts, tread plates, copper bars, and more. We provide value beyond the price, including short delivery times, cost reductions, and complex processing. 【Features】 ■ Drawing from scratch ■ Strength calculations ■ Engineering ■ Handwritten drawings are also acceptable *For more details, please download the materials or contact us.

• Processing Contract
• Contract manufacturing

In situations where urgent specification changes or trouble responses are required, short delivery times are often demanded in the manufacturing field. Upon receiving your request for a quote, we will provide an initial response within 2 hours. If you are in the Osaka or Hanshin area, we promise the fastest delivery time in the region. We will respond to your "I want it right now!" 【Available Products - Selected Items】 ■ Frames ■ Pull boxes ■ Wire link ducts ■ Through frames ■ Decorative plates ■ Anchor bolts ■ Checker plates ■ Copper bars ■ All kinds of electrical materials ■ Hardware *For more details, please download the materials or contact us.

• Processing Contract
• Contract manufacturing

Custom orders. We accommodate small lots! I want to have just a few made for testing... I want to customize just this part... I need to make just one due to sudden damage or trouble... Yamauchi Trading will respond to these requests. We welcome small custom orders! We accept orders starting from just one piece! 【Features】 ■ Short delivery times for custom orders ■ Cost reduction ■ Difficult processing, etc. We will solve your problems. *For more details, please download the materials or contact us.

• Contract manufacturing
• Processing Contract

We accept processing of various steel materials and types, such as angles, channels, H-beams, and pipes, from single items to mass production. We can manufacture even without drawings, so please feel free to consult us. Additionally, we have extensive experience in processing pull boxes and ducts. We can accommodate custom dimensions not available in standard products, and we can produce various shapes and materials, including SS steel, ZAM, and stainless steel, with short lead times starting from one piece. Please feel free to contact us with your requests. 【Supported Materials】 ■ Carbon Steel ■ Aluminum ■ Stainless Steel ■ Non-Ferrous Metals ■ Lead, etc. *For more details, please download the PDF or contact us.

• Contract manufacturing
• Processing Contract