Harada Kogyo Co., Ltd. is a Coil Center which mainly processes and sells steel sheets and special steel sheets. The type and amount of handling are scales of eminent West Japan.
A Leveller machine processes coils into fixed scales and flat sheets, and a Sharing machine accurately processes them into smaller sheets. A Slitter machine processes coils into narrow coils (hoops).
In addition to steel processing, we offer total service, which includes transportation & warehousing, design & construction of logistics equipments, including steel racks.
With many varieties, Small lots, and Short delivery time, we will carefully fulfill these various customer requirements.
We conduct professional works for processing and trading of steel plates, initiating Just-In-Time Delivery with controlling accurately time, place, quantity & quality.

| Type | JIS Spec. | Usage |
| Normal Steel plates | SPHC-P, SPCC-SD, SECC, SEHC, SGHC, SGACC, SGAHC, SGCC, ZAM® | Light electrical components, Auto parts, Steel furniture, Agricultural machinery, etc. |
|---|---|---|
| Special Steel plates | SK2 - SK7, S35C - S55C S30CM - S75CM, SCM415 - SCM445 |
Auto parts, Machine part, Various tools |
| Others | Chromemate-free steel, Stainless steel, Steel tube, Steel angle, Steel flat bar, Punching metal sheet | |
* "ZAM" is a registered trademark of Nisshin Steel Co., Ltd. It is hot dip Zinc-Aluminum-Magnesium alloy coated steel.
ISO9001:2008
HQ, Sapporo, Tokyo, Osaka, Fukuyama, Fukuoka
Automobiles, Refrigerators, System Kitchens and more. There are many products made by steel plates around us. Integrated Steel Manufacturers have made these steel plates which are shipped in the shape of coils. These rolled steel plates are called steel coils, and usually weigh between 10 and 25 MT. They are too big for our customers to use. The Coil Center is responsible for sheeting or slitting them into proper shapes and weights, and delivering to automobile or electricity manufactures.
We process steel coils into the ordered shape. Extremely high technology is required to level or shape them accurately and effectively. The processing technology of Japanese Coil Centers is top class in the world and one of the important fundamentals of Japanese products.
We stock steel coils and plates to adjust gaps between demand and supply. The "KANBAN" system, which is famous in the automobile industry, doesn’t work without the stock service of the Coil Center. It is one of the most important functions, which enables very efficient supply management "Just in Time."
The minimum weight of steel coils to order for Integrated Steel Manufacturers is usually more than 10 MT. This is too big for ordinary customers, the Coil Center gathers and orders steel coils in full. The Coil Center is implacable for the logistics of Steel Plates.
We retain processing accuracy and ablate partial blemishes which often occur in steels coils. It is quite inefficient to ablate partial blemishes at the Integrated Steel Manufacturer, they usually ship steel coils containing impalpable blemishes. The Coil Center holds the function to preserve and manage quality.
Steel is an alloy in which the principal ingredient is iron, and artificially improves of the performance of iron's strength, toughness, magnetism, and heat resistance.
Iron produced only with a blast furnace is not suitable for industrial commodities. This is the reason why iron has low-viscosity and is too fragile for a lot of contained carbons. Iron changes into strong & sticky steel by removing impurities that cause fragility, such as carbon, phosphorus, sulfur. Most of the ironware used in daily life is made of steel.