Business Guide Top > Stainless Steel Processing / Titanium Processing

Stainless Steel Processing / Titanium Processing

Our services are compatible with a wide range of customized products, thanks to our technical expertise gained through experience of installing equipment for pharmaceutical plants and semiconductor plants

At Nissho Astec, we understand the differences in each requirement required by every single plant and also thoroughly acknowledge the differences among various material properties, and perform integrated processing such as cutting, pressing, welding, bending, burring, buffing, electrochemical polishing, and cleaning accordingly.

We not only respond to customized orders but also to mass production required orders and repeated orders with products from our group factories overseas which are stable in quality while competitive in cost.

Completed process of material selection, processing, production and installation

At Nissho Astec, we have three aspects; as a wholesaling, processing industry with diversified technologies and pipe plumbing. That is the reason why we can provide customers with the completed process from material selection, processing, production and installation. This eliminates complicated intermediate arrangements and variations in quality, which leads to drastic reduction in management load and overall cost.

List of technologies

Cutting

At Nissho Astec, we have various specialized machines as well as automatic machines such as CNC lathes, Machine Center or 3D laser machines. However, we also value the craftmanship with manual machines. This is due to our belief, which is that specialized and automated technologies are based on the fundamental technology of general machines; and that our cutting process are being operated by a combination of various kinds of specialized, automatic and general machines.

Laser cutting

We have a high-end model machine which added a positioner function to a 5-axis drive CAD-CAM laser cutting machine. This makes it possible to cut with high-difficulty laser cutting.

Pipe bending

We have installed a 3D pipe bender for piping inside the semiconductor manufacturing equipment, which makes it possible for us to replicate the complicated bending process with high precision.

Burring

By making use of the burring process, pipe assembling can be done without the use of some TEE fittings, which not only reduces leakage and strain, but also brings down the total cost of piping, and simplifies the cleaning process and installment of the whole process line. At Astec, we can deal with various sizes of caliber (up to 350A size). Furthermore, there are extremely few scratches on both the inside and outside of the final products. thanks to our continuous innovation after regular dealing with abrasive products, it is one of our unique characteristics.

Welding

「Enormous damage is caused by Defects afterwards」, this motto is constantly remembered by each and every staff member of our company, pushing them to pursuit high level of completion, according to the requirements stated in our customers’ welding instructions. We also operate welding process for other products, such as tanks or frames.

Buff polishing

We are devoted to polishing as well. For example, temperature control during titanium material polishing process, precision of the buffing process operated in our in-house factory with electrochemical polishing system: for the polishing process, we are using machines such as the automatic pipe polishing machine, the automatic fitting polishing machine and the cask specialized polishing machine, which are all made by our enthusiastic and innovative employees.

We combine those high-technology and craftmanship.

Electro Polishing

Astec has a long-established presence in the domestic market in the electrochemical polishing field. According to our customers’ orders, we provide two kinds of EP grade. For customers who order completed EP prefab piping, we will re-apply EP only to the welded part. By doing this, the pipes will be covered with a layer of chromium-rich passive film.

GOLD EP / GOLD EP WHITE

GOLD EP and GOLD EP WHITE are stainless steel surface treatment technology which is solution to the problems occurring when using Ultra Clean Technology. GOLD EP results in no elution against residual oxygen-rich alcohol / ozone water, and GOLD EP WHITE has the characteristic of not dissolving in ultra-pure water · organic amine type chemicals. Currently, only two companies in Japan are capable of operating this treatment process.

Cleaning

For the cleaning process, we are operating pickling (degreasing cleaning) · BA pipe cleaning and EP pipe cleaning. We also have a clean room (conforming to JIS B9920 Class 6 (USA Fed.Std. 209 E Class 1000)) for cleaning with ultrapure water and precision cleaning using techniques such as nitrogen blowing.

Measuring

For cutting pipe, for example, we can provide finished products with accuracy of 0.1mm even though pipe length is 4000L because of our strict and accurate dimensional control system. We can achieve a high level of accuracy not only in finished components, but also in prefabricated piping. At Astec, we can perform different kinds of measurement according to customers’ requirements, such as ultrasonic thickness measurement, oil content measurement, particle measurement, surface roughness measurement, etc.

Inspection (Inspecting)

Regarding the visual inspection for each process, we have set up a standardized accreditation system and we also provide training so that constant and precise judgment can be made. We also have a certification system for inspection using measuring equipment, and we are trying to handling the technical maintenance of our on-hand equipment.

Testing

For our testing process, we are performing pressure resistance test, Helium leak test and 121 ° C pure steam exposure test. Regarding the handling of this testing equipment, we have established an in-house accreditation system, which is an equivalent to the inspecting process, and we have a thorough system for proper examination although it is still at a self-inspection level

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