Made in Japan

Manufacturer: Showa Seisakusho

Model: Welding Test Specimen (JIS Tensile Test Specimen No.4)

Material

Prototype manufactured from steel pipe provided by customer

Handle

Since there are protrusions all over the material, we cut the material down to the base of the material and processed it so that the material could be attached to the tester.
The solder part has a step around the welded part.
If steps are taken around the welding area, cracks may appear starting from the steps.
Therefore, to ensure smoothness, we turn the welding area and the border R (shoulder radius).
We also scrape the solder area by hand to make it smooth.