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1295 Jimbo, Yoshii-machi, Takasaki, Gunma, 370-2123 Japan
Phone: +81-27-387-3131
Fax: +81-27-387-3136

Standard tests


‚PDSpecifications and tolerances inspections for AP and BA tubes

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Specifications (steel grade, finishing, hardness) required by customers are inspected by use of X-Ray fluorescence analyzer and tensile testing instrument. Tolerances in the required specifications (length, outer diameter, wall thickness or inner diameter) are inspected by other instruments and visually.











‚QDEddy current inspection for AP and BA tubes

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All cracks on outside surfaces which are out of required specifications are detected and rejected.


‚RDMechanical inspection for AP and BA tubes

››››››››ƒCƒ[ƒW Mechanical properties such as tensile strength, proof stress and plasticity are inspected conforming to JIS standards.




‚SDOthers

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Other inspections conforming to JIS standards






Optional tests


1. Hydrostatic testing for AP and BA tubes

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Proof pressure test is provided as requested by customer.


2. Surface roughness measuring for BA tube

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Sampling inspection by use of surface roughness measuring instrument as requested by customer


3. Corrosion test for AP and BA tubes

››››››››ƒCƒ[ƒW To confirm no grain boundary corrosion cracking by use of sulfuric acid/copper sulfate@@




4. Dye penetrant test for BA tube

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Inspection of minute cracks by penetrant liquid@@@@@


5. Others

››››››››ƒCƒ[ƒW Inspections conforming to respective specifications of each countries@@@@@