Square tube pad boxJB/T3411.56-99Standard manufacturing, materialsHT200Used for the inspection and marking of parallelism and perpendicularity of parts, as well as for the three-dimensional marking and measurement of parallelism and perpendicularity in mechanical components. Can produce various specifications of equal-height square boxes and rectangular cylinders according to customer requirements.

Square tube pad box specifications:100mm×100mm×100mm-600mm×600mm×600mm Available for customization upon request for sizes larger than the above specifications.

Production standards and requirements for square box skids: All working surfaces of the square box must be free of rust, scratches, cracks, dents, and other defects that may affect the measuring performance. Non-working surfaces should be sandblasted and painted, with corners chamfered. A label should be present on the inner wall of the square box, indicating the specifications, dimensions, grade, factory serial number, and manufacturer's name.