Navistar cast iron square tube is mainly used for parts parallelism, perpendicularity test and support the workpiece when crossed, usually the same side of the cube or cuboid, can produce a variety of user requirements specifications and high-side box and the rectangular tube. Cast iron square tube: the standard by JB/T3411.56-99 manufacturing, material HT200. 
 Navistar iron side tube use: square box is mainly used for parts of parallelism, perpendicularity and other inspection and marking. 
 Square box is made of cast concrete six cube face of the cavity, one of the working surface of a V-groove. 
 Cast iron square tube test Hangxing environmental conditions: temperature, humidity. Requirements: square box of the face can not have rust, scratches, cracks, dents and other defects affecting measurement performance. Non-face should be painted sand, edge chamfering. There should be signs in the square box wall, and marked with size dimensions, level serial number, manufacturer name. 
 Cast iron square tube Hangxing accuracy: square boxes except for the scratch test developed flat-givers, but also contacts with the coloring method test spots. Side length of 25mm in any number of spots within a square: 1, 2 less than 25 points; 3 less than 20 points. Test method for testing side box side length of 300mm and below the square box, test boxes were seized when the surface of the side ends of the block placed on the amount of 1mm, the knife-edge ruler on the amount of block work surface, then its all been indecent amount of block at the test plug, equivalent block group size of just squeezed and ends when the difference between the amount of block size to be indecent on the deviation between the two ends. This test should be in square boxes face vertical, horizontal and diagonal cross-section on a few. Various locations in the measured linear error in the same direction whichever is maximum, when the error is inconsistent with the direction of whichever is the most positive difference and absolute value and the largest negative difference, the subjects surface plane flatness. 
 Navistar Metal Casting Other Recommended Products: cast iron square box, iron bending, testing platform, platform welding, grinding plate, test platform, work platform fire, dash panel, marble slab, cast-iron flat-foot, right angle foot, flat foot Mg , the machine plate, machine horn, deflection tester, V-frame, 90-degree angle gauge, sine bar, bed casting, to track, T-slot platform, the basic platform assembly, test platform, cast iron platform, cast iron plate , test platform, test plate, welding platform. For more information, please visit: http://www.bthxzw.com 
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