Granite Square Block instrument with Competitive

Cast Iron Square Tube & Competitive Price Usage: It is applicable to various inspections and benchmark planes for accuracy measurement. It can be used as the measurement benchmark for machine tool inspection and to inspect the dimension accuracy or running difference with the function of performing precise lineation. It is an inevitable tool during machine manufacturing. Materials and Processing: The material of our surface plate is high strength cast iron HT200-300,working surface degree of hardness is HB170-240, undergoes two manual handlings(artificial annealing 600 degrees-700 degrees with natural aging 2-3years) to make the product stable in accuracy and good in grinding resistance. Granite surface plate has many advantages over cast iron surface plates: - Twice as hard as cast iron. - Free from wringing, so there is no interruption of work. Free from burrs or protrusions because of the fine grain structure and insignificant stickiness; this ensures high degree of flatness over a long service life and causes no damage to other parts or instruments. - Trouble-free operation for use with magnetic materials. - Long life and rust-free, resulting in low maintenance costs.Black granite material. Flatness accuracy made according to Standard DIN 875. Special sizes can be made as per your request.Specification (mm)Parallelism of Working SurfaceFlatness of Working SurfacePerpendicularity of Working SurfaceAccuracy Grade (μm)000000000100×100×1000.0010.0020.0010.0020.0010.002150×150×1500.00150.0030.0010.0020.00150.003200×200×2000.0020.0040.00150.0030.0020.004300×300×3000.0030.0060.00150.0030.0030.006400×400×4000.0040.0080.0020.0040.0040.008500×500×5000.0050.010.00250.0050.0050.01600×600×6000.0060.0120.0030.0060.0060.012800×800×8000.0080.0160.0040.0080.0080.016 Also,wecould according to the customer`s requirments and drawings to produce. Should you require any more details,please feel free to contact us.