铸铁平板类（量具）   平板（平台）Surface Plate　　 按JB/T7974-99标准制造，产品制成筋板式和箱体式，工作面有长方形，材料HT200，工作面采用刮平工艺，工作面上可加工V形、T型、U型槽和圆孔、长孔等。平板是用于工件检测或划线的平面基准器具。平板安装应调至水平、负荷均匀分布于各支点上，环境温度（20±5℃）使用时应避免振动。　　Made according to Standard JB/T7974-99,rib type or case type,rectangle/square/roundworking surface,material:HT200,Working sruface made by skiving,groove V/T/U shape and hole of long-round shape can be made at the surface of the plate.The surface plate is a plane standard equipment used for testing ana drawing of work pieces on it.The surface plate shall be adjusted to horizontal position and loaded evenly on each pivot.Environmental temperature 20±5℃,and vibration shall be avoided when using.筋式铸铁平板（JB/T7974-99）（单位：块）　　平板是检验机械零件平面度、平行度、直线度等形位公差的测量基准，也可用于精密零件的划线和测量。（分为A型和B型）　　此类结构平板是本厂多年试验改进而成，平面精度极为稳定，更适合精密零件检测。　　材质：HT200-300　　 硬度：HB170-210订货号规格（长×宽）mm精度等级板面厚度（mm）总高度（mm）铸铁净重（kg）0123平面度公差（um）HT01-001100×1004.69.018 1050 HT01-002100×2004.99.819.6 1050 HT01-003200×20051020.5 1050 HT01-004200×3005.51122 1050 HT01-005300×3005.51122 108015HT01-006300×40061224 108520HT01-007400×4006.512.525 128528HT01-008400×5006.5132666129040HT01-009500×5006.8142868149555HT01-010400×60071427.570159562HT01-011500×600714.228.5711612090HT01-012500×800815.5317816140155HT01-013600×800816328018160185HT01-014600×9008.316.5338322160200HT01-0151000×750918369024180350HT01-0161000×8009.519389324180370HT01-0171000×10001020409724180430HT01-0181000×12001020.54110325180565HT01-0191000×150011224511228220780HT01-0201000×2000 265213032240900HT01-0211500×2000 2856140352601200HT01-0222000×2000 316115335  HT01-0232000×2500 346716838  HT01-0241500×3000 357017440  HT01-0252000×3000 377418440  HT01-0262000×4000 448821945  HT01-0272500×6000 6012030045  HT01-0283000×6000 6212430845   箱型铸铁平板（JB/T7974-99）（单位：块）　　平板是检验机械零件平面度、平行度、直线度等形位公差的测量基准，也可用于精密零件的划线和测量。　　可生产4000-8000米各种平台订货号规格（长×宽）mm精度等级备 注0123平面度公差（um）HT02-029100×1004.69.118.3  HT02-030100×2004.99.819.6  HT02-031200×20051020.5  HT02-032200×3005.51122  HT02-033300×3005.51122  HT02-034300×40061224  HT02-035400×4006.512.525  HT02-036400×5006.5132666 HT02-037500×5006.8142868 HT02-038400×60071427.570 HT02-039500×600714.228.571 HT02-040500×800815.53178 HT02-041600×8008163280 HT02-042600×9008.316.53383 HT02-0431000×7509183690 HT02-0441000×8009.5193893 HT02-0451000×100010204097 HT02-0461000×12001020.541103 HT02-0471000×1500112245112 HT02-0481000×2000 2652130 HT02-0491500×2000 2856140 HT02-0502000×2000 3161153 HT02-0512000×2500 3467168 HT02-0521500×3000 3570174 HT02-0532000×3000 3774184 HT02-0542000×4000 4488219 HT02-0552500×6000 60120300 HT02-0563000×6000 62124308  铸铁研磨平板（JB/T7974-99）（单位：块）　　按JB/T7974-99标准制造，工作面用研磨工艺用于制作的研磨，量具修理，用本产品研磨后的制件表面粗糙度Ra≤0.08μm。　　Made according to Standard JB/T7974-99,working surface made by skiving,used for rubbing of workpiece and repairing of measuring tools.The surface roughness of workpiece after wubbing on this plate can reach Ra≤0.08μm.订货号规格（长×宽）mm精度等级0123平面度公差（um）HT03-057100×1004.69.118.3 HT03-058100×2004.99.819.6 HT03-059200×200510.320.5 HT03-060200×3005.510.921.8 HT03-061300×3005.511.422.8 HT03-062300×40061224 HT03-063400×4006.512.525.1 HT03-064400×5006.513.126.265.6HT03-065400×6006.813.727.368.3HT03-066500×500713.827.568.8HT03-067500×600714.228.571.2HT03-068500×800815.53178