热轧棒规格型号参照表 models and specifications table of hot-rolled barW=0.00793×b×d单位重量：kg/m 定尺长度：2-6m 热轧、锻造unit weight:kg/m rated length:2-6m hot rolled,forging 直径mmdiameter重量kg/mweight直径mmdiameter重量kg/mweight直径mmdiameter重量kg/mweight直径mmdiameter重量kg/mweight直径mmdiameter重量kg/mweight∮80.399∮326.380∮8038.872∮145130.986∮230329.567∮100.623∮357.632∮8545.012∮150140.175∮240358.848∮120.897∮388.996∮9050.463∮155149.676∮250389.375∮141.221∮409.968∮9556.226∮160159.488∮260421.148∮151.402∮4210.99∮10062.3∮165169.612∮270454.167∮161.595∮4512.616∮10568.686∮170180.047∮280488.432∮182.019∮4814.354∮11075.383∮180201.852∮300／∮202.492∮5015.575∮11582.392∮185215.626∮350／∮223.015∮5518.846∮12089.712∮190224.903∮400／∮243.588∮6022.428∮12597.344∮195236.896／／∮253.894∮6526.322∮130105.287∮200249.2／／∮284.884∮7030.527∮135113.542∮210274.743／／∮305.607∮7535.044∮140122.108∮220301.532／／热轧圆棒尺寸、外形允许偏差（GB/T702-1986）Allowable tolerance of dimension and shape of hot rolled round stick圆钢允许偏差精度组别1组2组3组5.5-7±0.20±0.30±0.40＞7-20±0.25±0.35±0.40＞20-30±0.30±0.40±0.50＞30-50±0.40±0.50±0.60＞50-80±0.60±0.70±0.80＞80-110±0.90±1.0±1.1＞110-150±1.2±1.3±1.1锻制圆棒和方钢尺寸、外形允许偏差（GB/T908-1987）Allowable tolerance of dimension and shape of forging round stick and rectangle steel单位：mm圆钢直径、方钢边长允许偏差精度组别1组2组＞50-60＋1.5 －1.0＋2.0 －1.0＞60-80＋2.0 －1.0＋2.5 －1.0＞80-100＋2.5 －1.0＋3.0 －1.0＞100-120＋2.5 －1.5＋3.0 －1.5＞120-140＋3.0 －1.5＋3.5 －1.5＞140-160＋3.0 －2.0＋4.0 －2.0＞160-180＋4.0 －2.0＋5.0 －2.0＞180-200＋5.0 －2.0＋6.0 －2.0＞200-220＋5.0 －3.0＋6.0 －3.0＞220-240＋6.0 －3.0＋7.0 －3.0＞240-250＋7.0 －3.0＋8.0 －3.0