321（0Cr18Ni10Ti）不銹鋼棒
熱軋棒規格型號參照表 models and specifications table of hot-rolled bar
W=0.00793×b×d
單位重量：kg/m 定尺長度：2-6m 熱軋、鍛造
unit weight:kg/m rated length:2-6m hot rolled,forging
| 直徑mm
diameter | 重量kg/m
weight | 直徑mm
diameter | 重量kg/m
weight | 直徑mm
diameter | 重量kg/m
weight | 直徑mm
diameter | 重量kg/m
weight | 直徑mm
diameter | 重量kg/m
weight |
| ∮8 | 0.399 | ∮32 | 6.380 | ∮80 | 38.872 | ∮145 | 130.986 | ∮230 | 329.567 |
| ∮10 | 0.623 | ∮35 | 7.632 | ∮85 | 45.012 | ∮150 | 140.175 | ∮240 | 358.848 |
| ∮12 | 0.897 | ∮38 | 8.996 | ∮90 | 50.463 | ∮155 | 149.676 | ∮250 | 389.375 |
| ∮14 | 1.221 | ∮40 | 9.968 | ∮95 | 56.226 | ∮160 | 159.488 | ∮260 | 421.148 |
| ∮15 | 1.402 | ∮42 | 10.99 | ∮100 | 62.3 | ∮165 | 169.612 | ∮270 | 454.167 |
| ∮16 | 1.595 | ∮45 | 12.616 | ∮105 | 68.686 | ∮170 | 180.047 | ∮280 | 488.432 |
| ∮18 | 2.019 | ∮48 | 14.354 | ∮110 | 75.383 | ∮180 | 201.852 | ∮300 | ／ |
| ∮20 | 2.492 | ∮50 | 15.575 | ∮115 | 82.392 | ∮185 | 215.626 | ∮350 | ／ |
| ∮22 | 3.015 | ∮55 | 18.846 | ∮120 | 89.712 | ∮190 | 224.903 | ∮400 | ／ |
| ∮24 | 3.588 | ∮60 | 22.428 | ∮125 | 97.344 | ∮195 | 236.896 | ／ | ／ |
| ∮25 | 3.894 | ∮65 | 26.322 | ∮130 | 105.287 | ∮200 | 249.2 | ／ | ／ |
| ∮28 | 4.884 | ∮70 | 30.527 | ∮135 | 113.542 | ∮210 | 274.743 | ／ | ／ |
| ∮30 | 5.607 | ∮75 | 35.044 | ∮140 | 122.108 | ∮220 | 301.532 | ／ | ／ |
熱軋圓棒尺寸、外形允許偏差（GB/T702-1986）Allowable tolerance of dimension and shape of hot rolled round stick
| 圓鋼 | 允許偏差 |
| 精度組別 |
| 1組 | 2組 | 3組 |
| 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 |
鍛制圓棒和方鋼尺寸、外形允許偏差（GB/T908-1987）Allowable tolerance of dimension and shape of forging round stick and rectangle steel
單位：mm
| 圓鋼直徑、方鋼邊長 | 允許偏差 |
| 精度組別 |
| 1組 | 2組 |
| ＞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 |
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