GBT结构用不锈钢无缝钢管参数

来源：爱go旅游网

GBT结构用不锈钢无缝

钢管参数

集团标准化小组：[VVOPPT-JOPP28-JPPTL98-LOPPNN]

3.结构用不锈钢无缝钢管(GB/T14975-1994)(1)尺寸规格6-17,6-18(2)允许偏差6-20(3)牌号和化学成分6-19 (4)力学性能6-21(5)用途适于一般结构及机械结构用表6-17结构用不锈钢热压（挤，扩）无缝钢管的尺寸规格

外径壁厚 68 70 73 76 80 83 89 95 102 108 114 121 127 133 140 146 152 159 168 180 194 219 245 237 325 351 377 426 4.5 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 5 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 6 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 7 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 8 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 9 10 11 12 13 14 15 16 17 18 19 20 22 24 25 26 28 ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ ◎ 注：◎表示热轧钢管规格。

表6-18结构用不锈钢冷拔（轧）无缝钢管的尺寸规格

1.0 1.2 1.4 1.5 1.6 2.0 2.2 2.5 2.8 3.0 3.2 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 9.0 9.5 10 11 12 13● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●

● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 注：1.●表示冷拔（轧）钢管规格。 2．钢管的通常长度规定如下：

热轧（挤，扩）钢

管……………………………………………………………………………………………2~12 冷拔（轧）钢

管…………………………………………………………………………………………………..1~8m

3．钢管的弯曲度不得大于如下规定：

壁厚

<15mm…………………………………………………………………………………………………..1.5m

m/m 壁厚

≥15mm…………………………………………………………………………………………………..2.0

mm/m 热扩

管………………………………………………………………………………………………………..3.0

mm/m

表6-19结构用不锈钢无缝钢管的牌号和化学成分

牌号 C Si Mn P 化学成分（质量分数）(%) S Ni Cr Mo 0Cr18Ni9 1Cr18Ni9 00Cr19Ni10 0Cr18Ni10Ti ≤0.07 ≤0.15 ≤0.030 ≤0.08 ≤1.00 ≤1.00 ≤1.00 ≤1.00 ≤2.00 ≤2.00 ≤2.00 ≤2.00 ≤0.035 ≤0.035 ≤0.035 ≤0.035 ≤0.030 ≤0.030 ≤0.030 ≤0.030 8.00~11.00 8.00~10.00 8.00~12.00 9.00~12.00 17.00~19.00 17.00~19.00 18.00~20.00 17.00~19.00 - - - - Ti0Cr18Ni11Nb 0Cr17Ni12Mo2 00Cr17Ni14Mo2 0Cr18Ni12Mo2Ti 1Cr18Ni12Mo2Ti 0Cr18Ni12Mo3Ti 1Cr18Ni12Mo3Ti 1Cr18Ni9Ti 0Cr19Ni13Mo3 00Cr19Ni13Mo3 0Cr13 1Cr17 ≤0.08 ≤0.08 ≤0.030 ≤0.08 ≤0.12 ≤0.08 ≤0.12 ≤0.08 ≤0.08 ≤0.030 ≤0.08 ≤0.12 ≤1.00 ≤1.00 ≤1.00 ≤1.00 ≤1.00 ≤2.00 ≤2.00 ≤2.00 ≤2.00 ≤2.00 ≤0.035 ≤0.035 ≤0.035 ≤0.035 ≤0.035 ≤0.030 ≤0.030 ≤0.030 ≤0.030 ≤0.030 9.00~13.00 10.00~14.00 12.00~15.00 11.00~14.00 11.00~14.00 17.00~19.00 16.00~18.50 16.00~18.00 16.00~19.00 16.00~19.00 ≤1.00 ≤2.00 ≤0.035 ≤0.030 11.00~14.00 16.00~19.00 ≤1.00 ≤2.00 ≤0.035 ≤0.030 11.00~14.00 16.00~19.00 ≤1.00 ≤2.00 ≤0.035 ≤0.030 8.00~11.00 17.00~19.00 ≤1.00 ≤1.00 ≤0.60 ≤0.75 ≤2.00 ≤2.00 ≤0.80 ≤1.00 ≤0.035 ≤0.035 ≤0.035 ≤0.035 ≤0.030 11.00~15.00 18.00~20.00 ≤0.030 11.00~15.00 18.00~20.00 ≤0.030 * 12.00~14.00 ≤0.030 * 16.00~18.00 - Nb2.00~3.00 2.00~3.00 1.80~2.50 Ti51.80~2.50 Ti0.02.50~3.50 Ti52.50~3.50 Ti0.0- Ti0.03.00~4.00 3.00~4.00 - - 1Cr13 2Cr13 ≤0.15 ≤1.00 ≤1.00 ≤0.035 ≤0.030 0.16~0.25 ≤1.00 ≤1.00 ≤0.035 ≤0.030 * * 11.50~13.50 12.00~14.00 - -

注：*残余元素Ni≤0.60。

表6-20结构用不锈钢无缝钢管的尺寸允许偏差

热压（挤，扩）钢管尺寸/mm 允许偏差/mm 冷拔（轧）钢管尺寸/mm 允许偏差/mm 普通级外径D 68≤D≤159 1595 ≤3 普通级 ±0.30 ±0.40 ±0.9% ±14% 较高级 ±0.20 ±0.30 0.8% +12% -10% ± 壁厚 ±12.5 ≤3 ≥15 S 壁厚 S >3 +12% ±10% -10% 注：供机械加工用钢管应在合同中注明，根据需方要求，经供需双方协议，可规定机械加工余

量。

表6-19结构用不锈钢无缝钢管的牌号和化学成分

牌号 C ≤0.07 ≤0.15 ≤0.030 ≤0.08 ≤0.08 ≤0.08 ≤0.030 ≤0.08 Si Mn P 化学成分（质量分数）(%) S Ni Cr 17.00~19.00 17.00~19.00 18.00~20.00 17.00~19.00 17.00~19.00 Mo - - - - - 其r18Ni9 ≤1.00 ≤2.00 ≤0.035 ≤0.030 8.00~11.00 ≤1.00 ≤2.00 ≤0.035 ≤0.030 8.00~10.00 ≤1.00 ≤2.00 ≤0.035 ≤0.030 8.00~12.00 ≤1.00 ≤2.00 ≤0.035 ≤0.030 9.00~12.00 ≤1.00 ≤2.00 ≤0.035 ≤0.030 9.00~13.00 -r18Ni9 -Cr19Ni10 -r18Ni10Ti Ti≥r18Ni11Nb Nb≥r17Ni12Mo2 ≤1.00 ≤2.00 ≤0.035 ≤0.030 10.00~14.00 16.00~18.50 2.00~3.00 ≤1.00 ≤2.00 ≤0.035 ≤0.030 12.00~15.00 16.00~18.00 2.00~3.00 ≤1.00 ≤2.00 ≤0.035 ≤0.030 11.00~14.00 16.00~19.00 1.80~2.50 -Cr17Ni14Mo2 -r18Ni12Mo2Ti Ti5C%

r18Ni12Mo2Ti ≤0.12 ≤0.08 ≤0.12 ≤0.08 ≤0.08 ≤0.030 ≤0.08 ≤0.12 ≤0.15 ≤1.00 ≤2.00 ≤0.035 ≤0.030 11.00~14.00 16.00~19.00 1.80~2.50 ≤1.00 ≤2.00 ≤0.035 ≤0.030 11.00~14.00 16.00~19.00 2.50~3.50 ≤1.00 ≤2.00 ≤0.035 ≤0.030 11.00~14.00 16.00~19.00 2.50~3.50 ≤1.00 ≤2.00 ≤0.035 ≤0.030 8.00~11.00 17.00~19.00 - r18Ni12Mo3Ti Ti5(0.02)Ti5C%r18Ni12Mo3Ti r18Ni9Ti r19Ni13Mo3 ≤1.00 ≤2.00 ≤0.035 ≤0.030 11.00~15.00 18.00~20.00 3.00~4.00 ≤1.00 ≤2.00 ≤0.035 ≤0.030 11.00~15.00 18.00~20.00 3.00~4.00 ≤0.60 ≤0.80 ≤0.035 ≤0.030 ≤0.75 ≤1.00 ≤0.035 ≤0.030 ≤1.00 ≤1.00 ≤0.035 ≤0.030 * * * * 12.00~14.00 16.00~18.00 11.50~13.50 12.00~14.00 - - - - Ti5(0.02)Ti5(0.02)-Cr19Ni13Mo3 -r13 -r17 -r13 -r13 0.16~0.25 ≤1.00 ≤1.00 ≤0.035 ≤0.030 -注：*残余元素Ni≤0.60。表6-21结构用不锈钢无缝钢的力学性能

力学性能牌号推荐热处理制度 1010~1150 ℃, 1010~1150 ℃, 1010~1150 ℃, 920~1150 ℃, 980~1150 ℃, 1010~1150 ℃, 1010~1150 ℃, 1000~1100 ℃, 1000~1100 ℃, 1000~1100 ℃, 1000~1100 ℃, 1000~1100 ℃, Σb/MPa σ0.2/MPa δ5(%) ≥ 奥氏体形 1 0Cr18Ni9 2 1Cr18Ni9 3 00Cr19Ni10 4 0Cr18Ni10Ti 5 0Cr18Ni11Nb 6 0Cr17Ni14Mo2 7 00Cr17Ni14Mo2 8 0Cr18Ni12Mo2Ti 9 1Cr18Ni12Mo2Ti 10 0Cr18Ni12Mo3Ti 11 1Cr18Ni12Mo3Ti 12 1Cr18Ni9Ti

组织类序号型密度(g/cm(3)) 520 520 480 520 520 520 480 530 530 530 530 520 205 205 175 205 205 205 175 205 205 205 205 205 35 35 35 35 35 35 35 35 35 35 35 35 7.93 7.90 7.93 7.95 7.98 7.98 7.98 8.00 8.00 8.10 8.10 7.90 13 0Cr19Ni13Mo3 14 00Cr19Ni13Mo3 15 0Cr13 16 1Cr17 17 1Cr13 18 2Cr13 1010~1150 ℃, 1010~1150 ℃, 780~830 ℃, 780~850 ℃, 800~900 ℃, 800~900 ℃, 520 480 370 410 410 470 205 175 180 245 205 215 35 35 22 20 20 19 7.98 7.98 7.70 7.70 7.70 7.70 注：1.热积压管的抗拉强度允许降低20MPa

2．钢管经热处理并酸洗交货。凡经整体磨，镗火警保护气氛热处理的钢管，可不经酸洗交货。

3．供机械加工用钢管可不经酸洗交货。

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