美标不锈钢管允许外径和壁厚的公差范围 尺寸 标准 外径（mm） 壁厚（%） 切割长度（mm） 尺寸 公差 尺寸(mm) 公差 尺寸 公差 GB/T14975-02 10~30 +0.30/-0.30 S≤3 +14/-14 1.0~3.0 +15/0 30~50 +0.40/-0.40 S＞3 +12/-10 D＞50 +0.9%/-0.9% GB/T14976-02 6~10 +0.20/-0.20 0.5~1.0 +0.15/-0.15mm +15/0 10~30 +0.30/-0.30 1.0~3.0 +14/-14 30~50 +0.40/-0.40 ＞3 +12/-10 D＞50 +0.9%/-0.9% +12.5/-12.5 GB13296-91 ≤140 +1.25%/-1.25% ≤10 +15/-15 ＞140 +1%/-1% ＞10 ASTM213 D＜25.4 +0.10/-0.10 D＜38.1 +20/0 D＜50.8 +3.0/0 25.4~38.1 +0.15/-0.15 38.1~50.8 +0.20/-0.20 50.8~63.5 +0.25/-0.25 D≥38.1 +22/0 D≥50.8 +5.0/0 63.5~76.2 +0.30/-0.30 76.2~101.6 +0.38/-0.38 101.6~190.5 +0.38/-0.64 190.5~228.6 +0.38/-1.14 ASTM A269 D＜12.7 +0.13/-0.13 +15/-15 +3.2/0 12.7~38.1 +10/-10 38.1~88.9 +0.25/-0.25 +4.8/0 88.9~139.7 +0.38/-0.38 139.7~203.2 +0.76/-0.76 ASTM A312 10.29~48.26 +0.40/-0.80 +12.5/-12.5 +6.0/0 48.26~114.30 +0.80/-0.80 114.30~219.08 +1.60 /-0.80 219.08~457.20 +2.40/-0.80 ASTM A789 D≤12.7 +0.13/-0.13 +15/-15 +3.0/0 12.7~38.1 +10/-10 38.1~88.9 +0.25/-0.25 +5.0/0 88.9~139.7 +0.38/-0.38 139.7~203.2 +0.76/-0.76 ASTM A790 10.29~48.26 +0.40/-0.80 48.26~114.3 +0.80/-0.80 114.3~219.08 +1.60/-0.80 219.08~457.20 +2.40/-0.80 30~50 +4.00/-4.00 S＞3 +12/-10
美标不锈钢管允许外径和壁厚的公差范围
尺寸
标准
外径（mm）
壁厚（%）
切割长度（mm）
公差
尺寸(mm)
GB/T14975-02
10~30
+0.30/-0.30
S≤3
+14/-14
1.0~3.0
+15/0
30~50
+0.40/-0.40
S＞3
+12/-10
D＞50
+0.9%/-0.9%
GB/T14976-02
6~10
+0.20/-0.20
0.5~1.0
+0.15/-0.15mm
＞3
+12.5/-12.5
GB13296-91
≤140
+1.25%/-1.25%
≤10
+15/-15
＞140
+1%/-1%
＞10
ASTM213
D＜25.4
+0.10/-0.10
D＜38.1
+20/0
D＜50.8
+3.0/0
25.4~38.1
+0.15/-0.15
38.1~50.8
50.8~63.5
+0.25/-0.25
D≥38.1
+22/0
D≥50.8
+5.0/0
63.5~76.2
76.2~101.6
+0.38/-0.38
101.6~190.5
+0.38/-0.64
190.5~228.6
+0.38/-1.14
ASTM A269
D＜12.7
+0.13/-0.13
+3.2/0
12.7~38.1
+10/-10
38.1~88.9
+4.8/0
88.9~139.7
139.7~203.2
+0.76/-0.76
ASTM A312
10.29~48.26
+0.40/-0.80
+6.0/0
48.26~114.30
+0.80/-0.80
114.30~219.08
+1.60 /-0.80
219.08~457.20
+2.40/-0.80
ASTM A789
D≤12.7
ASTM A790
48.26~114.3
114.3~219.08
+1.60/-0.80
+4.00/-4.00
永上不锈钢管，美标不锈钢管，卫生级不锈钢管
