|
Tolerance Of Size And Angle Tolerance Of Size And Angle |
|
QBTTS01 Usually(special) |
JISG3466( Japan ) |
GB6728-2002( China ) |
GB3094-2000( China ) |
A,Bmm |
|
|
Under50 |
¡À0.5 |
250 |
¡À2.0 |
Under30 |
¡À0.3(ordinary) |
¡À0.2(advanced) |
Under100 |
¡À0.5£¨¡À0.25£© |
Under100 |
¡À1.5 |
100 |
¡À0.8 |
300 |
¡À2.4 |
30£50 |
¡À0.4(ordinary) |
¡À0.3(advanced) |
Above100 |
¡À0.8%(¡À0.5%) |
Above100 |
¡À1.5% |
150 |
¡À1.2 |
350 |
¡À2.8 |
50£75 |
¡À0.8%(ordinary) |
¡À0.7%(advanced) |
200 |
¡À1.6 |
400 |
¡À3.2 |
Above75 |
¡À1%(ordinary) |
¡À0.8%(advanced) |
Level degree mm |
Under100 |
Under¡À0.5£¨¡À0.3£© |
Under100 |
Under¡À0.5 |
Under60 |
¡À0.4 |
|
|
50-75 |
¡À0.8%(ordinary) |
¡À0.5%(advanced) |
Above100 |
Above0.5%£¨0.4%£© |
Above100 |
A,B¡À0.5% |
Above60 |
0.6% |
|
|
Above75 |
¡À0.9%(ordinary) |
¡À0.6%(advanced) |
Contained angle of adjoint level |
¡À1.0¡ã(¡À0.5¡ã) |
¡À1.5¡ã |
|
|
Bending degree |
1.5mm in total length 1mm in 1 meter is allowed |
Total length is Under 0.3% |
Each meter is not greater than 2,the total length is not greater than 0.2% |
Per meter<=4.0mm ,total length<=0.4% |
Angle department |
Rs<=2¡«3t |
Rs under 3t |
carbon streel Rs under 3.5t |
t<6 |
Rs=2t |
Low-alloy Rs under 4t |
6<=t<=10 |
Rs<=2.5t |
t>10 |
Rs<=3t |
Distortion |
1.5%mm in total length 1mm in 1 meter is allowed |
no obvious distortion |
Under75 |
<=2.5mm/m |
Above75 |
<=3.0mm/m |
wall thickness |
in the range of corresponding tolerance standards of the material |
Note:(1)QBTTS01 -- TTS enterprise internal standard,cold formed steel hollow sections for general structure |
(2)JISG3466 -- the standard of rectangle type steel tubes that generally constructed and used in Japan |
(3)GB/T6728-2002 -- cold drawn shaped steel tubes |
(4)Other special precision is according to the agreement signed by both sides of supply and demand |
(5)The welded joint usually in the middle of the heterogeneous type tube broadside,please propose in addition
for special demand |
(6)carbon steel type:Q195¡«Q345,10#¡«45#,and so on; Stainless steel type:SUS304,316,321,titanium alloy,pure
titanium and so on |
