rectangular steel tubing for Hot Rolled Carbon Steel Hollow
Hot Roll Steel Rectangular Tube
rectangular steel tubing welded structural grade tubing that is available in either type ASTM A500 or A513 Grade B is cold formed,
electric-resistance welded tubing. It has a high strength-to-weight ratio, is relatively low in cost and is easily welded.Rectangular
Tube The hollow shape offers good appearance and ease of maintenance.
rectangular steel tubing Applications
Structural Steel tube (tubing) can be used for a wide variety of mechanical applications. I’s close tolerances, good finish,
and dense structure make it ideal for parts such as structural support and parts, frames, racks, trailer beds and trailer components,
structural components and supports for buildings, bridges, and highways, conveyors, machine parts, guides, and supports,
safety and deck rails, sign posts, athletic equipment, ornamental usages and a wide range of applications in industrial, construction,
automotive, appliance, furniture and agricultural industries.
RECTANGULAR TUBE TOLERANCES
OUTSIDE DIMENSIONS TOLERANCE
|Largest Outside Dimension Across Flats||Tolerance (+/-) inches*|
|2-1/2 and under||0.020|
|Over 2-1/2 to 3-1/2 incl||0.025|
|Over 3-1/2 to 5-1/2 incl||0.030|
* Tolerances include allowance for convexity or concavity. Tolerance may be increased 50% when applied
to the smaller dimension of rectangular sections whose ratio if the cross-sectional dimensions is between 1.5 and 3,
and 100 percent when the ratio exceeds 3.
WALL THICKNESS TOLERANCE
The tolerance for wall thickness exclusive of weld area shall be plus or minus 10% of the nominal wall thickness specified.
The wall thickness is to be measured at the center of the flat.
The permissible variation for straightness shall be 1/8" times the number of feet of the total length divided by 5.
SQUARENESS OF SIDES
Adjacent sides may deviate from 90° by a tolerance of plus or minus 2° maximum.
RADIUS OF CORNERS
The radius of the outside corner of the section shall not exceed three times the specified wall athickness.
Twist is measured by holding down one end of square or rectangular tube on a flat surface plate with the bottom side of
the tube parallel to the surface plate and noting the height that either corner, at the opposite end of the bottom side of the tube,
extends above the surface plate.
|Specified Dimension of Longest Side||Maximum Twist (inches) in 3 feet|
|1-1/2 and Under||0.050"|
|Over 1-1/2 to 2-1/2 incl||0.062"|
|Over 2-1/2 to 4 incl||0.075"|
|Over 4 to 6 incl||0.087"|
|Over 6 to 8 incl||0.100"|
1. More than 10 years of sales experience
2. Product exported more than 150 countries
3. Arrange to produce according yo customer's request
1. AA level customs broker,Faster through
2. 20 years of experience in the freight forwarding company
3. Delivery Detail: 10-20 days
1. Certificate: API, CE, ISO9001.2000.MTC etc
2. Inspection: BV,SGS,others is avaliable.
3. A complete testing system and testing equipments
1. Free sample can be provided
2. Small order is acceptable
3. OEM is acceptable
4. Any third party testing is acceptable