seamless steel tubes for structural purposes

Specifications

1.Dimensions and Tolerances
The dimensions and tolerances comply with
BS1387-1985 or GB/T3091-2001 andare shown
in the table on p. 3.
2. Length
The standard lengths supplied are from 5 to 12 m
inclusive.
The lengths supplied vary with the dimension; for
each dimension
the range is 2m.
Service Center
The Service Center can supply tubes cut in fixed
lengths with
tolerances of -0 + 5 mm.
3. Checks and tests
The product is subjected to the following checks:
- Cast analysis
- Tensile test
- Impact strength test
- Electromagnetic test (not required by
BS1387-1985)
- Visual and dimensional check
Options
Fixed or multiple lengths can be agreed upon at
time of ordering
4. Surfaces
The product is supplied in hot rolled condition.
5. Certification
The product comes with a 3.1.B inspection
certificate, in
conformity with BS1387-1985/ GB/T3091-2001.
TYSTEEL employs complete product traceability,
with the cast number indicated on each tube.
Options
of ordering.
6. Identification and marking
The structural tubes are identified as follows:
Dye stamping
- Manufacturer’s trademark
- Steel grade
- S (production process)
- Plant inspector
Painted (in continuous)
- Manufacture’s trade mark
- Dimensions (OD x WT)
- Steel grade
- Production standards
- Cast no.
7. Minimum order
The minimum quantity supplied varies based upon
the dimensions and additional requirement(option)
and have to be agreed upon when ordering.
The tolerance on quantity is ± 10% for each lot
8. Packaging
Diameters greater than 200 mm: loose.
Diameters less than or equal to 200 mm: in
bundles.
9. Technical assistance
TYSTEEL offers technical advice for the use of
its products,
including grades superior to those considered in
this catalogue.