Iron & Steel

1. Home
2. Products
3. Minerals & Metallurgy
4. Iron & Steel

Share us

BS6323-7 SAW4,SAW5 Seamless Longitudinal Submerged Arc Welded Pipes

BS6323-7

Send Inquiry

Description

Standard: BS6323-7 Seamless and Welded Steel Tubes for AutomobileMchanical and General Engineering Purposes

?


Part 7: Specific Requirements for Submerged Arc Welded Steel Tubes

?

Applications: for Auto industry / for machinery use/mechanical and general engineering purposes

Size range: O.D.: 508-2020mm???? W.T.:6.3-50mm????? L:max12000mm??????????????

?

Method of Manufacture:

The tubes are manufactured by longitudinally butt welding preformed steel plate or skelp by an automatic submerged arc welding process? ?

?

Delivery Condition:

The tubes are supplied in the condition of:

a) ?As-wedled

b) ?Hot sized

c) ?Cold sized? ? ?

?

- - - -
?????????????????????????????????????? Chemical Compositions and Mechanical properties |
Designation | ??? Chemical Compositions( ladle analysis) | ??? Mechanical properties |
??? C | Si | ? Mn | ??? P | ??? S | ???? Re | ?? Rm | ?? A |
? max. | ? max. | ? max. | ? max. | ? max. | ?? min. | ?? min. | ? min. |
? | % | % | % | % | % | N/mm2 | N/mm2 | % |
SAW 4 | 0.25 | 0.35 | 1.20 | 0.050 | 0.050 | 235 | 410 | 22 |
SAW 5a | 0.23 | 0.50 | 1.50 | 0.050 | 0.050 | 340 | 490 | 20 |
NOTE? Welding of tubes of these grades does not require special techniques but care should be taken and welding should be carried out in accordance with the guidance given in the appropriate British Standard for welding, e.g. BS 5135.a Grain refining elements may be added to this grade at the option of the manufacturer.? |
- - - -

?

?

- - - -
????????????????????????????????? Dimensions of submerged arc welded steel tubes |
Outside diameter | Thicknesses |
Minimum thickness | Thicknesses in common usage | Maximum thickness |
mm | mm | mm | mm | mm | mm | mm |
508 | 6.3 | 8.0 | 10 | 12.5 | ? | 20 |
559 | 6.3 | 8.0 | 10 | 12.5 | ? | 20 |
610 | 6.3 | 8.0 | 10 | 12.5 | 16 | 32 |
660 | 6.3 | 8.0 | 10 | 12.5 | 16 | 32 |
711 | 7.1 | 8.0 | 10 | 12.5 | 16 | 32 |
762 | 7.1 | 10 | 12.5 | 16 | ? | 32 |
813 | 7.1 | 10 | 12.5 | 16 | 20 | 32 |
864 | 7.1 | 10 | 12.5 | 16 | 20 | 32 |
914 | 8.0 | 10 | 12.5 | 16 | 20 | 45 |
1016 | 8.0 | 12.5 | 16 | 20 | 25 | 50 |
1220 | 10 | 12.5 | 16 | 20 | 25 | 50 |
1420 | 12.5 | 12.5 | 16 | 20 | 25 | 50 |
1620 | 12.5 | 16 | 20 | 25 | ? | 50 |
1820 | 12.5 | 16 | 20 | 25 | ? | 50 |
2020 | 12.5 | 16 | 20 | 25 | ? | 50 |
NOTE? Other outside diameters and thicknesses are available by agreement between purchaser and manufacturer.For sectional properties including mass per unit length,see appendix B of BS 6323-1:1982 |
- - - -

Note:?Special?steel?grade?is?also?available,?according?to?customer?request.

?

Tests:

Bend tests (strips)

The diameter of the bar shall be size times the thickness of the test pieces.

The test piece shall be show no significan crack or flaw. The opening out of a slight defect due to ?incomplete root penetration or lack of root fusion need not be considered a cause for rejection provided the defect has sound metal at the back and on each side of it.

In borderline cases further tests shall be made on test pieces from the same weld adjacent to the original test piece.

?



?

Publications referred to:

?

BS3601, ?Steel pipes and tubes for pressure purposes: carbon steel with specifed room temperature properties

?

BS 3602, ???Specifications for steel pipes and tubes for pressure purposes: carbon and carbon manganese steel with specified elevated temperature properties.

?

BS 3603, ? ?Specification for steel pipes and tubes for pressure purposes: carbon and alloy steel with specified low temperature properties

?

BS3604, ? ? ?Specification for steel pipes and tubes for pressure purposes: ferritic alloy steel with specified elevated temperature properties.

?

BS3605, ? ? ? Seamless and welded austenitic stainless steel pipes and steel tubes for pressure purposes

?

BS4360, ? ? ? Specification for weldable structural steels

?

BS4848, ? ? ? Hot-rolled structrual steel sections

?

BS4848-2,? ? Hollow sections

?

BS5135, ? ? ? Metal-arc welding of carbon and carbon manganese steels

?

BS6323, ? ? ? Specification for seamless and welded steel tubes for automobile, mechanical and general engineering purposes

?

BS6323-1, ??General requirements

Read More