we have obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc.
BS1139 Standard Specification for Metal scaffolding
Part 1:Tubes
Section 1.1 Specification for steel tube
Part 2:Couplers
Section 2.1 Specification for steel couplers,loose spigots and base-plates for use in working scaffolds and falsework made of steel tubes
Chemical Compositon
|
C |
Si |
P |
S |
N |
|
0.15 |
0.30 |
0.050 |
0.050 |
0.009 |
Mechanical Properties
|
Tensile strength |
Rm |
340-480 |
|
Yield stress |
ReH |
235 |
|
Elongation |
A |
24% |
