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تلرانس وزن بر حسب استاندارد ملي ايران و ديگر استانداردها |
|
STD |
Grade |
|
Weight Tolerance (Kg/m)Tolerance(%) |
|
|
Size |
Cut length |
Bundle |
|
ISIRI(Iran) |
PB |
240 |
|
8 |
± 8
|
± 7
|
|
RB |
340 |
|
10-16 |
± 5.5 |
± 5 |
|
400 |
|
18-40 |
± 4.5
|
± 4 |
|
500 |
|
|
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BS4449(England) |
PB |
250 |
|
6 |
± 9
|
|
|
RB |
460A |
|
8-10 |
± 6.5
|
|
|
460B |
|
12-40 |
± 4.5
|
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ASTM A615(USA) |
RB&PB |
40(300) |
|
All sizes |
Shall not exceed 6% |
|
60(420) |
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