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Black Pipes - Structural
JIS G3444
DIN 2439
BS 4360/BS 7613
ASTM A500 GR A
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JIS G3445
DIN 2393
BS 1775/BS 6323
ASTM A500 GR A
Hollow Section Tubes
JIS G3466
BS 6363
ASTM A500 GR A

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