SQUARE TUBE & GALVANIZED SQUARE TUBE

SPEC:
GB STANDARD: Q235 / Q355
JIS STANDARD: SS400 / SM490
ASTM STANDARD: ASTM A500 GR.A/B/C

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SPEC:
GB STANDARD: Q235 / Q355
JIS STANDARD: SS400 / SM490
ASTM STANDARD: ASTM A500 GR.A/B/C