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Outer diameter 12-609.6mm 10*10-600*600mm 10*20-600*800mm Wall thickness 0.6-16mm 0.6-20mm 0.6-20mm Length 2m--5.8m/6m/12m and RANDOM LENGTH Standard ASTM A53,BS1387-85,GB/T3091-08,DIN2440,JIS-G3444...