Q345B无缝钢管232*45哪里有？无锡豪鑫天大量货源直销
Q345B无缝钢管重量公式：[(外径-壁厚)*壁厚]*0.02466=kg/米（每米的重量）
Q345B无缝钢管化学成分：
C:0.12-0.20 Si:0.20-0.60 Mn:1.00-1.60 P:≤0.040 S:≤0.040 Ni:≤0.30 Cr:≤0.30 Cu:≤0.20 V:0.02-0.15 Nb:0.015-0.06
70*4.5-5-6-7-8-9-10-12-15-16 245*8-10-14-17-20-22-30-40-45-50
73*4-4.5-5-6-7-8-9-10-12-15 273*7-8-10-16-18-20-25-30-45-60
78*4-4.5-5-6-7-8-9-10-12-14 299*8-12-20-35-50
83*4.5-6-10-12-14-16-18-20 335*8-12-14-18-22-25-45-60
89*4.5-6-10-12-14-16-18-20 355*8-10-20-25-30-40-52
95*4.5-8-10-12-14-16-20 377*8-12-16-20-24-28
102*4.5-5-7-8-10-12-14-16-18-30 402*10-15-20-25-30-35-40
108*4.5-5-7-8-10-12-14-18-20-22 406*10-20-25-28-35-40
114*4.5-5-6-7-10-12-16-18-20 428*10-12-14-16-20-25-30-35-40
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