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云坤鋼管現貨規格表

6*1-1.5-2.5	63.5*4.5-5-6-7-8-9-10-12-15-16	245*8-10-14-17-20-22-30-40
14*1.5-2.5-3	76*4-4.5-5-6-7-8-9-10-12-15	273*7-8-10-16-18-20-25-30-45-60
16*1.5-2.5-3	78*4-4.5-5-6-7-8-9-10-12-14	299*8-12-20-35-50
18*2-3-4-5	83*4.5-6-10-12-14-16-18-20	335*8-12-14-18-22-25-45-60
20*2-2.5-3-6	89*4.5-6-10-12-14-16-18-20	355*8-10-20-25-30-40-52
24*2.5-3-4-5-6	95*4.5-8-10-12-14-16-20	377*8-12-16-20-24-28
25*2.5-3-4-5-6	102*4.5-5-7-8-10-12-14-16-18-30	402*10-15-20-25-30-35-40
28*3-3.5-4-5-6	108*4.5-5-7-8-10-12-14-18-20-22	406*10-20-25-28-35-40
32*3.5-4-5-6-8	114*4.5-5-6-7-10-12-16-18-20	426*10-12-14-16-20-25-30-35-40
34*4-5-6-8	121*4.5-5-6-7-8-10-12-14-16-18-20	480*10-12-14-16-18-20-25-30-40-50
36*3.5-5-6-8	127*4.5-5-6-7-8-10-12-14-16-18-20	508-530*10-12-14-16-18-20-30-40
38*4.5-6-7-8-10	133*4-5-6-8-12-15-18-20-25-30	560*10-14-16-20-25-30-40-50-60
39*3.5-5-6-8	140*6-8-10-12-14-16-18-20-22-25	600*10-14-16-20-25-30
42*3.5-4-5-6-7-8-9-10	148**6-8-10-12-14-16-18-20-30	610-10-11-18-20-25-30-45-66
45*3.5-4-5-6-7-8-9-10	150*6-8-10-12-14-17-20-25-30	630*10-30-40-45-55-75
48*3.5-4-5-6-7-8-9-10	153*4.5-6-8-10-12-14-20-25-30	650*15-20-30-45-55-75
51*3.5-4-5-6-7-8-9-10	168*8-10-12-14-20-25-30	710*10-20-30-45-65-75
56*3.5-4-5-6-7-8-9-10	180*8-12-16-25-30-45	720*10-20-40-55-60-75-95-100
57*3.5-4-5-6-7-8-9-10	184*6-8-12-16-20-25-30-40-48	760*20-30-40-50-60-70
60*3.5-4-5-6-7-8-9-12-14	200*6-7-10-15-20-26-30-45	850*20-25-35-45-65
63*3.5-4.5-5-6-7-8-9-12-14	219*6-8-12-16-18-20-25-30-45-50-60	960*48 1020*50-60-80
68*4-4.5-5.5-7-8-9-10-12-14-16	232*10-20-30	1020-50-60-80-100

2012年無縫鋼管標準 
Q235與Q345的區別是什么？
焊接鋼管的標準是什么？