20#无缝钢管6*1-1.5-2.5
20#无缝钢管8*1-1.5-2.5
20#无缝钢管10*1-1.5-2.5
20#无缝钢管12*1-1.5-2.5
20#无缝钢管14*1.5-2.5-3  
20#无缝钢管16*1.5-2.5-3
20#无缝钢管18*2-3-4-5
20#无缝钢管20*2-2.5-3-6
20#无缝钢管24*2.5-3-4-5-6
20#无缝钢管25*2.5-3-4-5-6 
20#无缝钢管28*3-3.5-4-5-6
20#无缝钢管32*3.5-4-5-6-8
20#无缝钢管34*3-4-5-6-8
20#无缝钢管36*3-3.5-5-6-8
20#无缝钢管38*3.5-5-6-8-10-12  
20#无缝钢管39*3.5-5-6-8-10-12
20#无缝钢管40*3-3.5-5-6-8-10-12
20#无缝钢管42*3.5-4-5-6-7-8-9-10
20#无缝钢管45*3.5-4-5-6-7-8-9-10
20#无缝钢管48*3.5-4-5-6-7-8-9-10
20#无缝钢管51*3.5-5-6-8-10-12
20#无缝钢管54 *3.5-5-6-8-10-12
20#无缝钢管57*3.5-5-6-8-10-12 *3.5-4-5-6-7-8-9-10
20#无缝钢管60*3.5-4-5-6-7-8-9-12-14 
20#无缝钢管63*3.5-4.5-5-6-7-8-9-12-14
20#无缝钢管65*3.5-5-6-8-10-12-14-16  
20#无缝钢管68*4-4.5-5.5-7-8-9-10-12-14-16-18
703.5-5-6-8-10-12 -14-16-18-20-22
73*3.5-5-6-8-10-12 -14-16-18-20-22
76*3.5-5-6-8-10-12 -14-16-18-20-22
80 *3.5-5-6-8-10-12 -14-16-18-20-22
83*4.5-6-10-12-14-16-18-20
89*4.5-6-10-12-14-16-18-20
95*4.5-8-10-12-14-16-20
102*4.5-5-7-8-10-12-14-16-18-30
108*4.5-5-7-8-10-12-14-18-20-22 
114*4.5-5-6-7-10-12-16-18-20
121*4.5-5-6-7-8-10-12-14-16-18
127*4.5-5-6-7-8-10

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