我公司的所有产品全部正品出售。天津大无缝、成钢、太钢、鞍、冶、衡等钢管厂生产的钢管和不锈钢管，主要材质有：10#20#35#45#,16Mn,27SiMn,40Cr,42CrMo,40Mn2,35Mn2,Cr5Mo,12Cr1MoVG,15CrMoG
12×1                           14×1.5-2.5-3                   6×1.5-2.5-4          
18×2.3-4-5                     20×2.5-3-5                     24×2.5-3-4-5-6            
25×2.5-3-4-5-6                 28×3-3.5-4-5-6                 32×3.5-4-5-6-8            
34×4-5-6-8                     36×3.5-5-6-8                   38×4-5-6-7-8-9-10         
39×3.5-5-8-10                  42×3.5-4-5-6-7-8-9-10          45×3.5-4-5-6-7-8-9   
48×3.5-4-5-6-7-8-9-10          51×3.5-4-5-6-7-8-9-10          56×3.5-4-5-6-7-8-9-10 
57×3.5-5-6-7-8-9-10-12         60×3.5-4.5-5-6-7-8-9-12-14     63×3.5-4.5-5-6-7-8-9-10-12-14
68×4-4.5-5-6-7-8-9-10-12-14    70×4-4.5-5-6-7-8-9-10-12-15    73×4-4.5-5-6-7-8-9-10-12-15
76×4-4.5-5-6-7-8-9-10-12-14    83×4.5-5-10-12-14-16-18-20     95×4.5-6-8-10-12-14-16-20