20r合金钢管20Cr合金无缝钢管20Cr钢管厂20Cr钢管现货本公司主营20r合金钢管20Cr合金无缝钢管详见www.lctsgg.com 聊城市瑞特无缝管有限公司生产经销钢管|无缝钢管|合金钢管|不锈钢管|距形钢管|20#...12×2 18 73×4-4.5-5-6-7-8-9-10-12-15 50 219×30-40-45-50-55 65 14×2-2.5-3 20 76×4-4.5-5-6-7-8-9-10-12-14 60 219×55-58-60-65-70 80 16×2-2.5-4 30 83×4.5-5-10-12-14-16-18-20 30 245×8-10-14-17-20-22 105 18×2.3-4-5 20 89×4.5-8-10-12-14-16-18-20 40 245×25-28-30-34-40 84 20×2.5-3-5 17 95×4.5-6-8-10-12-14-16-20 50 273×7-9-12-15-18-20-25 100 24×2.5-3-4-5-6 25 102×4.5-5-6-7-8-10-12-14-16-20 80 273×30-35-38-40-45-50 50 25×2.5-3-4-5-6 28 108×4.5-5-6-7-8-10-12-14-18-20-22 75 299×8-12-16-20-24-28 60 28×3-3.5-4-5-6 30 114×4.5-5-6-7-8-10-12-14-18-20 100 299×30-32-36-38-40-45 70 32×3.5-4-5-6-8 40 121×4.5-5-6-7-8-10-12-14-16-20 102 325×8-12-14-18-38-42 120 34×4-5-6-8 35 等等。。
