10#,20#精密钢管
Description
pulled from site's meta description山东精密钢管厂主要经营10#精密管，外径:25-426mm壁厚:2-60mm的精密管,20#精密管,45#精密管,16Mn无缝钢管,Q345B无缝钢管,精密无缝钢管等。
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