选购精密管认准大鼎金属材料有限公司

四川资阳大鼎金属材料有限公司是一家专业从事 无缝钢管研发、生产及销售的企业，公司在业内有着一支从事 无缝钢管行业近10年的生产及销售团队，公司位于高新区新东环路路西钢材市场58号，这里交通便利，物流发达 。 公司本着质量立企、合作共赢的方针，欢迎业界各位新老客户莅临。

Oil quenching causes surface deterioration easily. Due to the high surface activity, significant thin layer carburization can occur under the action of short and high temperature oil film. In addition, the adhesion of carbon black and oil on the surface is not conducive to simplifying the heat treatment process. The development of vacuum quenching technology mainly lies in the development of single gas cooled quenching furnace with excellent performance. Double chamber furnace can also be used for gas quenching (front chamber air jet cooling), but the operation of the two stations makes it difficult to load a large number of furnace, and easy to cause workpiece deformation or change the direction of workpiece quenching. NG deformation during high temperature movement.

山东大鼎钢管厂公式计算钢管的理论重量：W=(D-S)＊S＊0.02466，其中W=钢管每米的重量；S=钢管的公称壁厚；D=钢管的公称外径，光亮管的表面质量i清洁、无氧化层、无裂纹、折叠、轧制、结疤、分离层和条纹。