精軋鋼管就是精軋無縫鋼管，冷拔無縫鋼管的主要生產流程 管坯及坯加熱、管坯的穿孔、鋼管的延伸、精軋鋼管的軋製、鋼（gāng）管定徑與減徑、鋼管的冷卻和（hé）精整 或者（zhě）可以說是鋼胚的加熱、穿孔、熱紮、酸洗、冷拔、碳燒（shāo）、切頭、噴標、包裝、成品冷拉鋼管（guǎn）是在常溫條件下，以超過原來鋼筋屈（qū）服點強（qiáng）度的拉應（yīng）力，強行拉伸鋼筋（jīn），使鋼筋產生塑性變形以達到提高鋼筋屈服點強度和節約鋼材為目（mù）的。
Fine-rolled steel pipe is the finely-rolled seamless steel pipe. The main production process of seamless steel pipe is heating billet and billet, perforation of billet, extension of steel pipe, rolling of steel pipe, sizing and reducing of steel pipe, cooling and finishing of steel pipe or heating of steel embryo, piercing, hot binding, pickling, cold drawing, carbon burning, cutting head, spraying mark, package. Cold-drawn steel pipes are loaded and finished at room temperature, in order to increase the yield point strength of steel bars and save steel, the tensile stress exceeding the original yield point strength of steel bars is forced to stretch steel bars so as to produce plastic deformation of steel bars. 精軋鋼管的概念：以節約鋼材、提高鋼筋屈服強度為目的，以超過屈（qū）服強度而又小於極限強度的拉應（yīng）力拉伸鋼筋，使其產（chǎn）生塑（sù）性變形的做法叫鋼筋冷拉。產品（pǐn）廣（guǎng）泛應用於：機械設備：木工（gōng）機械、陶瓷機（jī）械、造紙機械、玻璃機（jī）械、食品機械、建築（zhù）機械、塑料機械、紡織機（jī）械、千（qiān）斤（jīn）頂、液壓機等。
The concept of finish rolling steel pipe: for the purpose of saving steel and improving the yield strength of steel bars, the method of cold drawing of steel bars is to produce plastic deformation by stretching steel bars under tension stress which exceed the yield strength and are less than the ultimate strength. Products are widely used in: machinery and equipment: woodworking machinery, ceramic machinery, paper machinery, glass machinery, food machinery, construction machinery, plastic machinery, textile machinery, jacks, hydraulic presses and so on.
磁力機械油封的工作原理（lǐ）：磁力機械油封由靜環和動環兩部分組成，靜環材料（liào）為高強（qiáng）度磁（cí）性不鏽鋼合金，安裝於密封座內;動環安裝於轉動軸上（shàng），其上鑲嵌有磁性材料，並環嵌（qiàn）由碳和石墨（mò）製（zhì）作的耐（nài）磨（mó）且潤滑良好（hǎo）的密封材（cái）料。當精軋鋼管的磁力油封動靜環安裝完（wán）畢貼合（hé）後，無論轉軸轉動與否，動環上磁性材料的磁力始終保證動靜環之間是緊密貼合的，從（cóng）而達到密封效果。磁（cí）力油封的（de）這種工（gōng）作原理，使其真正實現了高、低轉速和靜止時的零泄露。此外，這（zhè）種油封還有使用壽命長，結構簡單，維護工作量小（xiǎo）等優點。
The working principle of the magnetic mechanical oil seal: the magnetic mechanical oil seal consists of a static ring and a moving ring. The material of the static ring is a high strength magnetic stainless steel alloy, which is installed in the seal seat. The moving ring is installed on the rotating shaft, which is inlaid with magnetic material, and the ring is inlaid with wear-resistant and lubricating sealing material made of carbon and graphite. When the magnetic oil seal dynamic and static rings of the finishing rolling steel pipe are installed and fitted, the magnetic force of the magnetic material on the dynamic rings always ensures that the dynamic and static rings are closely fitted, regardless of whether the rotating shaft rotates or not, so as to achieve the sealing effect. The working principle of magnetic oil seal makes it realize zero leakage at high, low speed and static state. In addition, the oil seal has the advantages of long service life, simple structure and small maintenance workload.
