精軋鋼管采用新技術、冷拔（bá）方式（shì）生產高（gāo）精度冷拔鋼管──液壓缸體與傳統的切削工藝比較，精（jīng）軋鋼管具有以下特點：生產效率高：用傳統的方法生產一根內徑420毫米，12米（mǐ）長的缸筒需154小時，用冷拔方法生產隻需4分鍾。正品率高：由於鏜（táng）孔的滾壓頭兼起導向作用，在（zài）切削過程中，毛坯管由於自重產生撓度，致使滾（gǔn）壓頭和鏜刀走偏，造成廢品，正（zhèng）品率隻能達到60%左右，而用冷（lěng）拔方法生產（chǎn），正（zhèng）品率可（kě）達95%以上。
Compared with the traditional cutting process, the finishing steel pipe has the following characteristics: high production efficiency: 420 mm inner diameter, 154 hours for 12 meters long cylinder and 4 minutes for cold drawing. High rate of genuine products: Because the boring rolling head plays a guiding role, in the cutting process, because of the deflection of the blank tube due to self-weight, the rolling head and boring cutter deviate, resulting in waste products, the rate of genuine products can only reach about 60%, while the rate of genuine products produced by cold drawing method can reach more than 95%. 精軋鋼管（guǎn）能改善成品管金屬的機械性能：用拉拔（bá）方法生產，使毛坯得到30%以上的塑性變形，由於加工硬（yìng）化而使成品管金屬（shǔ）的強度限（xiàn）大為提高（gāo），一般在成品管內層強度限提高達60%。高精度冷拔管是用無縫熱軋鋼管、直縫焊管為坯（pī）料，經過（guò）化學處理後在專用冷拔機上，通（tōng）過特種變形原理設計的模具進行拉（lā）拔，生產出高精（jīng）度（dù）管。
Finished steel pipe can improve the mechanical properties of finished pipe metals: by drawing, more than 30% plastic deformation of the blank can be obtained, and the strength limit of finished pipe metals can be greatly increased due to work hardening, generally up to 60% in the inner strength limit of finished pipe. High-precision cold-drawn pipe is made of seamless hot-rolled steel pipe and straight welded pipe. After chemical treatment, it is drawn on a special cold-drawn machine through a die designed by special deformation principle, and high-precision pipe is produced.
精軋鋼管是一種（zhǒng）新型高技術節能特點，,高精（jīng）度冷拔精密鋼管的推廣應用（yòng）對節約鋼（gāng）材，提高加工工效，節（jiē）約能源所謂高精度冷拔無（wú）縫鋼管是指內、外徑尺寸精度(公差範圍)嚴（yán）格，內外表（biǎo）麵光潔度、圓度、直度良（liáng）好。
Finish-rolled steel pipe is a new type of high-tech energy-saving feature. The popularization and application of high-precision cold-drawn precision steel pipe can save steel, improve processing efficiency and save energy. The so-called high-precision cold-drawn seamless steel pipe refers to the strict dimension accuracy (tolerance range) of inner and outer diameters, and good surface finish, roundness and straightness.
