精軋鋼管采用新技術、冷拔（bá）方式生產高精度冷拔鋼管──液（yè）壓缸體與傳統的切削工藝比較，精軋鋼管具有以（yǐ）下特（tè）點：生產效率高：用傳（chuán）統的方法生產一根內徑420毫米，12米長的缸筒需（xū）154小時，用冷（lěng）拔方法生產隻需4分鍾。正品率高：由於鏜孔（kǒng）的滾（gǔn）壓頭兼起導（dǎo）向作用，在切削過程中，毛坯管由於自重產生撓度，致使滾壓頭和鏜刀走偏，造成廢品，正品（pǐn）率隻能達到60%左右，而（ér）用冷拔方法生產，正品率可達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%. 精軋鋼管能改（gǎi）善成品管（guǎn）金屬的機械性能：用拉拔方法生產，使毛坯得到30%以上的塑性變形，由於加工硬化而（ér）使成品管金屬的強（qiáng）度限大為提高（gāo），一般在成品管內層強度限提高達60%。高精度冷拔管是用（yòng）無縫熱軋鋼管、直縫焊管為坯料，經過化學處理後在專（zhuān）用冷拔（bá）機上，通過特種變形原理設計的模具（jù）進行拉拔，生產出高精度管。
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.
精軋鋼管是一種新型高技術節能特點，,高精度冷拔精密鋼管的（de）推廣（guǎng）應用對節約（yuē）鋼材，提高加（jiā）工工效，節約能（néng）源所謂高精度冷（lěng）拔無縫鋼管是指內、外徑尺寸精度(公差範圍)嚴格，內外表麵光潔度、圓度（dù）、直度良好。
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.
