精軋鋼管采用新技術、冷拔方式生產高精度冷（lěng）拔（bá）鋼管──液壓缸體（tǐ）與傳統的切削工（gōng）藝比較，精（jīng）軋鋼管（guǎn）具有以下特點：生產（chǎn）效率高：用傳統的方（fāng）法生產一根內徑420毫米，12米長的缸筒需154小時，用冷拔方法生產（chǎn）隻需4分鍾。正（zhèng）品率高：由於（yú）鏜孔的滾壓頭兼起導向（xiàng）作用（yòng），在切削過程中，毛坯管由於自重產（chǎn）生撓度，致使滾壓頭和鏜刀走偏，造成廢品，正品率隻能達到60%左右，而用冷拔方法生產，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（gāng）管能改善成（chéng）品管（guǎn）金屬的（de）機械性能：用拉拔方法生產，使毛坯得到30%以上的塑性變形，由於加工硬化而使成品管金屬的強度（dù）限大為提高，一般在成品管內層強度限提高達60%。高精度冷拔管是用無（wú）縫熱軋（zhá）鋼管、直縫焊管為坯料，經過化學處理後在專（zhuān）用冷拔機（jī）上，通過特種（zhǒng）變（biàn）形原理設計的模具進行拉（lā）拔，生產出（chū）高精度管（guǎn）。
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（guǎn）是一種新型高技術（shù）節能特點，,高精度冷拔精密鋼管（guǎn）的推廣應用對節約鋼材，提高加工工效，節約（yuē）能源所謂高精度冷拔無縫鋼管是指內、外徑尺寸精度(公差（chà）範圍)嚴格（gé），內外表麵光潔度、圓度、直度良好（hǎo）。
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.
