冷（lěng）拔無縫無縫鋼管據有很好的抗破（pò）壞性，冷拔無縫無縫（féng）鋼管的生（shēng）化使用性能重點參加於鋼的化持續學成分（fèn），安排整體結（jié）構和鋼的著名（míng）度還有冷拔無縫無（wú）縫鋼管的熱采用相應辦法解（jiě）決方（fāng）法等，冷拔無縫無縫鋼管經常（cháng）出現的生產工藝使用性能壓扁、擴口、卷邊、躬身行禮、銲接等。冷拔無縫無縫鋼管經常出（chū）現的進行裂縫實際問題有：
The physical and chemical properties of cold-drawn seamless steel pipe mainly depend on the chemical composition of the steel, the structure and purity of the steel, and the heat treatment method of the cold-drawn seamless steel pipe. The common technological properties of cold-drawn seamless steel pipe are flattening, flanging, bending and welding. Common defects of cold-drawn seamless steel tubes are as follows: a. 重要性進行裂縫：裂痕、內折、外折、軋破、離層、結痂、拉凹、凸包（bāo）等（děng）。
A. Dangerous defects: cracks, internal folding, external folding, rolling, delamination, scarring, concave drawing, convex hull, etc.
b. 通常性（xìng）進行裂縫：麻坑（kēng）、青線、燒傷、碰傷、輕輕的內、外秦直道、輥印等。
B. General defects: pits, green lines, scratches, bruises, slight internal and external straight paths, roll prints, etc.
進行裂（liè）縫實際問題形成原因：
The causes of defects are as follows:
① 因為管坯（pī）的要樣兒進行裂縫或外部（bù）進行裂（liè）縫所產生的。
It is caused by the surface or internal defects of the billet.
② 生產完整過程（chéng）中形成（chéng）的，如研製生產工藝形式參（cān）數設計（jì）歪點（diǎn）子（zǐ）確，胎具要樣兒不僅滑，進行滑（huá）溜具體條件特別，孔型設計及作出調整進行不足理。
(2) During the production process, such as incorrect design of rolling process parameters, non-smooth surface of die, poor lubrication conditions, unreasonable pass design and adjustment.
③管坯(冷拔無縫無縫鋼管)在受到研製，熱（rè）采用相應辦法解決還有矯直完整過程中，在滿足相關條件時其主要原（yuán）因在於受到熱度進行控製不對，蛻變石灰（huī）石勻，受到比賽運行（háng）速度進行不（bú）足理或矯直蛻變量太（tài）大而形成過大的較為留下（xià）剪應力，這樣的話也有或許進行引起（qǐ）冷拔無縫無縫鋼（gāng）管形成要樣兒裂（liè）痕。
(3) During hot rolling, heat treatment and straightening of cold-drawn seamless steel tube, if excessive residual stress occurs due to improper control of heating temperature, uneven deformation, unreasonable heating and cooling speed or excessive straightening deformation, surface cracks may also occur in cold-drawn seamless steel tube.
當前冷拔無縫無縫鋼管（guǎn）經常出現的進行裂（liè）縫實際問題目前已經在更加很大具體（tǐ）程度（dù）發展行加以解決，接下來如果要多從鋼鐵的生產工藝四山五嶽手，管理在（zài）繼續的持續發展完整過程中獲得其中一個較好的持續發展。
At present, the common defects of cold-drawn seamless steel tube have been solved to a great extent. In order to achieve a better development in the follow-up process, it is necessary to start with the steel technology.
