焊管是天燃（rán）氣彈道正當中經常出現管材，有關（guān）直徑不等426mm（或508mm）的焊管通常被進行稱號花木徑焊管，依照銲接成管方法，可進行劃成（chéng）螺（luó）旋形（xíng）焊管和直縫（féng）焊管關於兩種。螺（luó）旋形焊管（guǎn）是將低碳碳素整體結構鋼或低鋁合金整體結構鋼鋼帶按準譜兒的螺（luó）旋形線的觀點（diǎn）（又叫有關成型角）卷成管坯，接下來將管縫（féng）銲接開始釀成（chéng），它能夠用較窄的帶鋼生（shēng）產大有關直徑的無縫鋼管（guǎn）。螺旋形焊管重點是螺旋形埋弧焊管（SSAW），在本國大範圍可（kě）用於多種天燃氣彈道的開展建設，其規（guī）格用外徑*壁厚表（biǎo）明。螺旋形焊管有單麵焊的和雙麵焊的，焊管應保障水壓進行試驗、焊縫的抗拉極限抗拉強（qiáng）度和冷彎使用性能要參加明確（què）要求。
Welded pipe is a common material in gas pipeline. Welded pipe whose diameter is larger than 426 mm (or 508 mm) is generally called large diameter welded pipe. According to the way of pipe forming, it can be divided into spiral welded pipe and straight welded pipe. Spiral welded pipe is made by coiling low carbon structural steel or low alloy structural steel strip into billet according to a certain angle of helix (also known as forming angle), and then welding the pipe seam. It can produce large diameter steel pipe with narrow strip. Spiral welded pipes are mainly spiral submerged arc welded pipes (SSAW), which are widely used in the construction of various gas pipelines in China. Their specifications are expressed by external diameter * wall thickness. Spiral welded pipe has one-sided welding and two-sided welding. Welded pipe should ensure that hydraulic test, tensile strength and cold bending properties of weld seam meet the requirements. 直縫焊管是將熱軋板卷經曆有關成（chéng）型機有關成型後，使鋼卷蛻（tuì）變（biàn）為較（jiào）為狡猾的圓筒狀（zhuàng），使用一再脈動電流的集膚效果和好像效果或通量層下受（shòu）到（dào）的電弧開展銲接（jiē），使管坯邊際受到撤（chè）銷，並在準譜（pǔ）兒的鎮壓名著用下熔合，經（jīng）到最後比賽有（yǒu）關成型。在這（zhè）當中（zhōng）管坯邊際使用一再脈動電流撤（chè）銷的被進行稱號一再（zài）直縫（féng）焊管（ERW），使用電弧撤銷的被進行稱號直（zhí）縫埋弧焊管（LSAW）。
Straight seam welded pipe is formed by hot-rolled sheet coil through forming machine, so that the coil is transformed into a smooth cylindrical shape, using skin effect and proximity effect of high frequency current or arc burning under flux layer to weld, so that the edge of the billet is heated and melted, and fused under certain extrusion force, and finally cooled and formed. The billet edge melted by high frequency current is called high frequency straight seam welded pipe (ERW), and the tube edge melted by arc is called straight seam submerged arc welded pipe (LSAW).
直縫焊管重點生產（chǎn）原料是（shì）低碳鋼熱軋板卷、熱軋帶，在原油（yóu）、冶金（jīn）學、建築（zhù）物、露天煤礦、海港、機械等業務領域大範圍可用於原油自然氣輸氣、低（dī）氣壓（yā）水瓦斯輸氣、礦用半流體輸氣、帶式輸氣機托輥、機動車輛進行趕上軸等等（děng）。
The main raw materials of straight seam welded pipe are low carbon steel hot rolled sheet coil and hot rolled strip. It is widely used in petroleum, metallurgy, construction, coal mine, port, machinery and other industries for oil and gas transmission, low pressure water gas transmission, mine fluid transmission, belt conveyor roller, automobiles transmission shaft, etc.
