怎麽（me）鑒別焊管（guǎn）材（cái）質是什麽？土方法有目測，火花鑒別，還（hái）可以使用儀（yí）器放在焊管上就能檢測出來，或者上質監局去檢測。製造焊管的鋼材一般分（fèn）為型材，板材，管材和（hé）金屬製品四大類，為（wéi）了方便進行使用和區分，又可以分為終軌輕軌、大型型鋼、中型型（xíng）鋼、小型型鋼、鋼（gāng）材冷彎型鋼，優質型（xíng）鋼、線材、中厚鋼板、薄壁焊管、電工用矽鋼片、帶鋼、無縫鋼管鋼材、焊接鋼管、金屬製品等品種。
How to identify the material of welded pipe? Soil method has visual inspection, spark identification, can also be detected by using instruments placed on welded pipe, or inspected by the quality supervision bureau. The steel products for manufacturing welded pipes are generally divided into four categories: profiles, plates, pipes and metal products. For convenience of use and distinction, they can also be divided into light rail, large section steel, medium section steel, small section steel, steel cold-formed section steel, high-quality section steel, wire rod, medium-thick steel plate, thin-walled welded pipe, silicon steel sheet for electrical purposes, strip steel, seamless steel pipe steel, welded steel pipe and metal products. And other varieties.
焊管可以通過不同的（de）製（zhì）造工藝進行區分，例如軋製方法，一般分為冷（lěng）軋和熱軋，通過這兩種軋製方法生產出的產品（pǐn）叫做冷軋焊管和熱（rè）軋焊管，除此之外其製造工藝還有軋製，鍛造，拉拔，擠（jǐ）壓等工藝。
Welded pipes can be distinguished by different manufacturing processes, such as rolling methods, which are generally divided into cold rolling and hot rolling. The products produced by these two rolling methods are called cold-rolled welded pipes and hot-rolled welded pipes. In addition, the manufacturing processes include rolling, forging, drawing and extrusion.
除了上述的區分（fèn）方法隻在（zài）還有就是根（gēn）據鋼材的含碳量進行區分（fèn），含碳量在0.04%-2.3%之間的叫做鐵碳合金，為了保證（zhèng）方管的塑性和（hé）強度（dù）一般含（hán）碳（tàn）量不超過1.7%，1.5%為最佳含碳量，除此之外鋼（gāng）材中也（yě）可以加入鐵，碳，矽，錳等元素（sù）。除了上麵我們介紹的，還具有很多的區（qū）分方法（fǎ），這裏我們就不做詳細的介紹了。
In addition to the above-mentioned method of distinguishing only according to the carbon content of steel, the carbon content is between 0.04% and 2.3% called iron-carbon alloy. In order to ensure the plasticity and strength of square tubes, the carbon content is generally less than 1.7% and 1.5% is the best carbon content. In addition, iron, carbon, silicon, manganese and other elements can also be added to steel. In addition to the above, there are many ways to distinguish between them. Here we will not give a detailed introduction.
