怎麽鑒別焊管材（cái）質是什麽？土方法有目測，火花鑒別，還（hái）可以使用儀器放在焊管上（shàng）就（jiù）能檢測出來，或者（zhě）上質監（jiān）局（jú）去檢測。製造焊管（guǎn）的鋼材一般分為型材，板材，管材和金屬製品（pǐn）四大類，為了方便（biàn）進（jìn）行使用和區分，又可以分為終軌（guǐ）輕（qīng）軌、大型型鋼、中型型鋼、小型型鋼、鋼材冷彎型鋼，優（yōu）質型鋼、線材、中厚鋼板、薄壁焊管、電工用（yòng）矽鋼片、帶（dài）鋼、無縫鋼管鋼材、焊接鋼管、金屬製品（pǐn）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製造工藝進行（háng）區分，例如軋製方法，一般分為冷軋和熱軋，通過這兩種軋製方法生產出的產品叫做冷軋焊管和熱軋焊管，除此之（zhī）外其製造工藝還有（yǒu）軋製，鍛造，拉拔，擠壓（yā）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（chú）了上述的區分方法隻在還有就是根據鋼材的含碳量進行區分，含碳量在0.04%-2.3%之間的叫做鐵碳合金，為了保證（zhèng）方（fāng）管的塑性和強度一般含碳量不超過1.7%，1.5%為最佳（jiā）含（hán）碳量，除此之外鋼材中也可以加入鐵，碳，矽，錳等元素。除（chú）了上麵我們介紹的，還具有很多（duō）的區分方法，這裏（lǐ）我（wǒ）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.
