钢管规格型号尺寸大全

什么是钢管？

在工业生产中，钢管是一种常见的材料，它可以根据不同的用途和要求来制备。它通常由钢材经高温加热、拉伸或压缩成圆柱形的结构物。钢管不仅强度大，而且耐腐蚀性好，使用范围非常广泛，从建筑工程到机械制造，再到石油钻井等领域都有其应用。

钢管分类有哪些？

steel tubes can be classified into several categories based on their manufacturing processes, uses and properties. The main types of steel pipes include seamless steel pipes, welded steel pipes, spiral steel pipes, ERW (Electric Resistance Welding) steel pipes and LSAW (Longitudinal Submerged Arc Welding) steel pipes.

Seamless steel pipes are made from a single piece of hot-rolled or cold-drawn tube without any welding seams. They have high strength-to-weight ratio and are often used in high-pressure applications such as oil drilling equipment. On the other hand, welded steel pipes are produced by welding two or more pieces of rolled metal together to form a continuous length. They are less expensive than seamless ones but may not have the same level of strength.

Spiral-welded pipe is another type that features an annular seam formed by coiling strip material around a mandrel to create tubular shapes with one longitudinal seam per joint. It is commonly used for water transmission systems due to its resistance against corrosion and impact.

ERW (Electric Resistance Welding) pipe is manufactured using an electric current applied through the surface contacts between overlapping edges to generate heat which melts the edges allowing them to bond together during forming process. This type is relatively inexpensive compared to others but has limited sizes available.

LSAW (Longitudinal Submerged Arc Welding) pipe employs an arc submerged in flux as it travels along the length of weld joints while filling gaps between preheated plates or strips that will eventually become tube walls after fusion process completes at both ends where they meet up again forming full circle shape providing stronger structure when fully assembled together making them suitable for transporting large volumes under pressure like pipelines carrying crude oil transportation networks etcetera; these materials come in various dimensions ranging from small diameter thin-wall tubes suitable for medical devices down larger thick-walled sections needed constructing bridges foundations building frames etcetera so there's plenty variety here too!

The above classification shows how different methods lead towards creating distinct products catering diverse needs across industries we see examples such as usage within construction sites versus use inside chemical plants where corrosive substances need protection hence requiring specialized grades which further expand range beyond just being simple straight-through passage ways!