What are the main factors causing seamless steel tubes to crack? The main points are as follows:

Raw Material Selection

Some seamless steel tube manufacturers seek lower prices and opt for round steel produced by smaller steel mills for processing. However, this round steel often contains numerous impurities, bubbles, laminations, and pores, which can easily lead to cracking issues after processing. Changzhou Tianzhan Steel Tube purchases its round steel exclusively from reputable large-scale manufacturers such as Baogang, Huai Steel, Zhongtian, and Xingcheng, ensuring a reliable source.

2. Inadequate temperature control in heat treatment

Small manufacturers lack production experience and technology. Workers in the workshop can only rely on heating temperature and duration to determine if the heat treatment of steel pipes is sufficient, as heat treatment alters the mechanical properties of the pipes. However, most factories do not have clear standards for different steel grades, wall thicknesses, and mechanical properties, nor do they have testing equipment to judge whether the pipes have reached the performance specifications required by the customers.