Tenjan: Seamless steel pipe production process and production cycle details

As an important industrial material, seamless steel pipe is widely used in petroleum, chemical, machinery, construction and other fields. Its production process is complex and delicate, involving a number of links. Today, Changzhou Tenjan Steel Tube Co., Ltd. will discuss the production process of seamless steel pipe and its production cycle.

1. Round steel procurement

In the production process of seamless steel pipe, the first step is the procurement of round steel. Under normal circumstances, the cycle time for purchasing round steel from steel mills is 3-5 days. However, due to the recent epidemic, the steel mills and supporting logistics have not fully resumed normal operation, resulting in a longer procurement cycle. Nonetheless, many customers are still skeptical as to why they don't stock up in advance.

As a non-standard customized manufacturer, Tianzhan's monthly production capacity reaches 5.000 tons and produces numerous steel grades and specifications. Therefore, hoarding a large amount of raw materials is not operational. In fact, the vast majority of tube manufacturers purchase the appropriate round steel according to customer orders (except for large standard tube manufacturers). This on-demand procurement not only ensures the freshness of the material, but also reduces inventory costs.

2. Hot piercing

The first step in the production of seamless tubes is the heating and piercing of round steel into billets. It should be noted that the billet steel used for piercing is different from ordinary hot rolled round steel. The smallest size of billet steel is Φ50 mm, followed by Φ60. Φ70 and other different sizes. In the production process, piercing is carried out according to the specification of the material and the heating temperature in descending order, and it is not possible to interlace the production.

Seamless steel pipes with finished product specifications of Φ50 or less are usually pierced using Φ50 billet steel. Some thick-walled pipes may require the use of Φ60 or Φ70 billet steel. This also directly leads to a higher demand for Φ50 billet steel. In order to meet the material demand of customers, the production department will make a reasonable scheduling plan by taking into consideration the time of placing the order, the order delivery date and the production process, and other factors.

Normally, the scheduling cycle is 3-7 days when the perforating furnace is in normal working condition. However, due to the epidemic, the perforating furnace has been out for a long time, and the maintenance after the resumption of production has also had a certain impact on normal production. As a result, the perforation's scheduling cycle at this stage is about 7-15 days. Despite the prolongation of the scheduling cycle, we hope that new and old customers can give us understanding. Tianzhan will do our best to ensure that every customer's needs are met and the quality of every seamless steel pipe is up to standard.

Summarize

To summarize, the production of seamless steel pipe involves many links, each of which has its own specific requirements and challenges. Through scientific management and reasonable scheduling, Changzhou Tenjan Steel Tube Co., Ltd. is confident to overcome these difficulties and provide better products and services to customers.