How long is the production cycle of seamless steel pipe?
If you want to understand how long the production cycle (production time) of seamless steel pipe is, you need to first understand what the production methods of seamless steel pipe are.
The processing methods of seamless steel pipe are mainly as follows:
Hot rolled. Hot rolling process is to heat the billet to more than 1000℃, through rough rolling, finishing rolling and other processes and made, mainly suitable for the production of carbon steel and low alloy steel pipe, can produce large diameter steel pipe. Generally, there are MOQ requirements, and the MOQ of hot-rolled seamless steel pipe is higher. When the demand is low, it can be ordered according to the production schedule of different specifications in the steel mill. Large caliber hot rolled seamless pipe, tens of tons of small single with the steel mill production plan, will not arrange a separate production plan, the product production speed is fast. However, the production cycle of small batch orders is generally more than 20 days (the specific time should be arranged according to the production schedule).
Cold drawn. Cold drawing is a processing method to reduce the diameter of seamless steel pipes, which is mainly used for the production of small-diameter steel pipes. The production quantity is flexible, the minimum order quantity is low, and the size order can be produced. Hollow drawing outside diameter error is small, the surface is smooth, suitable for products with higher outside diameter requirements, and the inside diameter error is large. If the inner and outer diameters have high error requirements, you can choose the core (inner diameter sandwich rod) cold drawing. The production speed is fast, and the production cycle is generally about 7-10 days (the specific time needs to be arranged according to the production schedule).
Cold rolled. Cold rolling is carried out at room temperature and rolled by a cold mill, which can produce small diameter seamless steel pipes. The surface of the inner and outer diameter of the steel pipe is bright, and the error is small. Large and small batches are suitable for customization, the processing speed is slow, and the production cycle is generally about 10-15 days (the specific time needs to be arranged according to the production schedule).
Machining. Machining is the drilling of seamless steel pipes, threading and other mechanical processing, so that it becomes the required shape and size.
Check. The production of seamless steel pipe size, appearance, performance and other aspects of inspection to ensure product quality.
