SSAW steel pipe yield and loss rate

The SSAW steel pipe factory places significant emphasis on minimizing losses during production. From the steel plate to the finished SSAW steel pipe, the loss rate during welding directly impacts the cost of production.

Yield Calculation for SSAW Steel Pipe

The formula for calculating the yield of SSAW steel pipe is as follows:

b=QG×100b = \frac{Q}{G} \times 100b=GQ×100

Where:

bbb is the finished product rate, expressed as a percentage.

QQQ is the weight of qualified products, in tons.

GGG is the weight of raw materials, in tons.

Yield is inversely related to the metal consumption coefficient KKK:

b=G−WG×100=1Kb = \frac{G - W}{G} \times 100 = \frac{1}{K}b=GG−W×100=K1

The primary factor affecting material productivity is the metal losses incurred during production. Therefore, improving material productivity largely involves reducing these losses.

Variability in Yield Calculation

Different steel rolling workshops use varying raw materials and produce different rolled products. For example, some workshops use steel ingots, which are opened into blanks and then rolled into materials. Others use steel billets directly to roll into materials or use steel as raw materials to process finished steel products. This variability makes it challenging to use a single yield calculation method to compare metal harvesting and reflect differences in production technology and management levels.

HSCO SSAW steel pipe factory notes that there are different methods for calculating yield, such as the yield of steel ingots, steel billets, and foreign billets. Each rolling shop should calculate yield according to its specific situation.

Loss Rate Calculation for SSAW Steel Pipe

The loss rate in SSAW steel pipe manufacturing refers to the ratio of waste materials during the production process. According to years of statistical analysis by professional and technical personnel, the loss rate in SSAW steel pipe manufacturing ranges between 2% and 3%. The primary waste components in the manufacturing process include the initial section of the pipe, the tail, the milled edges of raw materials, and necessary production steps. If the pipe is not milled and tailed according to standard procedures, the grid rate of the produced steel pipe is significantly reduced.

Controlling the Loss Rate of SSAW Steel Pipe

- Cutting and Tailing: After forming the SSAW steel pipe, it is crucial to cut the first piece and remove the tail to ensure the steel pipe's specifications and appearance. This process generates waste but is essential for maintaining quality.

- Processing Raw Materials: Before welding, the strip steel requires milling and other treatments. This step also produces waste materials, which must be managed to control the overall loss rate.