42crmo4 hollow forging / 4140 forging steel round hollow bar1

Forged steel hollow shaft bars are commonly used in industrial applications where strength, durability, and weight reduction are critical.

The key points about the forged steel hollow bar:

1. Forged steel is known for its high strength and toughness, making it ideal fro heavy-duty applications.

2. The hollow design reduces the overall weight of teh shaft while maintaining structural integrity. This is particulary useful in applications where weight is a concern but strength must not be compromised.

3.  These shafts are often used in machinery, such as in automotive industry, aerospace, construction equipemnt, and various types of industrial machinery.

4. The hollow shafts are typically manufactured through a froging process followed by machining to achieve teh desired internal diameter and external dimensions. 

5. These products can be customized in terms of length, out diameter, inner diameter, and other specifications based on specific application requirements.