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Mandrel bar

Mandrel bar
Mandrel bar
Product Description

Mandrel bar is specifically needed for producing different kinds of seamless tubes. This is generally designed for offering general purpose hot steel applications. The steel billet is generally rolled over it with the aid of grooving roll in a stretching manner while reducing the rolling process. Designed with perfection, this range is ideal for determining the shape of inner tube surface. This bar is designed with the perfect combination of advanced machinery system and quality checked materials. we are presenting Mandrel Bar to our clients in numerous specifications.

Key features:

  • Robust construction
  • Corrosion proof surface
  • Optimum length

1. Chrome plating thickness :55~70μm

2. Chemical composition (m%)

Grade  C Si Mn S P Cr
H13
(4Cr5MoSiV1)
0.32~0.45 0.80~1.20 0.2~00.50 ≤0.008 ≤0.012 4.75~5.50
Mo Ni V H O  
1.10~1.75 ≤0.25 0.80~1.20 ≤2PPm ≤20PPm  

3. Mechanical property

Size(mm) Tensile strength Mpa  Yield strength Mpa  Elongation (%)
≤200 1127-1274 ≥931 ≥8
≥200 1078-1274 ≥882 ≥8




Size(mm) Reduction of area (%)  Impact value  Hardness (HRC)
≤200 ≥25 ≥20 60-62
≥200 ≥25 ≥20 60-62
Contact Us

Oversea department: Rm 1304 Huawen International Tower, No.-999, hongshan West Road, Shanghai, Shanghai, 200051, China
Phone :+8613916033018