Shaanxi Tongxin Continuous Cast Tube Tech Co.ltd, a leading manufacture which specialize in producing continuous cast iron bar over ten years.base on our patent tech "Vertical upward continuous casting", we are unique company can produce Continuous Cast Iron Hollow Bar and related products

(High quality Cylinder sleeve, Guide Bushing, Piston ring, Ring carrier, Engine bearing , Brake drum, Bridge plug etc)

Advantages of continuous cast iron hollow bar:
---High Density----Zero Defects ----Wear Resistance ----Fatigue Strength----High Purity----Corrosion Resistance ----Free Machining---Vibration Damping...

Our supply of concast hollow bars as follow:

1.Ductile Cast Iron Tube/bar(60-40-18,65-45-12,80-55-6,100-70-3)
  ---nodularity 90% plus, ball diameter 7~8,ball number 400~600/mm2
  ---compare sand casting, at same strength, elongation increase 50~100%
2.ADI(Austempered Ductile Iron)
  ---σb≥1200Μpa,δ≥2%,ak≥35J/mm2
3.Gray Cast Iron Tube/bar(30,40,45,50)
  ---Matrix: ferrite+pearlite
  ---σb=150-350 Mpa, HB=150-240, E=1.1-1.7*105Mpa
4. Alloy Gray Cast Iron Tube/bar
  --CrNiMo Cast Iron --CrMoCu Cast Iron --High Nb Cast Iron --High Ni Cast Iron...

5.Specification:
  ---Cross-Section: Round, Rectangle, Elliptic, Hexagonal
  ---OD:60-320mm,Thickness:7-38mm

Our material could be widely used in hydraulic,automotive,machine tool,oil tool spare parts ,which is good alternative over carbon steel with lower machining cost, weight lighter, drilling and turning faster to prolong tools life, deburring, vibration damping ,,, By far, our tubes already exported to USA, UK, Australia etc, got highly praise by our foreign clients.  Pls try our tubes, you'll be satisfied and love our material absolutely.