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1. bushing/bearing bushing 2.High Density,Zero Defects,Easy Cutting 3.OD:60-320mm Thick:8-35mm

This is Shaanxi Tongxin Continuous Cast Tube Tech Co.ltd, an exclusive manufacture in producing Continuous Cast Iron Hollow Bar which is..

 

A high quality alternative to castings due to:

No porosity, slag, shrinkage or other typical casting defects

Dense, fine-grained microstructure

Thin wall tube Min. 7mm only

No pattern or tooling costs

An excellent cost-saving alternative to low-medium carbon steel because of:

Better machinability - up to 3 times faster with better chip control (no more long, tangled, sharp chips)

Minimized deburring

Longer tool life

Improved wear resistance

10% lighter weight

Quieter due to vibration damping

30-70% material saving compare with solid bar for hollow parts

Machined parts in these and other industries are already benefiting from Tongxin material advantages:

Fluid Power --Oil & Gas—Industrial—Defense--Primary Metals--Automotive Aftermarket

 

 

Proudct Range available as follow:

 

1.Ductile Cast Iron Tube(ASTM A536 60-40-18/65-45-12/80-55-06…)  ---nodularity 90% plus, ball diameter 7~8,ball number 400~600/mm2  ---compare sand casting, at same strength, elongation increase 50~100%2.Gray Cast Iron Tube (ASTM A48 class 30,40,50)  ---Matrix: ferrite+pearlite  ---σb=150-350 Mpa, HB=150-240, E=1.1-1.7*105Mpa3. Alloy Gray Cast Iron Tube  --CrNiMo Cast Iron --CrMoCu Cast Iron --High Nb Cast Iron--High Ni Cast Iron...

 

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

 

 Application fields:

Field	Part name
machine tool	sleeve ,upright column ,clamp ring
Oil and Gas	guide sleeves ,sealing ring, sliding sleeve
Industrial    machineries	axis sleeve, gear, kawa, wear-resistant sleeve, grinding sleeve
Oil drilling	drillable packers/drillable bridge plug, suction vitta
Railway vehicle	bogie bush, braking system bushing
Metallurgical   equipment	casting lift tube ,suction tube, thermocouple protect tube
Air-condition compression machine	rolling piston ring
Automotive	dry cylinder liner, piston ring, steering pump stator, gear
Tractorshipping	dry cylinder liner, piston ring, steering pump stator, gear
Mine mechinanism	wear resist sleeve, engine cylinder

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