The factory produces high quality bar / precision light pipe. Our factory has 2 sets of 2 roller system precision rolling mill and a 3-roll bar system for high precision machine manufacturing precision bar / precision bright seamless steel bar.  3-roll bar system of high precision rolling mill is our new machinery in order to meet the needs with the new and old customers. Now it has been put into use and the precision can be controlled within the 0.03 wire, this machine produced products which precision is high, tolerance is small, finish is good, and could instead of honing tube.Production of factory, cold rolled precision light piping are smooth, uniform thickness, no oxide layer, and high precision. Steel tube inner hole can be divided into round holes, spline-based, plum-type, etc. They are widely used in automobiles, motorcycles, electric power, petrochemical, shipbuilding, aerospace, bearings, pneumatic components, fuel tank, boiler equipment, medical equipment, fitness equipment, etc. Material can be divided into: 20 #, 35 #, 45 #, 40Cr.16Mn,etc.  And can be customized all the national standard of non-target precision tubes according to needs of users. Production Specifications: Φ9 * 0.8-Φ89 * 25.  Precision wire can be controlled within 0.05 wires. Special materials, specifications can be booked in advance.
Specification of precision / fine rolled seamless pipe:

  9×0.8    / 24×2.5-6  /   48×3-6

 10×1-3   / 25×1-2     /   50×2-2.5

 12×1-2   / 25×2.5-6  /   50×3-6

 12×1-4   / 26×1-2     /   51×2-2.5

 14×1-2   / 26×2.5-4  /   51×3-6

 14×2-3   / 27×2-6     /   52×2.5-6

 14×3-4   / 28×1-2     /   54×2-2.5

 16×1-2   / 28×2.5-6  /   54×3-6

 16×2.5-4  / 31×1-2   /   57×2-2.5

 17×1-2   / 30×2.5-9  /   57×3-6

 17×2.5-3 / 32×1-2    /   60×3-6

 18×1-2   / 32×2.5-10 /   63.5×3-6

 18×2.5-6 / 34×1-2     /   65×3-6

 19×1-2   / 34×2.5-8   /   68×3-6

 19×2.5-3 / 38×1-2     /   70×3-6

 20×1-2   / 38×2.5-10 /   76×4-16

 20×2.5-6 / 40×2-2.5  /   83×4-18  

 21×1-2   / 40×3-6       / 89×4-25

 21×2.5-3 / 42×2-2.5    

 22×1-2   / 42×3-6    

 22×2.5-6 / 45×3-10   

All specifications can be customized the national standard according to customer requirements , non-standard precision / precision seamless bright bar, specifications which are not be listed can be telephone consultation!