Q. How is Carbinox Tube made?
A. Carbinox tube is manufactured by cold rolling mild steel strip and as the formed tube passes through the welding heads a stainless steel strip is formed around the mild steel tube and the the combination is passed through final rollers and welded.  As the product cools the mechanical bond forms and the tube is cut to length.


Q. What grade stainless and mild steel  does Carbinox use?

A. The stainless steel outer is available in almost any grade but standard stocks are in stainless grade 304 and 316. The mild steel is in grade S235. 


Q. Is the bond airtight?
A. The rolling process ensures that the Stainless outer is rolled around the mild steel core leaving no air gap as the thinner Stainless steel is forced to exactly follow the contour of the inner mild steel.


Q. How thick is the stainless steel layer?
A. Standard stock lines are in 0.5mm to 1mm gauge but other thicknesses are available.  Bespoke overall thicknesses, including the mild steel from 1.0mm to 15mm is also available to order .


Q. Can Carbinox Stainless Steel Tubing be welded?
A. The material is welded as normal stainless steel e. g. TIG welding, MIG technique with argon shielding gas.


Q. Can Carbinox be bent and formed?
A. The material can be manipulated in any way that would normally be used for stainless steel or mild steel. Elongation values are available on the certification for both the mild steel and the stainless steel.  Rotary draw bending, with wiper blade and mandrel is the recommended bending method. 


Q. Can Carbinox be saw cut?
A. Material can be cut using normal saw blades for stainless steel e.g 5/8 variable pitch.


Q. Can Carbinox be laser cut?
A. Material is suited to all usual tube laser cutting with oxygen or nitrogen.


Q. What is its lifetime of the stainless steel?
A. The outer layer is made of recognised and certified grades of stainless steel and has the usual inherent properties associated with the grade .


Q. What is its lifetime of the carbon steel?
A. The inner core is made of recognised and certified grades of mild steel and would have the usual inherent properties associated with the grade.


Q. What about internal corrosion?
A. In most cases the ends of the tubes will be capped or joined by welding to other similar sections, leaving the inner with no exposure to air or moisture to form corrosion.  For applications that require internal corrosion resistance the inner core formed from pre galvanised strip for certain applications.


Q. What products is Carbinox Stainless Steel used for?
A. Carbinox material is most commonly used for balustrades, sign and lighting posts, street furniture, bollards, barriers, cycle stands and trolley bays.  The bigger and thicker the application the bigger the saving over conventional Stainless Steel products.


Q. Is it possible to make to specific tube sizes?
A. Any size of tube can be manufactured from 12.4mm up to 300mm with various wall thicknesses. Please ask if you have a specific requirement.


Q. Is the material certified?
A. Material test certificates are available with all Carbinox tube. These will show chemical analysis and mechanical properties of the carbon steel and stainless steel.


Q. What polished finish is available?
A. Bright polished or  “satin” finish grit grade 220/240 is available. Any particular polished finish is available to order.


Q. Can Carbinox be painted?

A. The material will easily take both wet paint and powder coating finishes providing normal priming and preparation is carried out.


Q. Can Carbinox be bought in stock tube lengths? 
A. Yes, Carbinox can be bought in standard 6 metre stock lengths - MOQs and prices are available upon request.