• Model NO.：as the drawing
• Application Range：Continuous Rolling Mill,Mpm,Fqm,Pqf
• Transport Package：Woodern Case
• Specification：max 20m, Diameter 100mm-500mm
• Trademark：FANGLE
• Origin：China
• Production Capacity：50000tons,Year

Basic Info.

Model NO. as the drawing Application Range Continuous Rolling Mill,Mpm,Fqm,Pqf Transport Package Woodern Case Specification max 20m, Diameter 100mm-500mm Trademark FANGLE Origin China Production Capacity 50000tons/Year

Product Description

Chromium plating mandrel used for producing seamless steel pipes and tubes

Description
Chromium plating mandrel is a very important tool used in the continuous rolling mill to produce seamless steel pipes and tubes.The Mandrel bar is the important tool for mandrel rolling tube mills during seamless tubes and pipes production .
The mandrel bar is used to roll a pre-pierced steel billet to produce a tube blank (the preliminary seamless tube). The mandrel bar determines the shape of the inner tube surface.
During production ,the mandrel bar has to stand high temperatures, shock loading and high mechanical forces. This leads to heavy wear on the affected surfaces and significant material loss.With hardened and chromed surfaces ,basic wear resistance can be achieved, and by using ultraplate coating the mandrel life will be multiplied several times.




 Products Parameters

Materials	AISI H13, X35CrMo V51 ,4CrMoSi V1,28NiCrMoV10 etc.
Diameter	80-600mm
Length	max to 20,000mm
Hardness	Meet the customers' requirements
Surface Processing	Chrome plating
Threading	Available, phosphating
Chrome plating	As per requirement,thickness 0.045-0.065mm
Process	EBT + LF (VD) + ESR
Property tests	Magnetic testing,Ultrasonic testing etc.
Lead time	about 45 days
Delivery condition	Finished machining
Application	MPM, PQF and FQM mills,Assel Mills,Accu-roll mill, Push Bench, Pilger mill,continuous tube mill etc
Market	India,Saudi Arab,Russia,Slovenia,Thailand,Vietnam etc.

Production process:
1) forging
2) rough machining
3) magnetic test
4) heating treatment
5) ultrasonic test
6) finish machining
7) chromium plating
8) thread phosphating
9) package

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