• 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

mandrel used for the continuous mandrel rolling process and the push bench process

Description
Mandrel plays a very important role in the continuous mandrel rolling process and push bench process. Continuous rolling mill mandrel (CRM mandrel) or MPM & PQF mandrel bar are also named retained mandrels.Mandrel bars are the key parts during the production of Seamless Tubes and Pipes. Once the billet has been pierced, the Mandrel Bar supports the tube  internally during elongation and wall thickness reduction.
The Mandrel bar is the important tool for multi-stand pipe mill process,which is also called Mannesmann plug mill process or multi-stand plug mill.In the Mandrel Mill Process, a solid round (billet) is used. It is heated in a rotary hearth heating furnace and then pierced by a piercer. The pierced billet or hollow shell is rolled by a mandrel mill to reduce the outside diameter and wall thickness which forms a multiple length mother tube. The mother tube is reheated and further reduced to specified dimensions by the stretch reducer. The tube is then cooled, cut, straightened and subjected to finishing and inspection processes before shipment.
The continuous mandrel rolling process and the push bench process in the size range from approx. 21 to 178 mm outside diameter.

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

Production parameters

Materials	AISI H13, X35CrMo V51 ,4CrMoSi V1,28NiCrMoV10 etc.
Diameter	50-600mm
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.

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Package &Delivery

Customer Visit