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Seamless Pipe Process Equipment

Using the mandrel mill method and plug mill method, these mills produce high grade small and medium diameter pipes with excellent dimensional accuracy. Seamless pipes play an active role as the arterial system in a wide range of modern industries, in various piping applications, and oil well tubulars. ESS produces these products by a dynamic manufacturing process.

Product types

Boiler tubes
Line pipes
OCTG
Pipes for general structural use
Pipes for machine structural use
Material pipes 

Square pipes etc

Mandrel mill

Elongator

Plug mill




Small diameter seamless pipe mill

Medium diameter seamless pipe mill



Capacity 
444,000 tons/year

Capacity 
468,000 tons/year



Equipment
Mandrel mill process_____________1
Heat treatment equipment________3
Upsetter_______________________1
Thread cutting line_______________3

Equipment
Plug mill process___________1
Heat treatment equipment___2
Thread cutting line_________1



Product 
dimensions
Outside diameter 25.4-177.8 mm
Wall thickness 2.3-40 mm
Length 4.0-22.3 m

Product 
dimensions
Outside diameter 177.8-426.0 mm
Wall thickness 5.1-65 mm
Length 5.5-13.5 m



Regenerative burner type rotary hearth heating furnace


Piercer





After rotary hearth heating furnace


Manufacturing Flowchart







ERW Pipe Process Equipment

At the electric resistance welded (ERW) pipe mills, steel strip are formed into a pipe shape by roll forming, and then welded continuously by a high frequency electric resistance welder or high frequency or medium frequency induction heating welder to produce uniform, high strength steel pipes. The 26 mill manufactures ERW pipes with the worlds largest outside diameter, at 660.4mm(26 inches) and largest wall thickness, at 25.4mm (1 inch).

Medium diameter ERW pipe mill (26"mill)


Capacity
480,000 tons/year
Manufacturing Flowchart

Equipment
Pipemaking mill_________________1    
Maximum pipemaking speed: 45 m/min
Welding method: Automatic heat input 
controlled high frequency electric 
resistance welding(300KHz)
Forming method: Cage roll forming
Breakdown roll forming


Product 
dimensions
(pipe)
Outside diameter 318.5-660.4 mm
Wall Thickness 4.0-25.4 mm
Length 5-20 m

Product 
dimensions
(square column)
Outside diameter 250-550sq. mm
Wall thickness 6-25 mm
Length 6-18 m




Product types
Small diameter ERW pipe mill(3"6"mill)


Capacity
190,000 tons/year


Water line pipe  Coated pipes
Line pipe             Pipe piles
Boiler tubes        Square columns
OCTG
Pipes for general structural use
Pipes for machine structural use
Stainless steel tubes for exhaust gas system use etc
Equipment
Pipemaking mill__________________2
Maximum pipemaking speed: 100 m/min
Welding method: Automatic heat input 
controlled high frequency or medium 
frequency induction heating welding
Forming method: CBR forming
Breakdown roll forming

Worlds largest outer diameter/heaviest wall full cage roll forming (26 inch) mill (Medium diameter ERW pipe mill)


SMD(Super Mini Dril)         Auto exhaust manifold

Product
dimensions
Outside diameter 31.8-165.2 mm
Wall thickness 2.0-12.7 mm
Length 4-18 m

CBR forming mill (Small diameter ERW stainless pipe mill)        Cage roll forming in CBR forming mill