OD 355mm-720mm API Tube Mill
OD 355mm-720mm API Tube Mill
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Basic Infomation
Place of Origin: China
Brand Name: ZTZG
Certification: ISO9001/CE/SGS
Model Number: ERW720
High Light:

720mm API Tube Mill


355mm API Tube Mill

Payment & Shipping Terms
Packaging Details: All mechanical equipment is nude packing and electrical parts are packed in wooden cases
Delivery Time: 120 days
Payment Terms: T/T, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 5 sets/year
Voltage: 220/380/415/420/440V
Pipe Material: X70 N80 High Grade Steel Carbon Steel
Condition: New
Round Pipe Diameter: 355mm-720mm
Strip ThicknessStrip Thickness: 6.0-22mm
After-sales Service Provided: Online Support, Spare Parts, Field Installation, Commission
Core Components: PLC, Bearing, Gearbox, Motor,
Weight: Depends On Machine Type, About 1380T
Speed: 20m/min
Application: Energy Supply Pipe, API Pipe
Color: Any Color At Your Request
Warranty: 1 Year
Product Description

HF ERW720 Large Diameter Carbon Steel Pipe Machine for Petroleum and Gas API Tube Mill



Product Details


ERW720 high frequency longitudinal welded pipe production line / pipe making machine / tube mill is designed to produce welded pipes of 355mm - 720mm in OD and 6.0mm - 22.0mm in wall thickness, as well as corresponding square and rectangular pipe. Within suitable range of pipe diameter and wall thickness, pipe production speed can be adjusted.


Usage and Technology


API pipe mill is specialized for manufacturing straight welded pipe for petroleum and gas pipelines. Taking hot-rolled steel as raw material, it produce required pipes through cold roll forming and suitable welding methods like H.F. welding, submerged arc welding and so on. The whole production line adopts ‘ZTF’ forming technology.


Technical Flow


Scrolling up→ Uncoiling → Shear and Welding→ Spiral accumulator→ Forming → H.F. induction welding→ External burr removing→ Cooling → Sizing→ Flying saw → Run out table →Inspecting→ Packing→ Warehouse


OD 355mm-720mm API Tube Mill 0


Forming process


Round pipe Cold roll forming process Good roller design
ZTF forming process Save alt least 60% roller cost with electric control adjustment
Square & rectangular tube General round-to-square process Stable forming process
Round-to-square with Turks head Good pipe quality
Process of directly square-to-square(DSS) One set of roller can produce all tubes with electric control and automatic adjustment 


Equipment Advantages:


China's largest straight seam welded pipe production line

Apply to high strength steel and big thickness

Raw material can be steel coil and single plate

 It can utilize ZTF forming technique


Product Parameter


Product&yield Round Pipe 355mm-720mm Thickness:6.0mm-22.0mm
Length 6m-12m Length Tolerance: ±3mm
Production Speed 20 m/min
Production capacity 180,000ton/year
Consumption Mill installed capacity 1400 kw
Line Area 400m(length) ×40m (width)
worker 6-8 workers
Raw Material Carbon steel coil & steel plate Q235B(ASTM GR·D,σs 230) & High-strength steel


OD 355mm-720mm API Tube Mill 1


Product Technique

OD 355mm-720mm API Tube Mill 2

Model List



Round pipe




Working spead


ERW140 Ф60-Ф140 2.0-5.0 60
ERW165 Ф76-Ф165 2.0-6.0 50
ERW219 Ф89-Ф219 2.0-8.0 50
ERW273 Ф114-Ф273 3.0-10.0 45
ERW325 Ф140-Ф325 4.0-12.7 40
ERW377 Ф165-Ф377 4.0-14.0 35
ERW406 Ф219-Ф406 6.0-16.0 30
ERW508 Ф273-Ф508 6.0-18.0 25
ERW660 Ф325-Ф660 6.0-20.0 20
ERW720 Ф355-Ф720 6.0-22.0 20


Note: We can design and manufacture pipe making machine according to customers' requirements.

OD 355mm-720mm API Tube Mill 3

OD 355mm-720mm API Tube Mill 4OD 355mm-720mm API Tube Mill 5OD 355mm-720mm API Tube Mill 6OD 355mm-720mm API Tube Mill 7OD 355mm-720mm API Tube Mill 8

OD 355mm-720mm API Tube Mill 9OD 355mm-720mm API Tube Mill 10


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Contact Person : Jerry
Tel : 19833152524
Fax : 86-311-85956667
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