API pipe mill

Short Description:

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 which is developed by ourselves combined with advanced Japanese FFX technology. ( It is no need to change rollers in breakdown section)

 

 


Product Detail

Product Tags

Materials: L245,L360,A53,J55,N80 ,X42,X46,X52,X56,X60,X65,X70
Equipment advantages:
√ Successfully manufactured China’s large straight seam API pipe production line with Max OD 720mm
√ Apply to high strength steel and big thickness
√ ZTF forming process save roller up to 60%
√ Electric control and automatic adjustment, high precision,high roller change speed

Model

Round pipe

mm

Thickness

mm

Working spead

m/min

 

ERW140

Ф60-Ф140

2.0-5.0

60

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ERW165

Ф76-Ф165

2.0-6.0

50

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ERW219

Ф89-Ф219

2.0-8.0

50

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ERW273

Ф114-Ф273

3.0-10.0

45

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ERW325

Ф140-Ф325

4.0-12.7

40

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ERW377

Ф165-Ф377

4.0-14.0

35

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ERW406

Ф219-Ф406

6.0-16.0

30

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ERW508

Ф273-Ф508

6.0-18.0

25

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ERW660

Ф325-Ф660

6.0-20.0

20

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ERW720

Ф355-Ф720

6.0-22.0

20

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 Technical flow

Scroll up→ Uncoiler→ Straightening end→ Flattener→ Auto-Shear and Welding→ Horizontal Accumulator→ Strip UT→Forming(ZTF) → H.F. induction welding→ Removing external burr→ Removing inner burr→ Burnishing→ Online Detection→ Seam annealer→ Air cooling→ Water cooling→ Sizing→ Cut off→ Roll table→Flattening Test→ End-facing and chamfering→ Hydrostatic test→Off-line UT test→ Drifter→ inspection→Weighing and length measurement → Coating & Printing→ Packing→ Warehouse

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


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