OD 355mm-720mm API Tube Mill

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

Forming process

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 Technique

Model List

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

Please feel free to contact me.

ZTZG is one of three executive directors of 'China Steel Structure Association' 

and one of China's top ten pipe making machinery brands. 

With over 20 years of sales and R&D, ZTZG has acheived multiple China's first along with

several patents that lead the pipe making industry in China. We look foward to make

better, steadier, and more economical machines in the future.