NANJING ZHONGQING MACHINE MAKING CO., LTD.

Company Profile

We specialize in large diameter ERW welded pipe mill, precision cold-forming equipment, automatic pipe Palletizing and strapping equipment, and coiled plate sliting and cut-to-length equipment. Advanced flexible forming technology, pipes meet API 5L and 5CT standards, steel grade up to X60-X80, pipe diameter 8~711mm(25IN), wall thickness 2~28mm, PLC control, automatic parameter setting and high degree of automation.

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  ERW TUBE MILL

  ★Features：Large diameter, thick-walled，High steel grade, meet the standard API 5L and APL 5CT ★Pipe size：Ф20 ~Ф711mm(20X20~600X600mm) ★Pipe wall thickness：1.2 ~ 25mm ★Line speed：10 ~ 120m/min ★Steel grade：Q235,Q345,J55,X60-X80,N80
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  Round to Square without Changing Rolls ERW Tube Mill

  Features: ★ High commonality of rolls ★ Automatic roll adjustment ★ Good cross-sectional profile ★ Modular design
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  Directly Forming to Square ERW Tube Mill

  Scope of production: all side lengths, all thicknesses and the full range of square/rectangular tubes within the permitted range of tube mill strength and shaft length ★ Series of square/rectangular pipes can be produced by one set combined rolls. ★ Auto start for rolls adjustment, time saving, safe and accurate ★ High rigidity stand, especially suitable for high-strength steel, large wall thickness square/rectangular
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  Specialized Coiled Tubing Production Line for petroleum and oil gas

  Production line features: large diameter, high strength, high plasticity, high corrosion- resistance, non-metallic, multi-channel, intelligent. Type of production line: ★ Low carbon microalloy coiled tubing ★ Corrosion-resistant alloy coiled tubing ★ Multi-channel coiled tubing ★ High-power electric heating wire cable tubing
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  Large Diameter Pipe Mill JCO(E)

  Pipe diamter：406~1626mm Pipe wall thickness：6~50mm Pipe steel grade：L245~X120 Pipe length：6~18.3m The JCO(E) production process, with progressive pre-bend molding process, uniform stress distribution and good tube shape, ensures stable product quality and production efficiency, characterized by a wide range of product specifications and quick and easy change of specifications, which enables the production of any tube size within the range.
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  Large Diameter Pipe Mill RB(E)

  Pipe diamter:406～1626 mm Pipe wall thickness: 6～42mm Pipe steel grade:L245～X80 Pipe length: 6～18.3m RB(E) production process, the use of advanced coiling - backward bending - expanding process technology, compared with other tube production processes, the RB(E) process unit in the production ofCompared with other tube making processes, the RB(E) process unit is more economical than other processes in terms of capacity, flexibility and return on investment, and has better performance indicators such as roundness, straightness and stress uniformity.roundness, straightness, stress uniformity and other performance indicators.
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  Pipe Intelligent Palletizing and Strapping Machine

  Mechanical palletizing and strapping machine Electromagnetic palletizing and strapping machine Ductile Iron Pipe palletizing and strapping machine Pipe inner and outer wall with plastic coating, plastic lining,automatic palletizing and strapping machine
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  Precision Cold Roll Forming Machine

  Main cold forming equipment includes ★ Precision milling equipment series ★ Quick change column production equipment ★ Roofing board section steel cold roll forming equipment ★ Various customized forming equipment
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  High Speed Precision Slitting Machine

  ★ Material: mild steel, low alloy steel, stainless steel ★ Infeed width: 800~ 2000mm ★ Infeed thickness: 0.3 ~ 20mm ★ No. of slits: 2~30 slits ★ Sitting speed: 30~ 200 m/min