Home » Technological Process

Hot Rolling Process
Tube Billet Inspection
Cutting
Ring Furnace Heating
Cone Roller Piercer
Mandrel Cooling
On-line Normalization Cooling
Assel Pipe Rolling
Mandrel Removal
Re-heating
High Pressure Water Descaling
Sizing Reducing
Cooling
Straightening
Ends Cutting
Electromagnetic and Eddy Current Testing
Visual Inspection
Drifting
Hydraulic Testing
Weighing and Length Measurement
Stenciling, Marking and Packing
Weighing and Warehousing
Shipment

Cold Drawing Process
Tube Billet Pneumatic Chipping
Tube Billet Cutting
Tube Billet Heating
Piercing
Pierced Tube Tipping
Pierced Tube Grinding
Pickling, Phosphating and Saponifying
Cold Drawing
Annealing
Straightening
End Cutting
Inspection
Flaw Detection
Finished Product

Cold Rolled Precision Steel Pipe Production Process Flow Chart
Raw Material Inspection and Storage
Cutting
Surface Treatment
Cold Rolling
Packaging and Shipment
Oiling
Straightening
Quality Test

LSAW Technological Process
Steel Plate
Steel Plate Analyzing and Inspection
Vacuum Hanging
Ultrasonic Test for Steel Plate
Edge Milling
Pre-bending
J Shaped Forming
Rounding
Inner Cleaning
Tab Removal
Automatic External Welding
Automatic Internal Welding
Tab Welding
Tack Welding (CO2 Shielded Welding )
O Shaped Forming
X-Ray Testing
Automatic Ultrasonic Detection
End Facing
Washing


Mechanical Diameter Expanding
Washing
Straightening
Hydrostatic Testing
Weighing and Length Measuring
Pipe End Magnetic Particle Test (MPT)
Pipe End Circumferential UT for Detection of Laminar Imperfection
Pipe End X-Ray Testing
X-Ray Testing
Mechanical End Beveling
Pipe End Welding Seam Burnishing
Automatic UT
Final Inspection
External Coating
Internal Coating
Marking
Delivery

Pipe Welding Process Flow Chart
Uncoiling
Leveling
End Cutting
End Welding Shearing
Supercoil Accumulator
Edge Trimming
Ultrasonic Testing the Strip Edge and Body
Forming
High Frequency Welder
Electric Induction Welding
Ultrasonic Testing the Welding Seam
Annealing (normalizing) after Welding
Air Cooling
Water Cooling
Sizing


Flying Shear
Washing
Tube Cutting
Flattening Testing
Straightening
End Facing
Hydrostatic Testing
Ultrasonic Testing for Weld Seam
Ultrasonic Testing for Pipe End
Visual and Dimensional Inspection
Weighing and Length Measuring
Marking
Coating
Pipe-end Protection Ring
Bundling
Shipping

Main Products
  • Cold Drawn Seamless Boiler TubeThe cold drawn seamless boiler tube is particularly suitable for manufacturing steam boiler, pipeline and other appliances with high and above pressure. The product with other steel grade can also be provided after consulting.
    Outside Diameter: 10-530 mm
    Wall Thickness: 1.3-100 mm ...
  • Seamless Casing PipeThe seamless casing pipe is produced especially for use in oil well drilling to support the well wall during the drilling process and after the well completion. Thus, the drilling process and the whole oil well after well completion can be ensured working normally. The production standard of the product is API SPEC 5CT and the main steel grade includes J55, K55, N80, etc.