Twenty Million Tons Steel Pipe China Manufacturer

Youfa Quality Assurance

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Our Advantages ofGalvanizing

Hot-dip galvanizing has the advantages of uniform coating, strong adhesion, good corrosion resistance, and long service life. Especially in harsh environments, such as humid, rainy, acid rain, salt spray and other environments, the performance of hot-dip galvanizing is more prominent. The steel substrate and the molten plating solution undergo complex physical and chemical reactions to form a corrosion-resistant zinc-iron alloy layer with a tight structure. The alloy layer, pure zinc layer, and steel substrate are fused together. Therefore, it has strong corrosion resistance.

Youfa API Certificate

Our Approach ToQuality

To be a recognized stainless steel tubes company in the industry, we were firstly awarded the certifications to comply with international quality and environment standards. Our quality system lays the stress on the prevention rather than detection. We focus on the needs of both our employees and customers. We won’t mark time, we will keep working on being a technical, diversified and large-scale manufacturer.

Steel Pipes and Scaffolding Production Processes

Standardized execution of each step of the process is the basis of our product quality
  • Raw material inspection

    Unpacking/Inspection

    Picking

    Picking&Solvent

    Drying

    Drying

    Hot dipped galvanizing

    Hot dipped galvanizing

    Outside blasting

    Outside blasting/Inside cooling

    Water cooling

    Water cooling

    Passivation

    Passivation

    Proceed inspection

    Proceed inspection

    Marking

    Marking

    Packing

    Packing

    Storage

    Final examination&Storage

  • Open coil

    Open Steel Coil

    welded steel coil end to end

    Correction/The first cut/Welded

    Figuration

    Figuration system

    welding

    Welding/Remove inside and outside burr

    Estaiblishment in diameter

    Air-cooled/Water-cooled/Estaiblishment in diameter/Correction

    Flying saw cut

    Flying saw cut

    Exterior inspection

    Exterior inspection/Marking

    plain ends

    Plain end and bevel end

    hydro test

    Hydraulic test (If mention in order)

    Weighting

    Weighting/Record

  • Raw material inspection

    Raw material inspection

    Saw cutting (punching)

    Saw cutting (punching)

    Rosette and Spigot

    Producing Rosette and Spigot or Incoming Ledger Head Feed 

    Welding Rosette and Spigot

    Welding Rosette and Spigot or Welding Ledger Head

    Marking

    Marking

    Packing

    Packing

    Final examination and Storage

    Final examination and Storage

  • Raw material inspection

    Raw material inspection

    Cut off

    Cut off

    Screw rolling/Inspection

    Screw rolling/Inspection

    U head jack /jack base incoming

    U head jack /jack base incoming

    Welding

    Welding

    Marking

    Marking

    Packing

    Packing

    Final examination&Storage

    Final examination&Storage

Visit Our Testing Equipment

In order to ensure the quality, we have a lot of professional testing equipment to ensure the product quality of each process
Youfa lab

Chemical Composition

Youfa lab test equipment

Impact Test

Youfa lab Mechanical Capability Test

Mechanical Capability Test

Inspection Flow Chart

Meticulous inspection steps to ensure the quality and quantity of our products
  • 01

    Charging/Unpacking

    02

    Pickling

    03

    Washing

    04

    Solvent/Drying

    05

    Hot dipped galvanizing

    06

    Air cooling/Water Cooling

    07

    Passivation/Drying

    08

    Marking

    09

    Product examination

    10

    Zinc layer thickness inspection

    11

    Physical and chemical test

    12

    Final examination

  • 01

    Raw material inspection

    02

    Cutting inspection

    03

    Charging inspection

    04

    Welding inspection

    05

    Visual inspection

    06

    Repair pipe inspection

    07

    Finished examination

  • 01

    Raw material inspection

    02

    Welding(Metallographic examination)

    03

    Outer diameter and length inspection

    04

    Flattening test

    05

    Sampling

    06

    Physical and chemical test

    07

    NDT(nondestructive testing)

    08

    Marking

    09

    Final Examination

  • 01

    Raw material inspection

    02

    Pickling  inspection

    03

    Hot Dipped Galvanizing inspection

    04

    Sprinkling Passivation inspectiion

    05

    Marking inspection

    06

    Packing inspection

    07

    Final examination

Youfa: Leading the Steel Pipe Manufacturing Industry

Youfa is confident in the quality and service life of custom steel pipes. Contact us now to get free sample service for you.

500

China's top 500 enterprises

23+

years of manufacturing factory

20million

Tons
Annual production capacity

100+

Exporting country

Certifications You Can Trust

As one of the leading steel pipe manufacturers in China, we set higher standards as the standard. You can have full confidence in our products and services.
LRQA
LR
CQM
CNAS
BSI
SNI
CCS
API
FM
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