How galvanized steel pipe is galvanized

- Dec 17, 2020-

The main difference between different hot-dip galvanizing methods is how to activate the surface of the tube after acid leaching to improve the quality of galvanizing. Dry and redox methods are mainly used in production, and their characteristics are shown in the table. Galvanized steel pipes can be classified into hot-dip galvanizing and electro-galvanizing. Hot-dip galvanizing includes wet, dry, lead-zinc and redox processes. 

The galvanized steel pipe has a galvanized surface that is smooth, compact and uniform in structure. Has good mechanical properties and corrosion resistance. The consumption of zinc is 60%-75% lower than that of hot-dip galvanized steel. The galvanizing process is more complicated, but it must be used for single-sided coatings, double-sided coatings of different thicknesses on the inner and outer surfaces, and thin-walled tubes. 

Advantages of galvanized steel pipe: good temperature and pressure resistance, wide application range; good rigidity, suitable for open clothing; easy access to raw materials, co.

Product Description                                             


ASTM A106, ASTM A53, API 5L Gr.B, DIN17175,DIN1629


ASTM A106B, ASTM A53B, API 5L Gr.B,ST52, ST37,ST44


Outer diameter


Wall thickness



3m-12m, random or fixed, as the clients' requests


Hot Rolled


Control with in the standard, OD:+/-1%, WT:+/-5%



1.Short delivery time

2.Quality assurance

3.Competitive price

4.Free Sample

Products Show                                                     

ASTM A53 Grade B Hot Rolled Seamless Steel Pipe

     ASTM A53 Hot Rolled Seamless Pipes                                 Hot Rolled Carbon Steel Seamless Pipes


Seamless Steel Pipe,as the name suggests,is a pipe without a seam or a weld-joint.

Seamless Steel Pipes is a tubular section or hollow cylinder,usually but not necessarily of

circular cross-section,used mainly to convey substances which can flow-liquids and gases(fluids),slurries,powders,powders and masses of small solids.


ASTM A53 Grade B Hot Rolled Seamless Steel Pipe

   ASTM A106 Hot Rolled Seamless Pipes                     JIS G3444 STKM12B Hot Rolled Seamless Pipes  


The production of our seamless steel pipes is tightly regulated and all of the pipes we produced

have been fuly tested to international standards to ensure we only supply the hightest products.


ASTM A53 Grade B Hot Rolled Seamless Steel Pipe

               Black Painting Hot Rolled Seamless Steel Pipes As Per ASTM A106/A53 Gr.B

Seamless Steel Pipes WITH black painting,beveled ends and plastic caps,mainly used in convey petroleum,gas and other liquid.The black painting can protect pipes out of rust and corrosion.

The beveled ends can connect the pipes with flange.



Packing & Delivery                                                

Bare Pipes in Container                           Cutted Pipes in Wooden Box              Black Painting Pipes

Packaging & Delivery
Packaging Details:
1. Small OD: In hexagonal bundle with steel strips 
2. Large OD: In bulk 
3. Wrapped in waterproof plastic woven bag 
4. Filled in wooden cases

5. As required
Delivery Detail:Shipped in 7-15 days after payment


Inspect Products                                                 

ASTM A53 Grade B Hot Rolled Seamless Steel Pipe

Application of Products                                       

ASTM A53 Grade B Hot Rolled Seamless Steel Pipe

Our Factory                                                         

ASTM A53 Grade B Hot Rolled Seamless Steel Pipe

        Heating Round Bar(Raw Material)                                    Punching Machine

ASTM A53 Grade B Hot Rolled Seamless Steel Pipe

      Hot Rolled Line                                                                    Finished Pipes


Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.

No.92 JieFang East Road ,Cangzhou City, Hebei,P.R.China.

CSPG  has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation. 

We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel spiral pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.


Now we have 2 Hot Rolled Produce Line and 10 Sets Cold Rolled Machines.The yield of our factory is about 30,000.00TONS(20,000.00 tons hot rolled pipes & 10,000.00 tons cold rolled pipes).


Our pipes had export to Ecuador,Argentina,Canada,Russia,Turkey,Thailand,Pakistan,Korea and India markets.

Our chairman Mr. Zhang Xiyin warmly welcome you to visit our company and hope to establish a long business relationship with you and your company.

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