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Hot Rolled 4 Inch Stainless Steel Seamless Pipe , Seamless Steel Tube

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  • Brand Name :SISCO
  • Model Number :SIS-P121
  • Place of Origin :China


Hot Rolled 4 Inch Stainless Steel Seamless Pipe , Seamless Steel Tube


Purpose of pickling

Get ride of Oxide layer formed on the surface of the surface;

Passivation of stainless steel surface, giving the steel plate corrosion resistance

Technical Parameter for Seamless Pipe

Tensile Strength


Yield Strength 0.2%

205 - 225

Elongation %

35 - 38

Corrosion test






Eddy Current





Acid wash, annealing


Beveled and Caps


Woven bags

 About 2ton for each bundle


OD Size

6mm - 630mm


0.5mm - 25mm


5 - 5.8m, 6m,double random length




1 oxidation layer characteristics

(1) pipe surface form scale after high temperature hot rolling, formation again after furnace or BAF, formation of oxides can be roughly divided into three layers:

Out layer(Fe2 O3 ﹑ Fe3 O4);

Middle layer(FeO);

Intermediate layer (FeO);

The inner layer (FeO/Cr2O3, or FeO/Cr2O3/NiO), of course, is also critical for acid cleaning between oxide layer and substrate.

(2) there is a great relationship between the structure of Scale and the content of O2 in furnace, and the content of O2 is different from that of scale.


Used in industries as chemical engineering, petroleum, medicine, food, energy, nuclear power, aerospace, 

environmental protection, boiler, gas, war industry, machinery, ship building and so on. 

Competitive Advantage:

Our factory is near to raw material market and high-speed way,  the producing cost is low.

Our factory have long history for producing stainless steel seamless pipe,both producing and testing 

machine is advanced and perfect.

Our factory was certificated by BV/ISO/LR/RINA/CCS/GL/ABS/DNV, which can improve the quality.

We participated in many famous projects with our pipes. 

Stainless Steel Pipe Pickling and Anealing

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  • Hot Rolled 4 Inch Stainless Steel Seamless Pipe , Seamless Steel Tube

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Hot Rolled 4 Inch Stainless Steel Seamless Pipe , Seamless ...

Hot Rolled 4 Inch Stainless Steel Seamless Pipe , Seamless ...

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Shanghai Iron and Steel Co.,Ltd.
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