904l Stainless Steel Seamless Pipe in Wuxi ,China

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Loading Port:
Shanghai
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TT OR LC
Min Order Qty:
3 m.t.
Supply Capability:
25000 m.t./month

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Item specifice:

Standard: ASTM Technique: Cold Rolled Shape: Round
Surface Treatment: Polished Steel Grade: 300 Series Certification: SGS
Thickness: 2 Length: 50.1 Net Weight: 25

Product Description:

 

904L STAINESS STEEL

UNSN08904

DIN W.NR.1.4539

 

(Introduction of Commodity)

Similar Grade

UNS

ASTM A240

Trademark

UNS N08904

SUS890L

904L

 

 (Chemical Component)

Alloy

%

Ni

Cr

Cu

Mo

C

Mn

Fe

Si

P

S

904L

Min

23

19

1

4

Balance

Max

28

23

2

5.0

2

1

Balance

0.045

0.035

 

(Physical Properties)

 Density

   Fusion Point

8.0g/cm3

1300-1390°C

 

Mechanical Property

  Alloy and state

 Tensile Strength

 Yield Strength

 Elongation

RM N/MM2

RP0.2N/MM2

A5%

904L

490

216

35

 

904L is a fully austenitic structure, and the general content of high molybdenum austenitic stainless steel, 904L is not sensitive to the precipitation of the ferrite and the alpha phase.

 

Application

 

1. petroleum, petrochemical equipment, such as petrochemical equipment in the reactor, etc..

 

2. Storage and transportation equipment, such as heat exchangers, etc..

 

3. Power plant flue gas desulfurization device, the main use of the site are: absorption tower body,           flue, file door, interior, spray system, etc..

 

4. Organic acid treatment system of scrubber and fan.

 

5. Seawater treatment plant, sea water heat exchanger, paper industry equipment, sulfuric acid, nitric     acid equipment, acid, pharmaceutical industry and other chemical equipment, pressure vessels,         food equipment.

 

6 .Pharmaceutical factory: centrifuge, reactor, etc..

 

7. Plant food: cans of soy sauce, cooking wine, salt, and dressing equipment.

 

8.  Most suitable for dilute sulfuric acid and strong corrosive medium

 

Surface Finish :

Surface finish

Characteristics and application                                                                        

No.2B

The surface brightness and flatness of no2B is better than no2D. 

then through a special surface treatment to improve its mechanical properties,

No2B could nearly satisfy comprehensive uses.

No.3

Polished with abrasive belt of git#100-#200, have better brightness with 

discontinuous coarse stria, used as inner and external ornaments for building, 

electrical appliances and kitchen utensils etc.

No.4

Polished with abrasive belt of grit #150-#180,have better brightness

 with discontinuous coarse stria, but thinner than No3, are used as bathtub

 buildings inner and external ornaments electrical appliances kitchen

 utensils and food processing equipment etc.

HL

Polished with abrasive belt of grit #150-#320 on the NO.4 finish and has 

continuous streaks, mainly used as buildings ornaments elevators, 

door of building, frontal plate etc.

BA

Cold rolled, bright annealed and skin-passed, 

the product have excellent brightness and good reflexivity like mirror,

 kitchen apparatus, ornament etc.

8K

The product have excellent brightness and prefer reflexivity can to be the mirror.

 

904l Stainless Steel Seamless Pipe in Wuxi ,China

904l Stainless Steel Seamless Pipe in Wuxi ,China

 

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Q:What's the difference between stainless steel 304 and stainless steel 202?
Different chemical composition. 304 of the nickel is much higher than 202.
Q:How can I clean the stainless steel tube?
1, cleaning stainless steel gently method is simply to use hot water and clean soft cloth to wipe the surface, and then use dry metal with other soft cloth, to prevent water stains thoroughly.2, if ordinary water leaves some dirt or grease, you can add a mild detergent water.
Q:Stainless steel pipe is mainly used in what areas?
According to the use of stainless steel pipe can be divided into oil well pipe (casing, tubing and drill pipe etc.), line pipe, boiler tube, mechanical structure, hydraulic prop pipe pipe, cylinder pipe, geological pipe, chemical pipe (high pressure fertilizer pipe, oil cracking tube) and shipbuilding pipe etc..
Q:What is stainless steel decorative tube? What uses does it have?
For the steel to withstand the pressure to the hydraulic test to test its ability and quality, leakage, soaked or expansion for qualified does not occur at the prescribed pressure, some steel according to the requirement of standard or edge test, flaring test and flattening test.Seamless stainless steel tube, also called stainless steel seamless pipe, is made of ingot or solid tube blank by piercing, and then made by hot rolling, cold rolling or cold casting. Specifications for seamless steel tubes are expressed in millimeters of outer diameter * wall thickness.
Q:Mechanical properties of stainless steel tubes
Strength (tensile strength, yield strength) the strength of stainless steel is determined by various factors, but the most important and basic factor is the addition of different chemical factors, mainly metallic elements. Different types of stainless steel have different strength characteristics due to their differences in chemical composition.
Q:In stainless steel tubes, why are there some SS in the back and some standard L, such as 316L and 316SS? What's the difference?
There is no essential difference between 316SS and 316L, the same as austenitic stainless steel, and SS means stainless steel.316SS and 316L stainless steels are made of Mo stainless steel. The total performance of this steel is better than that of 310 and 304 stainless steel. Under high temperature, 316 stainless steel is widely used when the concentration of sulfuric acid is below 15% and higher than 85%. 316 stainless steel also has good chloride corrosion resistance, so it is often used in marine environments.
Q:Stainless steel pipe welding interface leakage, how can we not leak?
Welding process should be completely observed, especially between layers, and each layer shall be welded until the temperature is controlled;
Q:How about stainless steel 2520 and 316?
Their nickel content is different. 2520 contains about 20 nickel, 316 contains about 13 nickel, and contains 2 molybdenum.
Q:What is the welding of stainless steel?
Many welding methods, commonly used argon arc welding, less thermal stress, less molten metal elements, forming beautiful; the remaining manual arc welding, higher requirements can be used when laser welding
Q:What is the difference between stainless steel seamless tube and stainless steel welded pipe?
Stainless steel welded pipe is also a hollow section of steel, but it is welded through the plate into the steel pipe, so there is a welded steel pipe welding gap.

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