904l Stainless Steel Seamless Pipe in Wuxi ,China

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Loading Port:
Shanghai
Payment Terms:
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:How much more expensive is 304 stainless steel than 201?
201 in the stainless steel industry, represents a kind of material, 201 stainless steel is generally refers to 201 stainless steel and acid resistant steel floorboard. 201 stainless steel refers to the atmosphere, steam, water and other weak medium corrosion of steel, while acid resistant steel refers to acid, alkali, salt and other chemical corrosive medium corrosion of steel.
Q:Are stainless steel tubes and galvanized steel tubes the same?
Galvanized steel pipe is common steel pipe, and then the surface coated with a layer of zinc coating, in order to prevent rust, as long as the surface layer is ground, it will rust.
Q:Stainless steel works. What saw can be sawed off?
Large quantity resin grinding wheel cutter. A small number of saw blade saw frame quickly is also very labor-saving. Saw blade with fine teeth. The middle teeth and coarse teeth are not suitable, easy to clamp teeth broken teeth.
Q:304 stainless steel, welded to seamless difference in what place?
The grain size of the metal is related to the temperature of heat treatment and the time of keeping the same temperature. The welded stainless steel pipe and seamless stainless steel tube as the annealed grain size. If the minimum tube cold treatment, the grain size of the weld metal is smaller than the grain size, welding or grain size is the same.
Q:How can the stainless steel tube eliminate stress?
Or artificial stress, method: stresses both ends of the steel pipe fixed by the mold, through high-frequency shocks, so that the internal stress relief of the steel pipe
Q:SA-179 what kind of material is steel pipe?
Compared withsteel and roundsteelinsolid, flexural torsional strength in the same time, the weight is light, is a kind of economic section steel, widely used in the manufacture of structural parts and mechanical parts, such as the oil pipe, automobile transmission shaft, the bicycle frame and steel construction with scaffold with steel pipe manufacturing ring parts can be improved the utilization rate of materials, simplify the manufacturing process, material saving and working hours, has been widely used to manufacture steel tube.
Q:How can galvanized steel pipe to be connected with stainless steel pipe?
The method of non direct fusion is adopted, such as blue, silk head and movable joint.
Q:What's the difference between cold drawn steel tube and hot rolled steel tube?
Hot rolling is relative to cold rolling, cold rolling is performed under recrystallization temperature, while hot rolling is rolling above recrystallization temperature.Seamless steel pipe, hot-rolled and cold-rolled (DIAL) seamless steel pipe two categories.Hot rolled steel tubes are divided into ordinary steel tubes, low and medium pressure boiler tubes, high pressure boiler tubes, alloy steel pipes, stainless steel pipes, oil cracking pipes, geological steel pipes and other steel pipes, etc..
Q:How can stainless steel and copper pipe be welded?
Prepare a brass wire cleaning flux of base metal 3/4 stainless steel tube 5/8 copper rust (specific parent material specification is not clear to me) welding tools
Q:Are stainless steel pipelines buried in need of corrosion protection?
In the aqueous medium such as Cl-, the localized destruction of the passive film due to acidification of the dielectric solution in the crevice (increasing of Cl- concentration, decrease in pH value) and hypoxia (oxygen concentration cell, gap hypoxia). The most fundamental is to eliminate the gap from the structure is designed to avoid the gap of the heat exchanger tube is connected with the gap at the gap on the tube plate, flange, gaskets, bolts, rivets, to take appropriate measures to prevent.

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