+86028-62317553
aisi 4140 steel tube scm440 hydraulic tube 1.7225 hollow bar

Sichuan Liaofu Special Steel Industry Co., Ltd has been in steel area for more than ten years,focus on producing 4140 42crmo4 4130 4135 scm440 25crmo4 1010 1020 1045 seamless steel tube,the branch office started in jiangushu on the business of steel pipes

we strictly carry out the quality system iso9001:2000 standard during production process,

adopts advanced modern production management and quality management, to obtain high quality steel pipe . After acid pickling, cold rolling, cold drawn, and then adopt advanced technology for high temperature heat treatment (NBK status) to produce steel pipes with surface: bright, smooth,  high precision, high polish, both inside and outside wall without oxidation layer, internal and external wall of high precision, mechanical performance fits well in any Angle bending, and can bear high pressure, cold bending deformation, flaring, flattening, tensile and other require ments, our steel tube doesnot burst when cold bending, no cracks, no oxide layer and the internal and external wall, etc.
The precision steel tube is made by seamless steel tube ,which is through non-oxygen tempering treatment to eliminate the surface and internal stress.The product is of high precision and ductility, easy to be processed into various required shapes, and cross section of the tube will not be reduced or flattened.The surfaceis of high presicion, and the surface hardness is moderate and easy to be connected. The inner hole and surface are treated with phosphating anti-rust treatment without acid cleaning and rust removal.
The company covers an area of more than 8000 square meters with an annual output of more than 5,000 tons.The main products are: cold drawing or cold rolling precision seamless steel pipe and related supporting bright tubing, conveying fluid seamless steel pipe.Our company produce seamless steel pipe in Europe (Germany) DIN series standard is the basic standard, using high quality tube blank, on the basis of this combined with our unique steel pipe manufacturing process,.Steel pipe is produced in high precision and high cold drawn.Because of the special bright heat treatment process, the inner and outer walls of steel tube are not oxidized after heat treatment.

best sae 4140 steel tube 1.7225 machined tube,

4140 Hexagon Cold drawn Shaped Steel Tube 

4140 Steel Roller,we can produce Machined Part according to drawings

Standards:ASTM,JIS,GB,EN(DIN,BS,NF) Or Per as clients requires.

 

 

Product Basic Information:

1.Chemical Composition and Mechanical Properties(In Quenched & Tempered State):

 

Material

4140

Chemical Composition

Mechanical Properties(In Quenched & Tempered State)

C

0.38-0.45

Tensile strength(MPA) 

1080

Si

0.17-0.37

Yield strength (MPA)

930

Mn

0.50-0.80

Elongation(δ5/%)

12

Cr

0.90-1.20

Reduction in Area (ψ/%)

45

Mo

0.15-0.25

Impact  (J)

63

P

0.035

 

Hardness  

 

217HB

S

0.035

Cu

0.30

Ni

0.30

 

 

2.Product Application Areas:

Our products have been used in all kinds of areas, such as aviation,aerospace,navigation,nuclear energy,chemical industry,

electronic information,achine manufacture, petrochemical, automotive,instrument and meter, Communication ,transportation, and medical instruments, etc.

 

3.Similar steel grade & equivalent steel materials:

USA

Japanese

Gemany

British

France

International

Chinese

ASTM&AISI&SAE

JIS

EN DIN

EN BS

EN NF

ISO

GB

4140

SCM440

42CrMo4

1.7225

42CrMo4

1.7225

42CrMo4

1.7225

------

42CrMo

 

4 we have sold 4140 hot rolled and 4130 cold drawn steel tube before,aslo we can produce machined steel pipe according to drawing,we have sold to Israel,brazil,Portugal and son on,u can check some of the pictures below

4130 steel tube

8201D712C9C5E8FDED3F07CB7E2C45FA6F2E76E743885E0D296C5A6BC46FB293

4140 machined steel pipe

42CRMO02.jpg42CRMO03.jpg4201.jpg

 

1010 1020 1045 5140 30crmnsia steel pipe

10 20.png20.png35.png40CR.png

 

 

Product Sales Information: 

Material

4140 steel tube

Size

outside Diameter:10mm-500mm

Length:500mm-6000mm

Origin place 

Made In China

Delivery Condition

Hot rolled,cold drawn,forged

Surface require

Black,grinding,bright,polish

Heat treatment

Quenched,Tempered,annealed

Packing

seaworthy packing ,wooden case ,carton,woven bag or at client's requires

Delivery time

In 40-50 days

Trade Term

EXW,FOB,CIF

Payments

T/T or L/C at sight

Port

China main Port,such as shanghai,Dalian,Shenzhen port.

MOQ

1 Ton

 

 

Company Main Products:

 

Alloy Steel

4140,4142,42CrMo4,1.7225,SCM440,4130,SCM430,25CrMo4,1.7218,34CrNiMo6,

1.6582,4340,SNCM439,36CrNiMo4,1.6511,SACN645,1340,SMn438,SNC236,

Tool Steel

H13,1.2344,SKD61,D2,SKD11,1.2379,1.2510,01,SKS3,95MnWCr5,D3,SKD1,1.2419,

SKS31,H21,SKD5,1.2581,P20,35CrMo7,1.2738,1.2316,M2

Bearing Steel

GCr15,52100,SUJ1,SUJ2,100Cr6,1.2067,55C,8620,4320,9310,440C,M50

Spring Steel

9260,SUP6,SUP7,1.7108,54SiCr6,1.7102,5155,SUP9,1.7176,5160,1.7177,6150,

SUP10,51CrV4,1.8159

Stainless Steel

321,sus321,1.4541,304,SUS304,1.4301,410,SUS410,1.4006,420,1.4021,1.4028,

434,1.4113,316L,SUS316L,1.4435,630,1.4542,431,1.4057,

 

 

 

 

Certifications:

initpintu_.jpg

 

 

 

 Factory Manufacture Process:

 

1.Forged Ingot

1.jpg

 

 2.Material Taking Machine

2.jpg

 

 3.Forged Machine

3.jpg

 

 4.Sawing Machine

4.jpg

 

+86028-62317553