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Standard Precision Seamless Steel Tubes

--Precise custom outer diameter and inner diameter --Tight tolerances, resulting in reduced machine time / Dimensional accuracy --Smooth and Clean OD and ID surfaces --Excellent machining characteristics --Wider range of physical properties attainable through process and annealing options
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  • Seamless Steel Tube

  • Tenjan

  • Seamless Steel Tube

1.Product Description /Specifications

Production Range

Outer Diameter：10-120mm (0.4 inch - 4.7 inch)

Wall Thickness：1-20mm (0.04 inch - 0.78 inch)

Material / Grade

Carbon Steel：

GB/T 8162 & 8163 & 3639: 10#, 20#, 35#, 45#, 55#, Q235B, Q235C, CF53, A105

ASTM A519: 1010, 1020, 1026, 1035, 1045, 1050

DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: C10/CK10, C22/CK22, C35/CK35, C45/CK45, CF53

JIS3441/JIS3444/JIS3445: STKM11A, STKM12A/STKM12B/STKM12C, STKM13A/STKM13B/STKM13C

JIS G4051: S10C, S20C, S25C, S35C, S45C, S55C

Alloy Steel：

GB/T 8162 & 8163 & 3639: 16Mn(Q345B), 20Cr, 40Cr, 15CrMo, 20CrMo, 28CrMo, 30CrMo, 35CrMo, 42CrMo, 20CrMnTi, 40MnMoV, 20Mn2, ZF6, 16MnCr5, 20MnCr5, 38Mn2V, 09CrCuSb(ND)

ASTM A519: 5120, 5140, 4130, 4135, 4140

DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: ST52, EN10084-1998 20Cr4, 41Cr4, 15CrMo4, 25CrMo4, 35CrMo4, 42CrMo4, 16MnCr5

JIS3441/JIS3444/JIS3445: SCM432/SCRRM3, SCM4

JIS G4053: JIS SCr420, JIS SCr440, SCM415, SCM420

Tolerance

Tolerance ±0.15mm，Superior products ±0.05mm, Can be customized according to customer’s requirements

Technique

Cold Drawn / Cold Rolled

Shape

Round

Further Processing for Steel Tubes

Final Annealing, Cutting, Chamfer, Threading, Inner diameter or Outer Diameter Lathe, Surface Shot Blasting, Laser Marking

        


2. Product Photos

cold drawn steel tube 

Cold Drawn Steel Tube

cold rolled steel tubes 

Cold Rolled Steel Tube

 cold drawn and rolled steel tubes

Cold Drawn VS Cold Rolled Steel Tubes


3. Cold Drawn VS Cold Rolled Technics

Cold Drawing 

Cold Drawing

1. Through special alloy steel mould cold drawn forming

2. Small deformation

3. Inside and outside surface bright and clean

4. Hardness moderate

5. Suitable for machining

6. Special shape tube necessary procedure

 

 

Cold Rolling 

Cold Rolling

1. Through the roller repeatedly rolling the outer surface forming

2. Large deformation

3. Outer surface bright with a mirror effect

4. High hardness

5. Suitable for terminal products

6. High surface requirement tube necessary procedure



Combination of Cold Drawing and Cold Rolling

1. High-end products adopt the combination mode of cold drawn and cold rolled.

2. Suitable for subsequent machining

3. Perfect surface

Examples: rifle barrel, shock absorber

 

 

4. Application

Auto Parts Driling Engineering Machinery
Auto Parts    Drilling  Engineering Machinery
Machining Tunnel Support Agricultural Machinery Parts
Machining Tunnel Support Agricultural Machinery Parts
Liquid Conveyance Transmission
Liquid Conveyance Transmission 


5. International Steel Grade Table

International Steel Grade Table

China

 ASTM A519

DIN

JIS 3445

JIS G4051

 俄罗斯гOCT4543-71

Carbon Steel

10#

1010

DC01(1.0330) DC03(1.0347)

STKM11A

S10C

 10
15# 1015 C15C(1.0234)
S15C 15

20#

1020

C20C(1.0411)

STKM12A/STKM12B/      STKM12C

S20C

 20

25#

1025

 C25(1.0406)

STKM13A/STKM13B/ STKM13C

S25C

 25
30# 1030
 C30(1.0528)
S30C 30

35#

1035

C35(1.0501)

S35C

 35
40# 1040 C40(1.0511)
S40C 40

45#

1045

C45(1.0503)

S45C

 45
50# 1050 C50(1.0540)
S50C 50

55#

 1055 C55(1.0535)

S55C

 55
60# 1060 C60(1.0601)
S58C 60
65# 1065 C66D(1.0612)
 SWRH67B
65
70# 1070 C70D(1.0615) SWRH72A  SWRH72B
70
75# 1075 C76D(1.0614) SWRH77A  SWRH77B
75
80# 1080 C80D(1.0622) SWRH82A  SWRH82B
80
85# 1084 D86D(1.0616) SWRH82A  SWRH82B
85

CF53

1050

CF53


Q345A Grade 50[345] E3359(1.0060) SPFC 590
345
Q345B S355JR(1.0045)
Q345C S355JO(1.0553)
Q345D S355J2(1.0577)
Q345E S355NL(1.0546)
Q390A Grade 55[380] STKT 540

390
Q390B

Q390C

Q390D /

Q390E

Q420A Grade 60[415] S420NL(1.8912)    S420ML(1.8836)
 SEV 295

Q420B

Q420C

Q420D

Q420E

Q460C Grade 65[450] S460NL(1.8903)    S460ML(1.8838) SM570

Q460D SMA570W

Q460E SMA570P

Q235A Grade D/Grade33[230]
SS400
СтЗKП

Q235B

 Grade D/Grade33[230]

СтЗKП

Q235C

 Grade D/Grade33[230]

СтЗСП
Q235D Grade D/Grade33[230]

СтЗСП
Q275 SS Grade40[275]
 S275JR(1.0044)  S275JO(1.0143)   S275J2(1.0145) SS490
Ст5ПС      Ст5СП
15Mn 1016
SWRCH16K
15Γ
15MnA

15ΓΑ
15MnE

15ΓШ
65Mn 1566
SWRH67B
65Γ
65MnA

65ΓΑ

65MnE









Alloy Steel

16Mn(Q345B）

St52


20Cr

5120

20Cr4 (EN 10084-1998)

JIS SCr420( JIS G4053)

40Cr

5140

41Cr4(1.7035)

JIS SCr440( JIS G4053)

15CrMo

15CrMo4

SCM415 (JIS 4053)

20CrMo

25CrMo4(1.7218)

SCM420 (JIS 4053)

28CrMo




30CrMo

4130



35CrMo

4135

35CrMo4(1.7220)

SCM432/SCRRM3

42CrMo

4140

42CrMo4(1.7225)

SCM4

20CrMnTi




40MnMoV




20Mn2

 1524 P355GH(1.0473)
SMn420
30Mn2 1330 28Mn6(1.1170)
SMn433 30г2
35Mn2 1335

SMn438 35г2
40Mn2 1340

SMn438 40г2
45Mn2 1345

SMnC443 45г2
50Mn2



50г2
40B 1040 38B2(1.5515)


45B 1045



50B 1050



40MnB 1541 37MnB5(1.5538)


45MnB 1547



15Cr 5115 17Cr3(1.7016)
SCr415 15X
15CrA 5115 17Cr3(1.7016)
SCr415 15XA
20Cr 5120 17Cr3(1.7016)
SCr420 20X
30Cr 5130 28Cr4(1.7030)
SCr430 30X
35Cr 5135 34Cr4(1.7033)
SCr435 35X
40Cr 5140 41Cr4(1.7035)
SCr440 40X
45Cr 5145

SCr445 45X
50Cr 5150


50X
38CrSi



38XC
15CrMo
18CrMo4(1.7243)
SCM415 15XM
20CrMo 4118 18CrMo4(1.7243)
SCM420 20XM
30CrMo 4130 25CrMo4(1.7218)
SCM430 30XM
30CrMoA 4130 25CrMo4(1.7218)
SCM430 30XMA
35CrMo 4135 34CrMo4(1.7220)
SCM435 35XM
35CrMoV 4135 34CrMo4(1.7220)
SCM435 40XMφA
42CrMo 4142 42CrMo4(1.7225)
SCM440

ZF6

16MnCr5(1.7131)


16MnCr5




20MnCr5




38Mn2V




36Mn2V




09CrCuSb(ND钢)











Steel Tube Standard

Seamless Steel Tubes for Structural Purposes   

GB/T 8162-2018

ASTM A519

DIN17121/EN 10297-1

JIS3441/JIS3444/JIS3445

Seamless Steel Pipes for Liquid Service   GB/T 8163-2018

ASTM A106



Seamless Cold-drawn or Cold-rolled Steel Tubes for Precision Applications

 GB/T 3639-2009

DIN1629/DIN2391/ EN 10305-1


Cold Drawn Shaped Steel Tubes

GB/T 3094-2012

ASTM A500 / ASME SA500



Seamless Steel Tubes for Automobile Stabilizer Bar

GB/T 33821-2017




Rebar Coupler Standard

Couplers for Rebar Mechanical Splicing

JG/T 163-2013




 



Our Certificate：

ISO9001 IATF16949
ISO 9001  IATF 16949


                                                                                                 

Why Choose Tenjan?

(1) Large Scale Production，Strong R&D Capability

The annual production capacity can reach 60,000 tons under years of development. Every-year R&D investment and a team of technicians enable Tenjan with strong R&D capability. Tenjan has full system of production with advanced equipment, such as perforation, pickling, cold rolling, cold drawing, straightening, flaw detection, tensile test and machining.

 

(2) Quality Control 

Every batch of products can be traced and guaranteed by the raw material certificate and steel tube quality certificate. Complete quality control system, following ISO9001, to ensure a full inspection process such as pull force test, chemical composition test and eddy current detection.

 

(3) Certification

The chairman of Tenjan, Mr. Wensheng Gu, is one of the major constitutors of national standard Couplers for Rebar Mechanical Splicing JG/T 163-2013. And Tenjan has won the Quality System Certificates of ISO9001 and IATF16949.

 

(4) Major Customer Case

We have long-term relationship with customers such as BMW, MCC, CNNP, CRRC, Midea, Sinohydro, China Pingmei, China Academy of Building Research and so on.

 

(5) Export Countries

Our products were exported to Europe, America, Japan, South Korea, The Middle East, Southeast Asia and in total six continents over 20 countries, and which has been consistently trusted by customers.

 

(6) Customer Service

Tenjan provides considerate service to every customer with fast feedback, quality track and technical support.  


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