Jiangsu, China
Business Range:
Auto, Motorcycle Parts & Accessories, Construction & Decoration, Industrial Equipment & ...
Main Products:
Type of Ownership:
Limited Company
Management System Certification:
ISO 9001, ISO 9000
OEM/ODM Service
Sample Available

Seamless Pipe, Seamless Steel Pipe, Steel Pipe manufacturer / supplier in China, offering Hydraulic Cylinder Seamless Precision Steel Tube St52 DIN2391, En10305-1 Cold Drawn Carbon Steel Pipe for Automobile Parts Use, S40c Seamless Steel Tubes /Machine Parts /Auto Parts and so on.

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Supplier Homepage Products Steel Pipe & Tube Hydraulic Cylinder Seamless Precision Steel Tube St52 DIN2391

Hydraulic Cylinder Seamless Precision Steel Tube St52 DIN2391

Min. Order / Reference FOB Price
1 Ton US $400-900/ Ton
Port: Tianjin, China
Production Capacity: 600 Tons Per Month
Payment Terms: L/C, T/T, Western Union, Paypal, Money Gram
Type: Seamless
Technique: Cold Drawn
Material: Carbon Steel
Surface Treatment: Oiled
Usage: Hydraulic/Automobile Pipe, Machinery Industry
Section Shape: Round

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Basic Info.

Model NO.
HTSP
Delivery Condition
Nbk(+N), Gbk(+a), Bk(+C) ,Bkw(
Trademark
HTSP
Transport Package
Hexagon Woven Bags
Specification
40-400MM
Origin
China
HS Code
7304391000
Product Description
Outer diameter: 25mm -500mm 
Wall thickness: 2-50mm
Material: ST52, ST35, ST45
Standard: GB/T8713-88, GB/T3639-2009, DIN2391, EN10305
Honed tubes can be produced according to the demands of costumers that the degree of precision can reach H8/H9. Burnishing and honing service can be provided depending on the roughness requirement of inner diameter.

Material & Chemical Composition
 DIN2391 standard ST52, EN10305 standard E355, 16Mn, ASTM A106B, C20/20#, CK45

 
Product NameSt35 steel pipeSt45 steel pipeSt55  steel pipeSt52 steel pipe
chemical analysisC:≤0.18; P:≤0.05; S:≤0.05C:≤0.25; P:≤0.05; S:≤0.05C≈0.36; P:≤0.05; S:≤0.05C:≤0.20; Si≤0.55;Mn≤1.5;P:≤0.05; S:≤0.05
Tensile Strength+NBK,35-45MPa; +BK,≥45MPa;+BKW,≥38MPa;+GBK,≥32MPa+NBK,45-55MPa; +BK,≥55MPa;+BKW,≥48MPa;+GBK,≥40MPa+NBK,55-65MPa; +BK,≥65MPa; +GBK,≥50MPa+BK,≥60MPa;+BKW,≥55MPa;
Yield strength+NBK,≥24M
Pa
+NBK,≥26MPa+NBK,≥30MPa-
StandardDIN2391-1
LengthAs customer's request
PackagingStandard export packing, packed in woven bags, with two nylon slings, or can be customized as request
Heat Treatment/      Delivery ConditionCold finished (hard)   BK(+C)
Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation
Cold finished (soft)    BKW(+LC)
The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding)
Cold finished and stress-relieved annealing BKS(+SR)
Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.
Annealed    GBK(+A)
The last Cold forming process is followed by annealing in a controlled atmosphere.
Normalized   NBK(+N)
The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.
Delivery TimeWithin 35-50 days from receiving deposit
Payment Term100% L/C at sight or 30% deposit, 70% balance against copy of B/L
Usage/ApplicationPipes for automobile and motorcycle
Main MarketAsia, Middle East, Europe, etc.


Dimension tolerance
Inner Dia (mm)ID Tolerance (mm)WT Tolerance (mm)
H7H8H9H10H11
30+0.021/0+0.038/0+0.052/0+0.084/0+0.130/0±5-10%                      
>30-50+0.025/0+0.039/0+0.062/0+0.100/0+0.160/0
>50-80+0.030/0+0.046/0+0.074/0+0.120/0+0.190/0
>80-120+0.035/0+0.054/0+0.087/0+0.140/0+0.220/0
>120-180+0.040/0+0.063/0+0.100/0+0.160/0+0.250/0
>180-250+0.046/0+0.072/0+0.115/0+0.185/0+0.290/0
>250-315+0.052/0+0.081/0+0.130/0+0.210/0+0.320/0
>315-400+0.057/0+0.089/0+0.140/0+0.230/0+0.360/0

Product description
Processing FormI. DLengthStraightnessI. D ToleranceI. D Rounghness
Cold-rolled30-100≤ 12M0.3-1.0H8-H100.4-1.6
Cold-drawn30-250≤ 12M0.3-1.0 0.8-1.6
Hone40-500≤ 12M1000H8-H90.4-0.8
SRB40-400≤ 7M1000H8-H90.1-0.4

Hydraulic Cylinder Seamless Precision Steel Tube St52 DIN2391
Cold Drawing Process

Hydraulic Cylinder Seamless Precision Steel Tube St52 DIN2391

Honing Process

Hydraulic Cylinder Seamless Precision Steel Tube St52 DIN2391


Skiving Process

Hydraulic Cylinder Seamless Precision Steel Tube St52 DIN2391


 

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