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

Steel Pipe, Seamless Steel Pipe, Hydraulic Cylinder manufacturer / supplier in China, offering Seamless Steel Honed/Honing Tube St52 DIN2391 for Hydraulic Cylinder, 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 Seamless Steel Honed/Honing Tube St52 DIN2391 for Hydraulic Cylinder

Seamless Steel Honed/Honing Tube St52 DIN2391 for Hydraulic Cylinder

Min. Order / Reference FOB Price
3 Tons US $950-1,500/ Ton
Port: Shanghai, China
Production Capacity: 1000 Tons Per Month
Payment Terms: L/C, T/T, Money Gram
Type: Seamless
Technique: Cold Drawn
Material: Carbon Steel
Surface Treatment: Oiled
Usage: Boiler Pipe, Hydraulic/Automobile Pipe, Machinery Industry, Construction & Decoration
Section Shape: Round

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Basic Info.

Model NO.
HTSP
Steel Grade
St35/45/55/52/35.2/45.2/55.2/52.2
Certificate
ISO, BV
Heat Treatment
+C +LC +Sr +a +N
Capacity
1000t/Month
Delivery Time
30-45days
Length
Customized
Wall Thickness
0.5-20mm
Trademark
HTSP
Transport Package
Hexagon Woven Bags
Specification
30-400MM
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

Seamless Steel Honed/Honing Tube St52 DIN2391 for Hydraulic Cylinder

Seamless Steel Honed/Honing Tube St52 DIN2391 for Hydraulic Cylinder
Cold Drawing Process

Seamless Steel Honed/Honing Tube St52 DIN2391 for Hydraulic Cylinder

Honing Process

Seamless Steel Honed/Honing Tube St52 DIN2391 for Hydraulic Cylinder


Skiving Process

Seamless Steel Honed/Honing Tube St52 DIN2391 for Hydraulic Cylinder

Ultrasonic Flaw Detection

Seamless Steel Honed/Honing Tube St52 DIN2391 for Hydraulic Cylinder

Packaging

Seamless Steel Honed/Honing Tube St52 DIN2391 for Hydraulic Cylinder

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