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Changzhou Hongtai Precision Steel Pipe Co., Ltd.

Steel Pipe, Seamless Steel Tube, Honed Tube manufacturer / supplier in China, offering DIN2391 Honed Seamless Steel Pipe for Hydraulic Cylinder, JIS G3445 Cold Drawn Steel Pipe for Automobile and Motorcycle, En10305-1 Shock Absorber Precision Seamless Steel Pipe for Boiler and so on.

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Supplier Homepage Product Cylinder Tube DIN2391 Honed Seamless Steel Pipe for Hydraulic Cylinder

DIN2391 Honed Seamless Steel Pipe for Hydraulic Cylinder

FOB Price: US $400-1,000 / Ton
Min. Order: 1 Ton
Min. Order FOB Price
1 Ton US $400-1,000/ Ton
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Port: Shanghai, China
Production Capacity: 600 Tons Per Month
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: DIN 2391
  • Technique: Cold Drawn
  • Surface Treatment: Oiled
  • Section Shape: Round
  • Certificate: Ts16949
  • Outer Diameter: 6mm-325mm
  • Trademark: HTSP
  • Specification: 6-325MM
  • HS Code: 7304391000
  • Type: Seamless
  • Material: Carbon Steel
  • Usage: Hydraulic/Automobile Pipe, Machinery Industry, Construction & Decoration
  • Steel Grade: St52; Ck20; Ck45; E355
  • Heat Treatment: +C +LC +Sr +a
  • Thickness: 3-36mm
  • Transport Package: Hexagon Woven Bags
  • Origin: China
Product Description
Changzhou Hongtai Precision Steel Pipe Co., Ltd produces auotomobile and motorcycle precision steel pipes, oil cylinder precision steel pipes, honing precision steel pipes and SSAW pipes. The steel pipes also can be treated with anticorrosion and heat preservation as per customers' requirement.

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


DIN2391 Honed Seamless Steel Pipe for Hydraulic Cylinder









Material Composition
 
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



 
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