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Changzhou Hongtai Precision Steel Pipe Co., Ltd.

Steel Pipe, Seamless Steel Pipe, Hydraulic Cylinder manufacturer / supplier in China, offering Honed/Honing St52 DIN2391 Smls Steel Pipe for Cylinder Tube, En10305-1 Shock Absorber Precision Steel Pipe, Cold Drawn Precision Seamless Steel Tube/Pipe En10305 DIN2391 JIS G3441 and so on.

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Supplier Homepage Product Cylinder Tube Honed/Honing St52 DIN2391 Smls Steel Pipe for Cylinder Tube

Honed/Honing St52 DIN2391 Smls Steel Pipe for Cylinder Tube

FOB Price: US $400-1,300 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $400-1,300/ Piece
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Port: Tianjin, China
Production Capacity: 600 Tons Per Month
Payment Terms: L/C, T/T, Paypal, Money Gram

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Basic Info
  • Model NO.: HTSP
  • Technique: Cold Drawn
  • Surface Treatment: Oiled
  • Section Shape: Square
  • Certificate: Ts16949
  • Trademark: HTSP
  • Specification: 6-68MM
  • HS Code: 7304391000
  • Type: Seamless
  • Material: Carbon Steel
  • Usage: Boiler Pipe, Hydraulic/Automobile Pipe, Machinery Industry, Construction & Decoration
  • Steel Grade: St52; Ck20; Ck45; E355
  • Heat Treatment: +C +LC +Sr +a +N
  • Transport Package: Hexagon Woven Bags
  • Origin: China
Product Description
Changzhou Hongtai Precision Steel Pipe Co., Ltd belongs to Zhengzhou Hongtai Steel Pipe Group, specializing in international trading of steel pipes.Hongtai Group has 5 subsidiaries: Changzhou Hongtai Precision Steel Pry Co., Ltd, Zhengzhou Wantong Hongtai Steel Pipe Co., Ltd and Zhengzhou Huatong Steel Pipe Co., Ltd. We are the primary agent of Linzhou Fengbao Pipe Industry Co., Ltd.,Hubei Xinyegang Steel Co.,Ltd.,Baogang Group, TPCO. We also produce 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
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
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