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Changzhou Chengxin Metal Products Co., Ltd.
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Seamless Tube Suitable for Honing

Changzhou Chengxin Metal Products Co., Ltd.
Changzhou Chengxin Metal Products Co., Ltd.
City: Changzhou
Province/State: Jiangsu
Country/Region: China
Tel: 86-519-88771678

Seamless Tube Suitable for Honing

Packaging Details : Standard Export Packing
Payment Terms : L/C, T/T
Place of Origin : China
Diameter : 40*4-400*40
Trade Terms : FOB, EXW, CFR, CIF, CIP, CPT, FCA
Production Capacity : 16000m. Tons/Year
Brand Name : Chengxin
Standard : DIN2391-2, EN10305-1
W. T : 4mm-40mm
Min. order : 3 Tons
Main Markets : Global
Morphology : Spare Parts for Hydraulic Cylinder
HS Code : 73049000
Cross-Section Shape : Round
Type : Machinery
Connection Type : Seamless
Category : Primary & Dry Batteries
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1. Commodity: Seamless tube ready for honing
2. Standard&material: EN10305-1 E355, C35E, C45E, 25CrMo4, 42CrMo4,
ASTM A519 SAE1020, SAE1035, SAE1045, SAE1026, SAE4130, SAE4140, DIN2391-2 ST52, ST52.3, ST52.4, etc.
3. Size range: 50mm*40mm-480mm*420mm
4. Manufacture process: Cold-drawn, cold rolled
5. Delivery condition: +C, +LC, +SR, +A, +N.
6. Roughness of internal surface: 0.125um - 4um.
7. Straightness: 0.5mm/1000mm max
8. Tolerance of ID: As per customer's requirement.
9. Tolerance of W. T: +/-5%
10. Packing: Standard export packing
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Material Chemical  composition  requirement 
 C  (%)Si  (%)Mn  (%)P  (%)S  (%)
10#0.07-0.140.17-0.370.35-0.650.030  max0.025  max
20#0.17-0.240.17-0.370.4-0.70.030  max0.025  max
35#0.32-0.390.17-0.370.5-0.80.030  max0.025  max
45#0.42-0.500.17-0.370.5-0.80.030  max0.025  max

MaterialMechanical  properties
 BK  (cold-drawn/hard)BKW(cold-drawn/soft)
 Tensile  strength
Mpa    min
Elongation
%    min
Tensile  strength
Mpa    min
Elongation
%    min
10#410637510
20#51054508
35#59045506
45#64546305
1.   Heat-treating  of  tubes  like  annealing, normalizing, stress-relieving  can  be  negotiated  for  supply.
2.   Tubes  with  other  materials  like  ST52.4  can  be  negotiated  for  supply.

OD 
mm
Allowed  depth  of  internal  imperfection     
 Scratch, indents
OD  ≤   63mm  20um    max
63mm< OD≤ 112mm40um  max
OD> 112mm50um  max

DesignationAllowed  roughness  of  internal  surface 
 abcdef
Nominated  value0.125um0.2um0.4um0.8um1.6um3.2um
1.   Tolerance  can  be  +25%/-0
2.   Roughness  of  internal  surface  of  cold-drawn  seamless  tubes  should  reach  " f" ,   3.2um-4um

I. D 
mm
Size  tolerance  and  its  designation
 H8H9H10
3< I. D≤ 6+18um/-0+30um/-0+48um/-0
6< I. D≤ 10+22um/-0+36um/-0+58um/-0
10< I. D≤ 18+27um/-0+43um/-0+70um/-0
18< I. D≤ 30+33um/-0+52um/-0+84um/-0
30< I. D≤ 50+39um/-0+62um/-0+100um/-0
50< I. D≤ 80+46um/-0+74um/-0+120um/-0
80< I. D≤ 120+54um/-0+87um/-0+140um/-0
120< I. D≤ 180+63um/-0+100um/-0+160um/-0
180< I. D≤ 250+72um/-0+115um/-0+185um/-0

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