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  • Seamlss Honed steel pipe

    Hydraulic Cylinder Honed Tube
    Steel grade: ST52.3, 1020, CK45, 4140 , E355,4130, Stainless Steel 304/316, Duplex 2205, Alloy Steel etc.
    ID: 20mm-1500mm
    Length: max 16m
    Straightness: 0.5/1000
    Roughness(Ra): 0.2-0.4um
    Tolerance EXT:DIN2391,DIN17175,DIN1629,ASTM519,ASTMA106,JISG3441,GB/T8163,GB/T3639,GB9948,GB/T5312 etc.
    Tolerance INT: ISO H8
    Type: cold drawing, cold rolling, honed
    Conservation: anti rust oiled inside and outside surface, plastic caps in both ends
    Package: bundle with steel strip and knitting strip, or wooden case.





    Seamlss Honed steel pipe
  • Description
  • Specification
  • Standard
  • Process
  • Packing
  • Inquiry Online
Description
Hydraulic Cylinder Honed Tube
Steel grade: ST52.3, 1020, CK45, 4140 , E355,4130, Stainless Steel 304/316, Duplex 2205, Alloy Steel etc.
ID: 20mm-1500mm
Length: max 16m
Straightness: 0.5/1000
Roughness(Ra): 0.2-0.4um 
Tolerance EXT:DIN2391,DIN17175,DIN1629,ASTM519,ASTMA106,JISG3441,GB/T8163,GB/T3639,GB9948,GB/T5312 etc.
Tolerance INT: ISO H8
Type: cold drawing, cold rolling, honed
Conservation: anti rust oiled inside and outside surface, plastic caps in both ends
Package: bundle with steel strip and knitting strip, or wooden case.


Honed Tube is a kind of high precision seamless steel pipes,after grinding and rolling process,It integrates the advantages of no oxidation layer on inside surface, no leakage under high pressure, high precision, high finish, no deformation in cold bending, flaring, flattening and no cracks.Widely used in hydraulic cylinder system,fittings of car,boiler equipment and mechanical properties industry

Product Detail
Product Description
For steel products:
(1) seamless carbon steel pipe for oil pressure service st 37.4.
(2) high-carbon anti-friction bearing steel bar/hollow bar suj-2.
(3) induction hardening chromium plate bar sae 1045/jis s45c/din ck45.
(4) seamless steel honed tubes/internal honed with external hard chromium plate tube/internal honed & hard chromium plate tube jis stkm 13c.
For aluminum products:
(1) aluminum alloy tubes for pneumatic cylinder a6063 t5.
(2) aluminum alloy profile tubes for pneumatic cylinder a6063 t5.


For stainless steel products:
(1) stainless steel chrome plate rods/grind rods type sus 303/304/316.
(2) stainless seamless steel honed tubes/extra-thin seamless steel tube sus 304/304l/316/316l.
(3) stainless seamless/welded industrial steel pipes astm a312.
(4) stainless seamless/welded steel sanitary tubing astm a270.
Specification
Size list (IDxOD) mm
20x30            50x65              76.2x88.9        115x130        170x203        175x210
20x40            50.8x60.3        80x90              115x135        180x210        300x377
25x32            50.8x63.5        80x95              120x140        180x220        500x600
25x35            55x65              88.9x101.6      125x145        185x225        600x700
30x40            60x70              90x100            130x150        190x220       1000x1200
30x45            60x75              90x105            130x152         200x220      152.4x168
32x42            63.5x73.5        90x110            135x160         200x235       etc.
35x45            63.5x76.2        95x110            140x160         200x245
38.1x50.8      63x73              95x115            140x165         220x250
40x48            63x76              100x115          140x168         220x255
40x50            65x75              100x120          145x170        195x245
40x55            65x80              100x125          145x175         250x299
40x60            70x80              101.6x114.3    150x175         220x273
45x55            70x85              105x120          150x180         300x351
45x60            70x90              105x125          160x184         280x325
50x58            75x85              110x130          160x190         280x351
50x60            75x90              114.3x127       160x194         320x402
* Note: Special size can be customized.
* Imperial sizes & metric sizes available
* Standard size on stock, MOQ can be 1pc.

Standard
nside Dia (mm) ID Tolerance (mm) WT Tolerance            (mm)  
 
H7 H8 H9 H10  
≤30 +0.021/0 +0.033/0 +0.052/0 +0.084/0 ±7.5%                      
 >210mm ±10% 		 
30 - ≤50 +0.025/0 +0.039/0 +0.062/0 +0.100/0  
50 - ≤80 +0.030/0 +0.046/0 +0.074/0 +0.120/0  
80 - ≤120 +0.035/0 +0.054/0 +0.087/0 +0.140/0  
120 - ≤180 +0.040/0 +0.063/0 +0.100/0 +0.160/0  
180 - ≤250 +0.046/0 +0.072/0 +0.115/0 +0.185/0  
250 - ≤315 +0.052/0 +0.081/0 +0.130/0 +0.210/0  
315 - ≤700 +0.057/0 +0.089/0 +0.140/0 +0.230/0  
 
Steel Grade Chemical composition %
C Si Mn P S Al
≤ ≥
20# 0.17-0.24 0.17-0.37 0.35-0.65 0.035 0.035 /
45# 0.42-0.50 0.17-0.37 0.50-0.80 0.035 0.035 /
Q345B ≤0.2 ≤0.5 1.00-1.60 0.03 0.03 /
Q345D ≤0.2 ≤0.5 1.00-1.60 0.03 0.03 0.015
25Mn 0.22-0.29 0.17-0.37 0.70-1.00 0.035 0.035 /
27SiMn 0.24-0.32 1.10-1.40 1.10-1.40 0.035 0.035 /
ST52 ≤0.22 ≤0.55 ≤1.6 0.025 0.025 /
SAE1026 0.22-0.28 0.15-0.35 0.60-0.90 0.04 0.05 /
 
Delivery Condition cold finished (hard) (BK) cold drawn and stress-relieved (BK+S)  
 
Steel Grade Tensile Strength    (Mpa) Elongation    (%) Tensile Strength    (Mpa) Yield Strength      (Mpa) Elongation          (%)  
 
20# ≥550 ≥8 ≥520 ≥375 ≥15  
45# ≥640 ≥5 ≥600 ≥520 ≥10  
16Mn ≥640 ≥5 ≥600 ≥520 ≥14  
25Mn ≥640 ≥5 ≥600 ≥510 ≥15  
27SiMn ≥800 ≥5 ≥760 ≥610 ≥10  
ST52 ≥640 ≥5 ≥600 ≥520 ≥14  
SAE1026 ≥640 ≥5 ≥600 ≥510 ≥15  
Process
Packing
Specification
Size list (IDxOD) mm
20x30            50x65              76.2x88.9        115x130        170x203        175x210
20x40            50.8x60.3        80x90              115x135        180x210        300x377
25x32            50.8x63.5        80x95              120x140        180x220        500x600
25x35            55x65              88.9x101.6      125x145        185x225        600x700
30x40            60x70              90x100            130x150        190x220       1000x1200
30x45            60x75              90x105            130x152         200x220      152.4x168
32x42            63.5x73.5        90x110            135x160         200x235       etc.
35x45            63.5x76.2        95x110            140x160         200x245
38.1x50.8      63x73              95x115            140x165         220x250
40x48            63x76              100x115          140x168         220x255
40x50            65x75              100x120          145x170        195x245
40x55            65x80              100x125          145x175         250x299
40x60            70x80              101.6x114.3    150x175         220x273
45x55            70x85              105x120          150x180         300x351
45x60            70x90              105x125          160x184         280x325
50x58            75x85              110x130          160x190         280x351
50x60            75x90              114.3x127       160x194         320x402
* Note: Special size can be customized.
* Imperial sizes & metric sizes available
* Standard size on stock, MOQ can be 1pc.

Standard
nside Dia (mm) ID Tolerance (mm) WT Tolerance            (mm)  
 
H7 H8 H9 H10  
≤30 +0.021/0 +0.033/0 +0.052/0 +0.084/0 ±7.5%                      
 >210mm ±10% 		 
30 - ≤50 +0.025/0 +0.039/0 +0.062/0 +0.100/0  
50 - ≤80 +0.030/0 +0.046/0 +0.074/0 +0.120/0  
80 - ≤120 +0.035/0 +0.054/0 +0.087/0 +0.140/0  
120 - ≤180 +0.040/0 +0.063/0 +0.100/0 +0.160/0  
180 - ≤250 +0.046/0 +0.072/0 +0.115/0 +0.185/0  
250 - ≤315 +0.052/0 +0.081/0 +0.130/0 +0.210/0  
315 - ≤700 +0.057/0 +0.089/0 +0.140/0 +0.230/0  
 
Steel Grade Chemical composition %
C Si Mn P S Al
≤ ≥
20# 0.17-0.24 0.17-0.37 0.35-0.65 0.035 0.035 /
45# 0.42-0.50 0.17-0.37 0.50-0.80 0.035 0.035 /
Q345B ≤0.2 ≤0.5 1.00-1.60 0.03 0.03 /
Q345D ≤0.2 ≤0.5 1.00-1.60 0.03 0.03 0.015
25Mn 0.22-0.29 0.17-0.37 0.70-1.00 0.035 0.035 /
27SiMn 0.24-0.32 1.10-1.40 1.10-1.40 0.035 0.035 /
ST52 ≤0.22 ≤0.55 ≤1.6 0.025 0.025 /
SAE1026 0.22-0.28 0.15-0.35 0.60-0.90 0.04 0.05 /
 
Delivery Condition cold finished (hard) (BK) cold drawn and stress-relieved (BK+S)  
 
Steel Grade Tensile Strength    (Mpa) Elongation    (%) Tensile Strength    (Mpa) Yield Strength      (Mpa) Elongation          (%)  
 
20# ≥550 ≥8 ≥520 ≥375 ≥15  
45# ≥640 ≥5 ≥600 ≥520 ≥10  
16Mn ≥640 ≥5 ≥600 ≥520 ≥14  
25Mn ≥640 ≥5 ≥600 ≥510 ≥15  
27SiMn ≥800 ≥5 ≥760 ≥610 ≥10  
ST52 ≥640 ≥5 ≥600 ≥520 ≥14  
SAE1026 ≥640 ≥5 ≥600 ≥510 ≥15  
Process
Packing
Inquiry Online
If you have any inquiries and questions, please contact Union Steel Industry Co., Ltd. at any time. Thanks in advance. Welcome!
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