Basic Info.
Model NO.
IR-B
Size
30mm~416mm
Length
Fixed Length, by Random
End Processing
Plain Ends
Surface
Bare Pipe, Anti-Rust Painting
Steel Material
St52, Q345b, 27simn, 15CrMo, 40cr, etc
Transport Package
Standard Seaworthy Packing
Specification
ASTM, DIN, GB/T
Trademark
Iron&steel
Origin
China
HS Code
73045910
Production Capacity
2000tons Per Month
Product Description
High precision honing pipe 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.
The honing pipe is used for the hydraulic cylinder making.
Used as the pipes on the heated side of low and medium pressure boilers(normally with operating pressure not higher than 5.88Mpa and
operating temperature below 450 oc);as the pipes on the heated sides of high·pressure boilers,economizers,overheaters,reheaters and pipes
for petrochemical industry(with the operating pressure above 9.8Mpa and operating temperature ranging between 450~C~650~C
Specifications of major steel material:
Tolerance of ID and WT
Length and cut tolerance
Length ≤ 500mm , +2mm
> 500mm ≤ 2000mm, +3mm
> 2000mm ≤ 5000mm, +5mm
> 2000mm ≤ 7000mm, +10mm
Standard:DIN 2391,EN10305
Material: St45,St52,E355
Chemical composition
9. Mechanical Properties
Tube ends
Tube ends shall be cut nominally square to the axis and free from burs
11.Delivery condition:BKS
Appearance
Tube shall have a smooth internal and external surface consistent with cold working process, tube inner surface should be free from rust, scratches and other surface
irregularities.
The honing pipe is used for the hydraulic cylinder making.
Used as the pipes on the heated side of low and medium pressure boilers(normally with operating pressure not higher than 5.88Mpa and
operating temperature below 450 oc);as the pipes on the heated sides of high·pressure boilers,economizers,overheaters,reheaters and pipes
for petrochemical industry(with the operating pressure above 9.8Mpa and operating temperature ranging between 450~C~650~C
Specifications of major steel material:
Processing form | I.D.mm | Length | Straightness | I.D.tolerance | I.D.Roughness(RA) |
Cold-rolled | 30-100 | ≤12M | 0.3-1.0/1000 | H8-H10 | 0.4-1.6um |
Cold-drawn | 30-250 | ≤12M | H8-H10 | 0.8-1.6um | |
Hone | 40-500 | ≤12M | H8-H9 | 0.4-0.8um | |
SRB | 50-250 | ≤9M | H8 | 0.1-0.4um |
Tolerance of ID and WT
Size of inside Diameter(mm) | ID Tolerance | Tolerance of wall thickness | ||
30 | +0.0330 | +0.0520 | +0.0840 | <120mm(OD) ±5% >120mm up to 210mm±7.5% >210mm ±10% |
>30-50 | +0.0390 | +0.0620 | +0.1000 | |
>50-80 | +0.0460 | +0.0740 | +0.1200 | |
>80-120 | +0.0540 | +0.0870 | +0.1400 | |
>120-180 | +0.0630 | +0.1000 | +0.1600 | |
>180-250 | +0.0720 | +0.1150 | +0.1850 | |
>250-315 | +0.0810 | +0.1300 | +0.2100 | |
>315-400 | +0.0890 | +0.1400 | +0.2300 | |
Length and cut tolerance
Length ≤ 500mm , +2mm
> 500mm ≤ 2000mm, +3mm
> 2000mm ≤ 5000mm, +5mm
> 2000mm ≤ 7000mm, +10mm
Standard:DIN 2391,EN10305
Material: St45,St52,E355
Chemical composition
Steel grade | Chemical composition,% | |||||
C | Si | Mn | P | S | Cr | |
≤ | ||||||
St45 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.250 |
ST52(E355) | ≤0.22 | ≤0.55 | ≤1.6 | 0.025 | 0.025 | 0.25 |
SAE1026 | 0.22-0.28 | 0.15-0.35 | 0.60-0.90 | 0.040 | 0.050 | / |
27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | 0.035 | 0.035 | 0.300 |
20# | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.250 |
9. Mechanical Properties
Delivery condition | BK Cold finished(hard) | BKS Cold drawn and stress-relieved | |||
Steel grade | Rm Mpa | Elongation A5(%) | Rm MPa | ReH MPa | Elonggation A5(%) |
ST45 | ≥550 | ≥5 | ≥520 | ≥375 | ≥15 |
ST52(E355) | ≥640 | ≥5 | ≥600 | ≥520 | ≥14 |
SAE1026 | ≥640 | ≥5 | ≥600 | ≥510 | ≥15 |
16Mn | ≥640 | ≥5 | ≥600 | ≥520 | ≥14 |
20# | ≥550 | ≥8 | ≥520 | ≥375 | ≥15 |
Tube ends
Tube ends shall be cut nominally square to the axis and free from burs
11.Delivery condition:BKS
Appearance
Tube shall have a smooth internal and external surface consistent with cold working process, tube inner surface should be free from rust, scratches and other surface
irregularities.