Precision pipe is the carbon, alloy or stainless steel pipe with high precision sizes. Usually it has been made through hot rolling or cold drawn (cold rolling) processes. So precision pipe is a kind of seamless pipe.
It is designed with several advantages:
Inside and outside surface no oxide coating;
It could bear high pressure, no leaking;
Strict less tolerance;
Surface smooth;
No reformation in cold bending, no cracks during flaring test, and flattening test.
With these advantages it is widely used for manufacturing the pneumatic parts and hydraulic components.
International standard for precision pipe is DIN 2391, which is applied with European standard.
As a matter of fact, more steel pipe standard could applied for the precision pipe. Includes DIN2445, EN10305, DIN1630, DIN1629, ASTM A106, ASTM A179, JIS G3445
Materials available with 10#, 20#, 35, 45, 40Cr, 25Mn. 37Mn5, St35(E235), St37.4, St45(E255), St52(E355) and etc.
For hot rolling precision steel pipe, tolerance of OD is +/- 0.1%.
For cold drawn precision pipe, tolerance allowed in below conditions:
Diameters 6mm to 10mm, normal tolerance condition +/- 0.2%, premium tolerance condition +/- 0.15%.
10mm to 30mm, normal tolerance condition +/- 0.4%, premium tolerance condition +/- 0.2%.
30mm to 50mm, normal tolerance condition +/- 0.45%, premium tolerance condition +/-0.3%.
For outer diameters above 50mm, normal tolerance condition +/- 0.1%, premium tolerance condition +/- 0.8%.
During manufacturing processes, the key point is to do the annealing for raw materials.
Precision steel pipe manufacturing flow chart:
Raw Material Inspection – Remove Oxide Layer – Visual Inspection – Heating – Hot Rolling – Pickling and Passivation (Phosphating) – Grinding – Lubrication and Drying – Cold Rolling (Internal and external extraction) – Remove Oil – Ends Cutting – Inspection – Marking – Packing and Storage
As we know, most of precision steel pipe has cold drawn and hot rolled process. On the contrast, cold rolling will be more complicated. Not only the pipe need to be continuous rolled by three roller, but also the test have to be done after extrusion, so to guarantee the quality of the precision pipe materials.
Manufacturing methods of seamless precision pipe includes hot rolling and cold drawn. More over it could be manufactured in welding processes.
a. You can get a smaller diameter with precision steel pipe
b. High precision pipe accept small quantity for MOQ.
c. The pipes with cold drawn processes has high precision and good surface finish.
d. The transverse area of the steel pipe is more complicated.
e. Performance is superior, with higher density.
The internal and external diameter could control within +/- 0.01 mm. In the guarantee of anti-bending strength and torque strength same, the weight of precision pipe is lighter. It can be widely used in manufacturing precision machinery parts and engineering structure, and also commonly used to produce various kinds of conventional weapons, barrel, shells, bearing and so on.
Product: | Seamless Precision Pipe,precision steel pipe, Seamless Precision Tube |
Application: | Used for Mechanical Structures,Hydraulic Equipment,Automative Parts |
Size: | OD: 6mm-114mm |
WT: 0.5mm - 60mm | |
LENGTH: 5.8/6/11.8/12m | |
Pipe Standard: | EN 10305 ASTM A106-2006 BS 1139 |
DIN 2391 DIN 2445 | |
Heat Treatment | NBK(+N) GBK(+A) BK(+C) BKW(+LC) BKS(+SR) |
Thickness | 0.5mm - 60mm | Alloy Or Not | Non-Alloy |
Section Shape | Round 10.3mm - 610mm | Tolerance | ±5% |
Place of Origin | China | Payment terms | L/C T/T (30%DEPOSIT) |
Application | Used for Mechanical Structures,Hydraulic Equipment, Automative Parts,structure/fluid/boiler/water and gas etc | Packing | STANDARD PACKING |
Technique | Cold Drawn | Inspection | Party Inspection |
Surface Treatment | oiled/black painting,NBK(+N) GBK(+A) BK(+C) BKW(+LC) BKS(+SR) | Price term | CIF CFR FOB EX-WORK |
Standard | EN 10305,,DIN 2391,DIN 2445 ASTM A106-2006, ASTM A53-2007, ANSI A210-1996, ASTM A179-1990, BS 1139, BS 6323, DIN 1626, DIN 1629/4, DIN 2391, DIN 17175, DIN2448 ,GB/T8162, Gb/t8163, JIS G3459-2004, JIS G3456-2004 | ||
Grade | STKM11A,STKM12B,STKM13A,10#, 20#, 45#, A53(A,B), A106(B,C), A179-C, ANSI4130 , 15Mo3, Q345, Q195, ST52, ST45, St37-2, ST35.4, ST35.8, ST54, 15crmo, 12Cr1MoV, API L80 | ||
Special Pipe | API Pipe | ||
Type | Seamless Steel Pipe | ||
Processing Service | Bending, Welding, Decoiling, Punching, Cutting | ||
Product name | DIN2391 ST35 ST45 ST52 Cold Drawn High Precision Tube | ||
Material | DIN2391 ST35 ST45 ST52 | ||
Keyword | DIN2391 ST35 ST45 ST52 Cold Drawn High Precision Tube | ||
Surface | Cold finished |
Specification
Outside Diameter (mm) / Wall Thickness (mm) | SCH 10 | SCH 20 | SCH 30 | STD | SCH 40 | SCH 60 | XS | SCH 80 | SCH 100 | SCH 120 | SCH 140 | SCH 160 |
457 | 6.35 | 7.92 | 11.13 | 9.53 | 14.27 | 19.05 | 12.70 | 23.88 | 29.36 | 34.93 | 39.67 | 45.24 |
508 | 6.35 | 9.53 | 12.70 | 9.53 | 15.09 | 20.62 | 12.70 | 26.19 | 32.54 | 38.10 | 44.45 | 50.01 |
559 | 6.35 | 9.53 | 12.70 | 9.53 |
| 22.23 | 12.70 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 |
610 | 6.35 | 9.53 | 14.27 | 9.53 | 17.48 | 24.61 | 12.70 | 30.96 | 38.39 | 46.02 | 52.37 | 59.54 |
660 | 7.92 | 12.70 |
| 9.53 |
|
| 12.70 |
|
|
|
|
|
711 | 7.92 | 12.70 | 15.88 | 9.53 |
|
| 12.70 |
|
|
|
|
|
762 | 7.92 | 12.70 | 15.88 | 9.53 |
|
| 12.70 |
|
|
|
|
|
Remark: The above standard and specification are just for reference, we can also produce customized product according to customer's request. |
High precision Tubes Technical Properties
Nominal size | Nominal Wall Thickness (mm) |
DN | SCH |
12.70 | 1.0, 1.2, 1.6, 2.0 |
13.50 | 1.0,1.2 |
16.00 | 1.0,1.2 |
17.20 | 1.0,1.2,1.6 |
19.00 | 1.0,1.2,1.6 |
20.00 | 1.0,1.2,1.6 |
21.30 | 1.0,1.2,1.67 |
22.00 | 1.0,1.2,1.6,2.0 |
25.40 | 1.0,1.2,1.6,2.0 |
26.90 | 1.0,1.2,1.6,2.0 |
28.50 | 1.0,1.2,1.6,2.0 |
30.00 | 1.0,1.2,1.6,2.0 |
31.80 | 1.0,1.2,1.6,2.0 |
33.70 | 1.0,1.2,1.6,2.0 |
38.00 | 1.0,1.2,1.6,2.0 |
42.40 | 1.0,1.2,1.6,2.0 |
44.50 | 1.0,1.2,1.6,2.0 |
48.30 | 1.0,1.2,1.6,2.0 |
51.00 | 51.00 |
wholesale steel seamless pipe | wholesale seamless steel tube pipe quotes |
wholesale steel pipes seamless astm a53 supplier | steel seamless pipes factory |
wholesale stainless steel seamless pipes | steel seamless pipes |
wholesale stainless steel seamless pipe | steel seamless pipe supplier |
wholesale stainless steel 304 seamless pipe | steel seamless pipe quotes |
wholesale seamless steel tube pipe supplier | steel seamless pipe manufacturers |