The seamless pipe for petroleum cracking is a long steel with a hollow section and no joints around, and the petroleum cracking pipe is an economical section steel.
Use
Widely used in the manufacture of structural and mechanical parts, such as oil drill pipe, automotive drive shafts, bicycle frames and steel scaffolding used in construction.
The use of petroleum cracking tubes to manufacture ring-shaped parts can improve material utilization, simplify manufacturing processes, save materials and processing man-hours, such as rolling bearing rings, jack sleeves, etc., and have been widely used in steel pipes.
Petroleum cracking pipes are also indispensable materials for various conventional weapons. The barrels and barrels are all made of petroleum cracking tubes.
Petroleum cracking tubes can be divided into round tubes and shaped tubes according to the shape of the cross-sectional area.
Since the area of the petroleum cracking tube is the largest under the condition of equal circumference, more fluid can be transported by the circular tube.
Calculation formula
Steel pipe weight calculation formula: [(outer diameter – wall thickness) * wall thickness] * 0.02466 = kg / m (weight per meter)
The main production of steel pipe grade:
10, 20, 15CrMo, 1Cr2Mo, 1Cr5Mo, etc.
Standard:
GB9948 – Chinese National Standard
(Or according to the customer’s desire to customize)
Dimensional tolerance
|
Steel pipe type |
Outer diameter (D) |
Steel pipe wall thickness (S) |
||
|
Cold drawn tube |
Steel pipe outer diameter (mm) |
Allowable deviation (mm) |
Steel pipe wall thickness (mm) |
Allowable deviation (mm) |
|
＞30～50 |
±0.3 |
≤30 |
±10％ |
|
|
＞50～219 |
±0.8％ |
|||
|
Hot rolled tube |
＞219 |
±1.0％ |
＞20 |
±10％ |
Mechanical properties:
|
Standard |
Brand |
Tensile strength (MPa) |
Yield strength (MPa) |
Elongation(%) |
Impact work (J) |
Brinell hardness (HB) |
Delivery status |
|
GB9948 |
10 |
330～490 |
≥205 |
≥24 |
/ |
/ |
Normalizing |
|
20 |
410～550 |
≥245 |
≥21 |
≥39 |
/ |
Normalizing |
|
|
15CrMo |
440～640 |
≥235 |
≥21 |
≥47 |
≤170 |
Normalizing and tempering |
|
|
1Cr2Mo |
≥390 |
≥175 |
≥22 |
≥92 |
≤179 |
Normalizing and tempering |
|
|
1Cr5Mo |
≥390 |
≥195 |
≥22 |
≥92 |
≤187 |
Annealing |
Chemical composition:
|
Standard |
Brand |
Chemical composition(%) |
|||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
||
|
GB9948 |
10 |
0.07～0.14 |
0.17～0.37 |
0.35～0.65 |
≤0.035 |
≤0.035 |
≤0.15 |
/ |
≤0.25 |
|
20 |
0.17～0.24 |
0.17～0.37 |
0.35～0.65 |
≤0.035 |
≤0.035 |
≤0.25 |
/ |
≤0.25 |
|
|
15CrMo |
0.12～0.18 |
0.17～0.37 |
0.40～0.70 |
≤0.035 |
≤0.035 |
0.80～1.10 |
0.40～0.55 |
≤0.30 |
|
|
1Cr2Mo |
≤0.15 |
0.50～1.00 |
0.30～0.60 |
≤0.035 |
≤0.030 |
2.15～2.85 |
0.45～0.65 |
/ |
|
|
1Cr5Mo |
≤0.15 |
≤0.50 |
≤0.60 |
≤0.035 |
≤0.030 |
4.00～6.00 |
0.45～0.60 |
≤0.60 |
|
Seamless pipe for petroleum cracking size by JawaySteel
Dimensional unit (mm)
| Sizes | Place of origin | Sizes | Place of origin | Sizes | Place of origin | Sizes | Place of origin |
| 18*3 | DAINAN | 60*8 | DAINAN | 133*14 | DAINAN | 273*9.5 | DAINAN |
| 18*4 | DAINAN | 60*9 | DAINAN | 140*8 | DAINAN | 273*10 | DAINAN |
| 22*3 | DAINAN | 60*10 | DAINAN | 140*9 | DAINAN | 273*11 | DAINAN |
| 22*4 | DAINAN | 76*5 | DAINAN | 152*7 | DAINAN | 273*12 | DAINAN |
| 22*5 | DAINAN | 76*6 | DAINAN | 152*8 | DAINAN | 273*13 | DAINAN |
| 25*3 | DAINAN | 76*7 | DAINAN | 152*9 | DAINAN | 273*14 | DAINAN |
| 25*3.5 | DAINAN | 76*8 | DAINAN | 152*10 | DAINAN | 273*15 | DAINAN |
| 25*4 | DAINAN | 76*10 | DAINAN | 159*6 | DAINAN | 273*16 | DAINAN |
| 25*4.5 | DAINAN | 89*4 | DAINAN | 159*6.5 | DAINAN | 273*18 | DAINAN |
| 27*4 | DAINAN | 89*4.5 | DAINAN | 159*7 | DAINAN | 273*20 | DAINAN |
| 27*5 | DAINAN | 89*5 | DAINAN | 159*8 | DAINAN | 273*22 | DAINAN |
| 27*5.5 | DAINAN | 89*6 | DAINAN | 159*8.5 | DAINAN | 273*25 | DAINAN |
| 32*3.5 | DAINAN | 89*6 | DAINAN | 159*10 | DAINAN | 325*8.5 | DAINAN |
| 32*4 | DAINAN | 89*6.5 | DAINAN | 159*11 | DAINAN | 325*9 | DAINAN |
| 32*4.5 | DAINAN | 89*7 | DAINAN | 159*12 | DAINAN | 325*9.5 | DAINAN |
| 32*5 | DAINAN | 89*7.5 | DAINAN | 159*14 | DAINAN | 325*10 | DAINAN |
| 34*3 | DAINAN | 89*8 | DAINAN | 159*16 | DAINAN | 325*12 | DAINAN |
| 34*4 | DAINAN | 89*9 | DAINAN | 159*18 | DAINAN | 325*13 | DAINAN |
| 34*4.5 | DAINAN | 89*10 | DAINAN | 168*6 | DAINAN | 325*15 | DAINAN |
| 34*5 | DAINAN | 89*11 | DAINAN | 168*7 | DAINAN | 325*16 | DAINAN |
| 34*6.5 | DAINAN | 89*12 | DAINAN | 168*8 | DAINAN | 325*17 | DAINAN |
| 38*3 | DAINAN | 89*14 | DAINAN | 168*9 | DAINAN | 325*18 | DAINAN |
| 38*4 | DAINAN | 102*8 | DAINAN | 168*9.5 | DAINAN | 325*22 | DAINAN |
| 38*5 | DAINAN | 108*6 | DAINAN | 168*10 | DAINAN | 325*25 | DAINAN |
| 45*4 | DAINAN | 108*7 | DAINAN | 168*11 | DAINAN | 356*9.5 | DAINAN |
| 45*5 | DAINAN | 108*8 | DAINAN | 168*12 | DAINAN | 356*11 | DAINAN |
| 48*3.5 | DAINAN | 108*9 | DAINAN | 168*14 | DAINAN | 356*15 | DAINAN |
| 48*4 | DAINAN | 108*10 | DAINAN | 168*15 | DAINAN | 356*19 | DAINAN |
| 48*4.5 | DAINAN | 108*12 | DAINAN | 168*16 | DAINAN | 356*28 | DAINAN |
| 48*5 | DAINAN | 114*5 | DAINAN | 168*18 | DAINAN | 356*28 | DAINAN |
| 48*6 | DAINAN | 114*5.5 | DAINAN | 168*20 | DAINAN | 377*9.5 | DAINAN |
| 48*7 | DAINAN | 114*6 | DAINAN | 219*7 | DAINAN | 377*10 | DAINAN |
| 51*5 | DAINAN | 114*8 | DAINAN | 219*8 | DAINAN | 377*11 | DAINAN |
| 51*6 | DAINAN | 114*8.5 | DAINAN | 219*10 | DAINAN | 377*14 | DAINAN |
| 57*4 | DAINAN | 114*9 | DAINAN | 219*12 | DAINAN | 377*15 | DAINAN |
| 57*5 | DAINAN | 114*10 | DAINAN | 219*13 | DAINAN | 377*16 | DAINAN |
| 57*5.5 | DAINAN | 114*11 | DAINAN | 219*14 | DAINAN | 377*25 | DAINAN |
| 57*6 | DAINAN | 114*12 | DAINAN | 219*15 | DAINAN | 406*9.5 | DAINAN |
| 60*4 | DAINAN | 114*12.5 | DAINAN | 219*16 | DAINAN | 406*13 | DAINAN |
| 60.45 | DAINAN | 114*14 | DAINAN | 219*18 | DAINAN | 406*17 | DAINAN |
| 60*5 | DAINAN | 127*8 | DAINAN | 219*20 | DAINAN | 406*26 | DAINAN |
| 60*5.5 | DAINAN | 127*10 | DAINAN | 219*25 | DAINAN | 406*32 | DAINAN |
| 60*6 | DAINAN | 133*10 | DAINAN | 273*8 | DAINAN | 426*10 | DAINAN |
| 60*7 | DAINAN | 133*12 | DAINAN | 273*9 | DAINAN | 426*13 | DAINAN |
