Seamless Steel Tubes For Hydraulic Prop
Hydraulic prop pipes are made of high-quality carbon structural steel, to which one or several alloying elements are added to improve the strength, toughness and hardenability of the steel. This hot-rolled seamless steel pipe usually requires quenching and tempering, chemical heat treatment, surface hardening and other heat treatments.
Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of seamless steel tubes for hydraulic prop in China, also supports customized service with low price. Welcome to wholesale discount seamless steel tubes for hydraulic prop for sale here from our factory. Contact us for free sample.
SMLS Steel Pipe Description
Hydraulic strut pipe is based on high-quality carbon structural steel, the appropriate addition of one or more alloying elements, used to improve the strength, toughness, and hardenability of steel. This kind of steel is made and usually needs to go through the tempering, chemical heat treatment, surface quenching, and other heat treatment. Compared with high-quality carbon structural steel, has good overall mechanical properties, more rolled into a round, square, flat shape of the steel, used as machinery or machines in the important structural parts.
Chemical Composition of Hot-Rolled Seamless Steel Pipe
| Grade | Chemical Composition (%) | |||||||
| C | Si | Mn | p | S | Cr | Ni | Cu | |
| 20 | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | ≤ 0.035 | ≤ 0.035 | ≤ 0.25 | ≤ 0.25 | ≤ 0.20 |
| 35 | 0.32-0.40 | 0.17-0.37 | 0.50-0.80 | ≤ 0.035 | ≤ 0.035 | ≤ 0.25 | ≤ 0.25 | ≤ 0.20 |
| 45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤ 0.035 | ≤ 0.035 | ≤ 0.25 | ≤ 0.25 | ≤ 0.20 |
| 27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | ≤ 0.035 | ≤ 0.035 | ≤ 0.25 | ≤ 0.25 | ≤ 0.30 |
| 30MnNbRE | 0.27-0.36 | 0.20-0.60 | 1.20-1.60 | ≤ 0.035 | ≤ 0.035 | ≤0.25 | ≤ 0.25 | ≤ 0.30 |
Carbon Steel hydraulic tubing (Metric Sizes) Pressure Chart
|
O.D. (mm) |
Wall (mm) |
Maximum Working Pressure @ 6:1 SF (psi) |
Burst Pressure (psi) |
| 4 | .50 | 2294 | 13764 |
| 6 | 1.00 | 3051 | 18306 |
| 8 | 1.50 | 3440 | 20640 |
| 10 | 1.50 | 2748 | 16488 |
| 12 | 1.00 | 1525 | 9150 |
| 12 | 2.00 | 3051 | 18306 |
| 15 | 1.50 | 1829 | 10977 |
| 16 | 2.50 | 2862 | 17172 |
| 18 | 1.50 | 1525 | 9150 |
| 18 | 2.50 | 2550 | 15300 |
| 20 | 2.00 | 1829 | 10974 |
| 20 | 3.00 | 2749 | 16494 |
| 22 | 3.00 | 2502 | 15012 |
| 25 | 3.00 | 2198 | 13188 |
| 25 | 4.00 | 2929 | 17574 |
| 28 | 3.00 | 1962 | 11772 |
Steel Hydraulic Tube Sizes & Weight Chart
|
Outside |
Wall |
Inside |
Tolerance |
Flow |
Weight |
|
diameter |
thickness |
diameter |
of inside |
cross |
|
|
diameter |
section |
||||
|
[mm] |
[mm] |
[mm] |
[cm2] |
[kg/m] |
|
|
4 |
0,5 |
3 |
± 0,15 |
0,071 |
0,043 |
|
4 |
1 |
2 |
± 0,15 |
0,031 |
0,074 |
|
5 |
0,75 |
3,5 |
± 0,15 |
0,096 |
0,079 |
|
5 |
1 |
3 |
0,15 |
0,071 |
0,099 |
|
6 |
1 |
4 |
0,12 |
0,13 |
0,123 |
|
6 |
1,5 |
3 |
0,15 |
0,071 |
0,166 |
|
6 |
2 |
2 |
0,15 |
0,031 |
0,197 |
|
8 |
1 |
6 |
0,10 |
0,28 |
0,173 |
|
8 |
1,5 |
5 |
0,10 |
0,20 |
0,240 |
|
8 |
2 |
4 |
0,15 |
0,13 |
0,296 |
|
8 |
2,5 |
3 |
0,15 |
0,071 |
0,339 |
|
10 |
1 |
8 |
0,08 |
0,50 |
0,222 |
|
10 |
1,5 |
7 |
0,12 |
0,38 |
0,314 |
|
10 |
2 |
6 |
0,15 |
0,28 |
0,395 |
|
10 |
2,5 |
5 |
0,15 |
0,20 |
0,462 |
|
12 |
1 |
10 |
0,08 |
0,79 |
0,271 |
|
12 |
1,5 |
9 |
0,10 |
0,64 |
0,389 |
|
12 |
2 |
8 |
0,12 |
0,50 |
0,493 |
|
12 |
2,5 |
7 |
0,15 |
0,38 |
0,586 |
|
12 |
3 |
6 |
0,15 |
0,28 |
0,666 |
|
14 |
1 |
12 |
0,08 |
1,13 |
0,321 |
|
14 |
1,5 |
11 |
0,08 |
0,95 |
0,462 |
|
14 |
2 |
10 |
0,10 |
0,79 |
0,592 |
|
14 |
2,5 |
9 |
0,12 |
0,64 |
0,709 |
|
14 |
3 |
8 |
0,15 |
0,50 |
0,814 |
|
15 |
1 |
13 |
0,08 |
1,33 |
0,345 |
|
15 |
1,5 |
12 |
0,08 |
1,13 |
0,499 |
|
15 |
2 |
11 |
0,10 |
0,95 |
0,641 |
|
15 |
2,5 |
10 |
0,12 |
0,79 |
0,771 |
|
15 |
3 |
9 |
0,15 |
0,64 |
0,888 |
|
16 |
1 |
14 |
0,08 |
1,54 |
0,37 |
|
16 |
1,5 |
13 |
0,08 |
1,33 |
0,536 |
|
16 |
2 |
12 |
0,15 |
1,13 |
0,691 |
|
16 |
2,5 |
11 |
0,12 |
0,95 |
0,832 |
|
16 |
3 |
10 |
0,15 |
0,79 |
0,962 |
|
18 |
1 |
16 |
0,08 |
0,01 |
0,419 |
|
18 |
1,5 |
15 |
0,08 |
1,77 |
0,610 |
|
18 |
2 |
14 |
0,08 |
1,54 |
0,789 |
|
18 |
2,5 |
13 |
0,15 |
1,33 |
0,956 |
|
18 |
3 |
12 |
0,15 |
1,13 |
1,11 |
|
20 |
1,5 |
17 |
0,08 |
2,27 |
0,684 |
|
20 |
2 |
16 |
0,08 |
2,01 |
0,888 |
|
20 |
2,5 |
15 |
0,15 |
1,77 |
1,08 |
|
20 |
3 |
14 |
0,15 |
1,54 |
1,26 |
|
20 |
3,5 |
13 |
0,15 |
1,33 |
1,424 |
|
20 |
4 |
12 |
0,15 |
1,13 |
1,58 |
|
22 |
1 |
20 |
0,08 |
3,14 |
0,518 |
|
22 |
1,5 |
19 |
0,08 |
2,84 |
0,758 |
|
22 |
2 |
18 |
0,08 |
2,55 |
0,986 |
|
22 |
2,5 |
17 |
0,08 |
2,27 |
1,2 |
|
22 |
3 |
16 |
0,15 |
2,01 |
1,41 |
|
22 |
3,5 |
15 |
0,15 |
1,77 |
1,60 |
|
22 |
4 |
14 |
0,15 |
1,54 |
1,78 |
|
25 |
1,5 |
22 |
0,08 |
3,80 |
0,869 |
|
25 |
2 |
21 |
0,08 |
3,46 |
1,13 |
|
25 |
2,5 |
20 |
0,08 |
3,14 |
1,39 |
|
25 |
3 |
19 |
0,15 |
2,84 |
1,63 |
|
25 |
4 |
17 |
0,15 |
2,27 |
2,07 |
|
25 |
4,5 |
16 |
0,15 |
2,01 |
2,28 |
|
25 |
5 |
15 |
0,15 |
1,77 |
2,47 |
|
28 |
1,5 |
25 |
0,08 |
4,91 |
0,980 |
|
28 |
2 |
24 |
0,08 |
4,52 |
1,28 |
|
28 |
2,5 |
23 |
0,08 |
4,16 |
1,572 |
|
28 |
3 |
22 |
0,15 |
3,80 |
1,85 |
|
28 |
4 |
20 |
0,15 |
3,14 |
2,37 |
|
28 |
5 |
18 |
0,15 |
2,55 |
2,84 |
|
30 |
2 |
26 |
0,08 |
5,31 |
1,38 |
|
30 |
2,5 |
25 |
0,08 |
4,91 |
1,70 |
|
30 |
3 |
24 |
0,15 |
4,52 |
2,00 |
|
30 |
4 |
22 |
0,15 |
3,80 |
2,57 |
|
30 |
5 |
20 |
0,15 |
3,14 |
3,08 |
|
30 |
6 |
18 |
0,15 |
2,55 |
3,55 |
|
35 |
2 |
31 |
0,15 |
7,55 |
1,63 |
|
35 |
2,5 |
30 |
0,15 |
7,07 |
2,004 |
|
35 |
3 |
29 |
0,15 |
6,61 |
2,37 |
|
35 |
4 |
27 |
0,15 |
5,73 |
3,06 |
|
35 |
5 |
25 |
0,15 |
4,91 |
3,70 |
|
35 |
6 |
23 |
0,15 |
4,16 |
4,29 |
|
38 |
2 |
34 |
0,15 |
9,08 |
1,766 |
|
38 |
2,5 |
33 |
0,15 |
8,55 |
2,19 |
|
38 |
3 |
32 |
0,15 |
8,04 |
2,59 |
|
38 |
4 |
30 |
0,15 |
7,07 |
3,35 |
|
38 |
5 |
28 |
0,15 |
6,16 |
4,07 |
|
38 |
6 |
26 |
0,15 |
5,31 |
4,74 |
|
38 |
7 |
24 |
0,15 |
4,52 |
5,35 |
|
38 |
8 |
22 |
0,15 |
3,8 |
5,92 |
|
42 |
2 |
38 |
0,20 |
11,34 |
1,97 |
|
42 |
3 |
36 |
0,20 |
10,18 |
2,89 |
|
42 |
4 |
34 |
0,20 |
9,08 |
3,75 |
|
42 |
5 |
32 |
0,20 |
8,04 |
4,56 |
|
42 |
6 |
30 |
0,20 |
7,07 |
5,33 |
|
42 |
8 |
26 |
0,20 |
5,31 |
6,71 |
|
50 |
4 |
42 |
0,20 |
13,85 |
4,54 |
|
50 |
5 |
40 |
0,20 |
12,57 |
5,55 |
|
50 |
6 |
38 |
0,20 |
11,34 |
6,51 |
|
50 |
8 |
34 |
0,20 |
9,08 |
8,29 |
|
50 |
9 |
32 |
0,20 |
8,04 |
9,1 |
|
50 |
10 |
30 |
0,20 |
7,07 |
9,86 |
|
55 |
4 |
47 |
0,25 |
17,34 |
5,03 |
|
55 |
6 |
43 |
0,25 |
14,51 |
7,25 |
|
55 |
8 |
39 |
0,25 |
11,95 |
9,27 |
|
55 |
10 |
35 |
0,25 |
9,62 |
11,10 |
|
60 |
5 |
50 |
0,25 |
19,63 |
6,78 |
|
60 |
8 |
44 |
0,25 |
15,20 |
10,26 |
|
60 |
10 |
40 |
0,25 |
12,57 |
12,33 |
|
60 |
12,5 |
35 |
0,25 |
9,62 |
14,64 |
|
70 |
5 |
60 |
0,30 |
28,26 |
8,02 |
|
70 |
8 |
54 |
0,30 |
22,89 |
12,23 |
|
70 |
10 |
50 |
0,30 |
19,63 |
14,80 |
|
70 |
12,5 |
45 |
0,30 |
15,90 |
17,72 |
|
80 |
6 |
68 |
0,35 |
36,30 |
10,95 |
|
80 |
8 |
64 |
0,35 |
32,15 |
14,21 |
|
80 |
10 |
60 |
0,35 |
28,26 |
17,26 |
|
80 |
12,5 |
55 |
0,35 |
23,75 |
20,81 |
Carbon Seamless Steel Pipe Tolerances of Outside Diameter:
|
O.D. 4 - 30 mm |
± 0.08 mm |
|
O.D. 35 - 38 mm |
± 0.15 mm |
|
O.D. 42 - 50 mm |
± 0.20 mm |
|
O.D. 55 - 60 mm |
± 0.25 mm |
|
O.D. 70 mm |
± 0.30 mm |
|
O.D. 80 mm |
± 0.35 mm |
|
Other dimensions upon agreement, tolerances according |
|
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