High-pressure gas cylinder steel pipe
This pipe is used in manufacturing seamless steel gas cylinders, automotive CNG cylinders and composite cylinders. It provides excellent hot rolled thin-walled seamless steel pipe for tube-type bottle. This high-pressure gas cylinder pipe has such features: quality inside and outside surface; uniform wall thickness; light mass; high productivity and yield and low cost, etc. It has been applied in seamless tube-type bottle bottom closing in key technology, adopting the gas cylinder pipe manufacture from punching drawing billet to thin-walled seamless steel pipe production. And this change is welcomed by users and has been an trend.
• Accumulator steel pipe used in hydraulic accumulator and energy storage pressure vessel housing.
• Vehicle large gas cylinder steel pipe used in vehicle large diameter gas cylinder.
Vehicle large gas cylinder steel pipe
Accumulator steel pipe
High-pressure gas cylinder steel pipe
O.D(mm) |
70 |
89 |
102 |
108 |
114 |
121 |
123 |
127 |
140(139.7) |
|
W.T(mm) |
4.5-7.0 |
4.5-8.0 |
4.5-10.0 |
4.5-10.0 |
4.5-10.0 |
4.5-10.0 |
4.5-12.0 |
4.5-12.0 |
4.5-12.0 |
|
O.D(mm) |
146 |
152(152.4) |
165 |
168 |
178 |
180 |
182 |
194 |
204 |
|
W.T(mm) |
4.5-12.0 |
4.5-12.0 |
5.0-12.0 |
5.0-14.0 |
5.5-15.0 |
5.5-15.0 |
5.5-15.0 |
5.5-15.0 |
5.5-15.0 |
|
O.D(mm) |
229 |
232 |
245 |
255 |
262 |
267 |
273 |
279 |
356 |
|
W.T(mm) |
5.5-14.0 |
6.0-18.0 |
8.0-20.0 |
7.5-30.0 |
7.5-30.0 |
7.5-30.0 |
7.5-30.0 |
7.5-30.0 |
8.5-36 |
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O.D(mm) |
406 |
559 |
610 |
630 |
711 |
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W.T(mm) |
8.5-38.0 |
16-27.0 |
18-30.0 |
18-30.0 |
18-45 |
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Grade |
Chemical Analysis(%) |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Mo |
V |
30CrMo |
0.26-0.34 |
0.17-0.37 |
0.40-0.70 |
≤0.025 |
≤0.025 |
0.80~1.10 |
|
≤0.20 |
0.15~0.25 |
— |
34CrMo4 |
0.32~0.39 |
0.17-0.37 |
0.40-0.70 |
≤0.025 |
≤0.035 |
0.80~1.10 |
|
≤0.20 |
0.15~0.25 |
— |
37Mn/1 |
0.36~0.40 |
0.17-0.37 |
1.50-1.70 |
≤0.025 |
≤0.025 |
≤0.30 |
|
≤0.20 |
— |
— |
37Mn/2 |
0.34~0.38 |
0.17-0.37 |
1.45-1.70 |
≤0.025 |
≤0.025 |
≤0.30 |
|
≤0.20 |
— |
— |
37Mn/3 |
0.30-0.37 |
0.17-0.37 |
1.40-1.75 |
≤0.025 |
≤0.025 |
≤0.30 |
≤0.30 |
≤0.20 |
≤0.10 |
0.07-0.12 |
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Heat Treatment |
|
Grade |
Kind |
Normalizing ℃ |
Cooling |
Tempering ℃ |
Cooling |
T.S.(MPa) |
Y.S.(MPa) |
Elongation(%) |
Impact Test Akv(J) |
|
30CrMo |
Q |
890±10 |
Water Cooling |
650±10 |
Air Cooling |
780 |
660 |
16 |
55 |
|
34CrMo4 |
Q |
880±10 |
Water Cooling |
635±10 |
Air Cooling |
890 |
755 |
16 |
55 |
|
37Mn/1 |
N |
840±10 |
Water Cooling |
|
|
730 |
520 |
16 |
30 |
|
37Mn/2 |
N& Q |
840±10 |
Water Cooling |
600±10 |
Air Cooling |
730 |
610 |
16 |
55 |
|
37Mn/3 |
N |
870±10 |
Water Cooling |
|
|
730 |
520 |
16 |
30 |
|
Standard
GB 18248, JIS G3429, EN 10083, DIN17200+Technical Agreement
ASTM A519 —Seamless Carbon and Alloy Steel Mechanical Tubing 37Mn, 34CrMo4
Cylinder tubes conforming to DIN 10305-1 seamless
Cylinder tubes DOM conforming to DIN 10305-2 welded
Cylinder tubes DOM conforming to ASTM A 513 welded
Cylinder tubes made of stainless steel Cylinder tubes conforming to DIN 2448