Seamless Cylinder Steel Tube 37mn 4140 34CrMo4 for Gas Cylinder
PART I: PRODUCT INTRODUCTION
What is a high pressure cylinder tube?
High pressure gas cylinder tube is a kind of seamless steel tube, commonly known as seamless steel tube for gas cylinders, widely used in all kinds of high pressure vessel tanks, as well as industrial gas cylinders, fire cylinders, vehicle CNG cylinders, vehicle composite winding cylinders and other gas cylinders manufacturing.
What are the manufacturing processes of high-pressure gas cylinder tubes?
High pressure gas cylinder tube can be divided into hot rolled and cold drawn. Hot rolled gas cylinder tube is mainly used to manufacture all kinds of pressure vessels, cylinders and other products. Cold drawn gas cylinder seamless steel tube is mainly used to manufacture vehicle-mounted gas cylinders requiring light weight and thin wall thickness and steel liner circular winding vehicle-used CNG cylinders.
What are the production inspection and testing standards for high-pressure gas cylinder tubes?
The domestic standards are GB/T 18248 and GB/T 28884, and the corresponding foreign standards are JIS G 3429, ISO 11120, ASTM 372, etc
What are the main materials of high pressure cylinder tube at home and abroad?
The main materials of gas cylinder tube in China are 37Mn, 34CrMo4, 35CrMo, 30CrMnSiA, 30CrMo, 34Mn2V,
The main foreign standard material of gas cylinder tube is: 38Mn6, 30CrMo4, Group , 4130X, Grade C, Grade E, STH11, STH12, STH21, STH22
Characteristics and advantages of high-pressure gas cylinder tubes manufactured by our company: Raw materials provided by HengGang high-quality special steel and its high purity of steel, cold drawn cylinder tube, the tube body geometry size and the inner and outer surface quality, its wall thickness uniformity and high precision, light quality, productivity and yield is quite high, also facilitate cylinder manufactory convergent, and I produce cylinder pipe diameter can be done in 325 ~ 430, the minimum wall thickness of 3.5 mm, As a conventional specification of gas cylinders, the delivery time is faster.
1. Description: Honing is a kind of machining technology. Through honing head, the inner hole of cold drawn pipe is processed by reciprocating high-speed grinding technology, so that the inner hole can meet the requirements of tolerance size and surface roughness that we need.
Honed tube is a kind of smooth bore steel tube used to manufacture hydraulic cylinder barrels that is the core part of a piece of hydraulic cylinder.
2. Commodity: St52.4 Honed Hydraulic Cylinder Precision Pipe
3. Size range: Inside diameter: 25mm -500mm; Wall thickness: 2-50mm
4. Available steel grade:
| SAE/AISI: |
38Mn6,30CrMo4,Group ,4130X,Grade C,Grade E,STH11,STH12,STH21,STH22
|
| DIN: |
ST52, ST52.3, ST52.4 |
| EN: |
E355, C45E, 25CrMo4, 42CrMo4, CK45, S45C, E410, E470 |
| GB: |
37Mn,34CrMo4,35CrMo,30CrMnSiA,30CrMo,34Mn2V, |
5. Manufacture method: Cold rolled, hydraulic cold drawn, hot rolled+deep hole boring
6. Delivery condition:
| BK |
BKW |
BKS |
GBK |
NBK |
Q+T |
| +C |
+LC |
+SR |
+A |
+N |
| Cold rolled |
Cold drawn |
Stress relieved |
Annealed |
Normalized |
Quenched+Tempered |
7. Bore treatment: Honing, skiving&roller burnishing
8. Bore roughness control: Ra0.25um max or Ra0, 35um max for honed tubes, Ra0.25um max for skived&roller burnished tubes.
9. End finish: Plain ends with square cuts, free of burrs for honed tubes. Little bevelled ends for skived&roller burnished tubes.
10. Standard export packing: In bundles tied with steel strips. Internal & external oil coating. Plastic caps on both ends. External packing by PVC bags and knit bags.
11. Customized packing and marking can be provided upon request.
12. H8 tolerance:
| ID range |
Tolerance |
ID range |
Tolerance |
| 18< d ≤30 |
+0/+0.033 |
180< d ≤250 |
+0/+0.072 |
| 30< d ≤50 |
+0/+0.039 |
250< d ≤300 |
+0/+0.081 |
| 50< d ≤80 |
+0/+0.046 |
300< d ≤315 |
+0/+0.081 |
| 80< d ≤120 |
+0/+0.054 |
315< d ≤400 |
+0/+0.089 |
| 120< d ≤180 |
+0/+0.063 |
400< d ≤500 |
+0/+0.097 |
13. Difference between honed tube and skived & roller burnished tube: In hydraulic cylinder industry, there are 2 solutions for bore treatment: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing leads to different internal surface image, but both ensure good roughness.
Transportation and Package:
1.Black varnish painted or oil painted anti-corrosion oil ,2PE, 3PE on the surface
2.Plain,squire cut or bevelled end by caps
3.In hexagon or triangle bundle with steel strips
4.Marking: As per customer's requirment
Trade Terms:FOB/CIF/CFR
Payment Terms:L/C,T/T, Western Union.
Loading Port:XinGang TianJin, China
Delivery: Within 15-20days after we receive deposit or L/C at sight
Our Company:
Tianjin Boer King Steel Co.,Ltd. is located in Shuang Gang industrial zone of Jinnan district ,Tianjin.we have been engaged in export of steel pipes for about ten years. Now, We sell 160,000 tons steel pipes per year, including the steel pipes for the high, medium and low pressure boilers, shipping, transporting liquid products, the petroleum cracking process, the fertilizer facilities, the structure ,the hollow sucker rod , oil well casing and drill pipe,galvanized steel pipe and some stainless steel. Our products are very popular in the overseas market.we enjoy the good reputation with high qulity and better service.
Warmly welcome customers home and abroad to visit our company and give us valuable suggestions. We would like to have long
term cooperation with customers from all over the world on the basis of mutual prosperity and development!
Customers visits and Exhibition:
Why choose us?
High Quality
We have established quality management system according to ISO9001:2008 and carry out the total quality management.
Competitive Price
We can offer you reasonble price as your requirement.
Fast Delivery
we have large stocks,and can do OEM very fast as your requirements.
Good Service
Timely reply! Perfect packing! Friendly atitude! Do our best to meet your demand!
Various Products
Carbon seamless steel pipe,Oil Casing ,Drill Steel Pipe,Galvanized Steel Pipe,Carbon weled steel pipe,Stainless Steel productions,...... Also we can do OEM.
If you have any question, please feel free to contact me by the email or telephone!
Best Regards
Cindy Yang
Tianjin Boerking Steel Pipe Co.,ltd
Add:No.602 Liandong U Valley,Shuanggang Town, Jinnan District, TianJin,China
Audited Supplier 
){kind=link}