EN 10297 applies to the manufacture of seamless carbon steel pipe for gas cylinder.
Gas cylinders are widely used in industrial and mining enterprises, fire control, and medical fields, to store and release gas medium. Gas cylinder tube is a seamless steel pipe suitable for the production of gas cylinder or other high pressure vessels.
Specification
| Standard | EN 10297 |
| Grade | 38Mn6, 30CrMo4, 34CrMo4 |
| Thickness | 2.9 – 60 mm(Sch10~Sch XXS) |
| Outer Diameter | 38 – 720 mm (2.75’’-28 ‘’) |
| Length | 5.8-12m or OEM |
| End | PE or BE |
| Packing | Plastic cap or bundling |
| Surface Treatmengt | Black paint,3LPE,3LPP,FBE or OEM |
| Section Shape | Round |
| Technique | Seamless hot rolled |
| Brand Name | Baotou Steel |
| Application | Used to make gas cylinders, bottles and other gas vessels |
| Place of Origin | China |
| MOQ | 25 ton |
| Transportation | 1.Sea port:Tianjin Xingang port,Qingdao port,Shanghai Luojing port →America,Europe,Africa,Middle East,India, Pakistan,Japan,Korea, Australia…(shipping) 2.Land port:Alataw pass port(Пограничный пункт “Алашанькоу”) |
| Chemical composition in % by mass | |||||||||||||||
| Steel grade | C | Si | Mn | P | S | Cr | Mo | Ni | |||||||
| Steel name | Steel | min | max | min | max | min | max | max | max | min | max | min | max | min | max |
| number | |||||||||||||||
| 38Mn6 | 1.1127 | 0,34 | 0,42 | 0,15 | 0,35 | 1,40 | 1,65 | 0,035 | 0,035 | – | – | – | – | – | – |
| 30CrMo4 | 1.7216 | 0,27 | 0,34 | – | 0,35 | 0,35 | 0,60 | 0,035 | 0,035 | 0,80 | 1,15 | 0,15 | 0,30 | – | – |
| 34CrMo4 | 1.722 | 0,30 | 0,37 | – | 0,40 | 0,60 | 0,90 | 0,035 | 0,035 | 0,90 | 1,20 | 0,15 | 0,30 | – | – |
| Classification of steel grades and delivery condition | |||
| Steel grade | Steel number | Nominal delivery condition | Classification in accordance with EN 10020 |
| 38Mn6 | 1.1127 | +N or +QT | Non-alloy special steel |
| 30CrMo4 | 1.7216 | +QT | Alloy special steel |
| 34CrMo4 | 1.722 | ||
| Mechanical properties for tubes made of steels in accordance with the delivery condition +QT | |||||||||||||||||
| Steel grade | Minimum tensile properties | ||||||||||||||||
| Steel name | Steel number | Yield strength (ReH) | Tensile strength ( Rm) | A% | |||||||||||||
| MPa | MPa | ||||||||||||||||
| For T in mm | For T in mm | For T in mm | |||||||||||||||
| ≤ 8 | > 8 | > 20 | > 50 | ≤ 8 | > 8 | > 20 | > 50 | ≤ 8 | > 8 | > 20 | > 50 | ||||||
| ≤ 20 | ≤ 50 | ≤ 80 | ≤ 20 | ≤ 50 | ≤ 80 | ≤ 20 | ≤ 50 | ≤ 80 | |||||||||
| l | t | l | t | l | t | l | t | ||||||||||
| 38Mn6 | 1.1127 | 620 | 570 | 470 | 400 | 850 | 750 | 650 | 550 | 13 | 11 | 14 | 12 | 15 | 13 | 16 | 14 |
| 30CrMo4 | 1.7216 | 750 | 630 | 520 | 480 | 950 | 850 | 750 | 700 | 12 | 10 | 13 | 11 | 14 | 12 | 15 | 13 |
| 34CrMo4 | 1.722 | 800 | 650 | 550 | 500 | 1000 | 900 | 800 | 750 | 11 | 9 | 12 | 10 | 14 | 12 | 15 | 13 |
| NOTE l = longitudinal, t = transverse. | |||||||||||||||||
