Phone: +8621 3378 0199
E-mail:sales@sunnysteel.com
Application | Features Specifications | Chemical Composition | Mechanical Properties |
OD(mm) | Wall Thickness Unit(mm) | |||||||||||||
2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 6 | 6.5-7 | 7.5-8 | 8.5-9 | 9.5-10 | 11 | 12 | |
Φ25-Φ28 | ● | ● | ● | ● | ● | ● | ||||||||
Φ32 | ● | ● | ● | ● | ● | ● | ||||||||
Φ34-Φ36 | ● | ● | ● | ● | ● | ● | ||||||||
Φ38 | ● | ● | ● | ● | ● | ● | ||||||||
Φ40 | ● | ● | ● | ● | ● | |||||||||
Φ42 | ● | ● | ● | ● | ● | |||||||||
Φ45 | ● | ● | ● | ● | ● | ● | ||||||||
Φ48-Φ60 | ● | ● | ● | ● | ● | ● | ● | |||||||
Φ63.5 | ● | ● | ● | ● | ● | ● | ● | |||||||
Φ68-Φ73 | ● | ● | ● | ● | ● | ● | ||||||||
Φ76 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
Φ80 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
Φ83 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
Φ89 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
Φ95 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
Φ102 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
Φ108 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||
Φ114 | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||
Φ121 | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||
Φ127 | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||
Φ133 | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||
Φ140 | ● | ● | ● | ● | ● | ● | ● | ● | ||||||
Φ146 | ● | ● | ● | ● | ● | ● | ● | ● | ||||||
Φ152 | ● | ● | ● | ● | ● | ● | ● | ● | ||||||
Φ159 | ● | ● | ● | ● | ● | ● | ● | ● | ||||||
Φ168 | ● | ● | ● | ● | ● | ● | ● | ● |
Grade | Chemical Composition | Mechanical Property | ||||||||
C | Si | Mn | P≤ | S≤ | Cr | Mo | (MPa) | (MPa) | (%) | |
St35.8 | ≤0.17 | 0.10~ 0.35 | 0.40~ 0.80 | 0.030 | 0.030 | / | / | 360~480 | ≥235 | ≥25 |
St45.8 | ≤0.21 | 0.10~ 0.35 | 0.40~ 1.20 | 0.030 | 0.030 | / | / | 410~530 | ≥255 | ≥21 |
15Mo3 | 0.12~ 0.20 | 0.10 ~0.35 | 0.40~ 0.80 | 0.030 | 0.030 | / | 0.25~ 0.35 | 460~600 | ≥270 | ≥20 |
Grade | Chemical Composition | Mechanical Property | |||||||||
C | Si | Mn | P≤ | S≤ | Cr≤ | Mo | (MPa) | (MPa) |
| ||
L | t | ||||||||||
195GH | ≤0.13 | ≤0.35 | ≤0.70 | 0.025 | 0.020 | 0.30 | ≤0.08 | 320~440 | ≥195 | ≥27 | ≥25 |
P235GH | ≤0.16 | ≤0.35 | ≤1.20 | 0.025 | 0.020 | 0.30 | ≤0.08 | 360~500 | ≥235 | ≥25 | ≥23 |
P265GH | ≤0.20 | ≤0.40 | ≤1.40 | 0.025 | 0.020 | 0.30 | ≤0.08 | 410~570 | ≥265 | ≥23 | ≥21 |
20MnNb6 | ≤0.22 | 0.15~ 0.35 | 1.00~ 1.50 | 0.025 | 0.020 | - | - | 500~650 | ≥355 | ≥22 | ≥20 |
16Mo3 | 0.12~ 0.20 | ≤0.35 | 0.40~ 0.90 | 0.025 | 0.020 | 0.30 | 0.25~ 0.35 | 450~600 | ≥280 | ≥22 | ≥20 |
Seamless pipes are extensively applied for the nuclear device, gas, petrochemical, ship building and boiler industries. Seamless pipes dominates 65% of market share in Chinese boiler industry.
Term | Symbol | Explanation |
Cold-finished/hard (cold-finished as-drawn) |
BK | No heat treatment after the last cold-forming process. The tubes therefore have only low deformability. |
Cold-finished/soft (lightly cold-worked) |
BKW | After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits. |
Annealed | GBK | After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum. |
Normalized | NBK | The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum. |
Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.