Yosun (Tianjin) Piping Engineering Co., Ltd. is one of the most credible manufacturers and suppliers of seamless alloy-steel tubes in China. Please feel free to wholesale customized seamless alloy-steel tubes at competitive price from our factory. If you have any enquiry about quotation, please feel free to email us.
Chemical Composition
| Element | Composition,% | |||
| Grade 7 | Grade 8 | Grade 9 | Grade 11 | |
| Carbon,max | 0.19 | 0.13 | 0.20 | 0.10 |
| Manganese | 0.90 max | 0.90 max | 0.40-1.06 | 0.60 max |
| Phosphorus,max | 0.025 | 0.025 | 0.025 | 0.025 |
Impact Requirements
| Size Of Specimen,mm | Minimum Average Notched Bar Impacy Value Of Each Set Of Three Specimens A | Mimimum Notched Bar Impact Value of One Specimen Only of a Set A | ||
| ft.lbf | J | ft.lbf | J | |
| 10 by 10 | 13 | 18 | 10 | 14 |
| 10 by 7.5 | 10 | 14 | 8 | 11 |
| 10 by 6.67 | 9 | 12 | 7 | 9 |
| 10 by 5 | 7 | 9 | 5 | 7 |
| 10 by 3.33 | 5 | 7 | 3 | 4 |
| 10 by 2.5 | 4 | 5 | 3 | 4 |
| A Straight line interpolation for intermediate values is permitted. | ||||
| Impact Temperature | ||
| Grade | Impact Test Temperature | |
| °F | ℃ | |
| 1 | -50 | -45 |
| 3 | -150 | -100 |
| 6 | -50 | -45 |
| 7 | -100 | -75 |
| 8 | -320 | -195 |
| 9 | -100 | -75 |
PMI Test
Productions
Material authenticity is guaranteed. Each steel pipe can be traced back to its source.
A vast inventory with complete specifications, as convenient as shopping in a supermarket.
The list of requirements is our production order. Small batch trial orders, large batch long-term support, flexible cooperation model
Shipment
FAQ
Q: Does the order have a MOQ?
A: No.
Q: What are the commonly used trade terms?
A: FOB or CIF.
Q: What is the shipping method?
A: LCL/FCL/BULK
Q: What kind of processing method?
A: 60mm and below is PE,60mm above is BE,168mm and below in boundles,168mm above in loose,all diameter is black paint,caps,sling.
Q: What kind of transaction method?
A: 30% as advance payment, and the remaining balance to be paid off before shipment.
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