Standard:DIN2391/C/EN10305-1
Material:ST35,ST37.4,ST37,ST45,ST52,ST52.4,E235,E255,E355,SAE1010,SAE1020
OD:6MM-16MM,WT:1-15mm
Delivery State:NBK/GBK.
Raw material:Bao Steel,Huai Steel,XingCheng Steel with good quality.
Length:5.8m,6m.
Package:Bundles or wooden cases.
Surface Anti-rust:Both outside and internal tube surface flushing with anti-rust oil.
Surface quality:very smooth and bright without oxide scale,pock,strach,crack and other defects..
High working pressure,better extending rate and strength property,after bending with no deformation,after flattening and flaring process with no crack.
Test:Tensile Strength Test,Flaring and flattening test ,Hardness Test,Chemical Compositon Test
| Steel grade | ChemicalComposition( % ) | ||||||
| Steel name | Steel number | C max | Si max | Mn | P max | S max | Al min |
| E215 | 1.0212 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 | - |
| E355 | 1.0580 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 | - |
| Steel grade | Minimum values for thedelivery condition | ||||||||||||
| Steel name | Steel number | + C | + LC | +SR | + A | + N | |||||||
| RmMpa | A% | RmMpa | A% | Rm Mpa | ReHMpa | A% | ReH Mpa | A% | RmMpa | ReHMpa | A% | ||
| E215 | 1.0212 | 430 | 8 | 380 | 12 | 380 | 280 | 16 | 280 | 30 | 290-430 | 215 | 30 |
| E235 | 1.0308 | 480 | 6 | 420 | 10 | 420 | 350 | 16 | 315 | 25 | 340-480 | 235 | 25 |
| E355 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 450 | 10 | 450 | 22 | 490-630 | 355 | 22 |
