En10305-1 En10305-4 DIN2391 St37.4 St52.4 Od6mm 8mm 18mm Cold Drawn Hydraulic HPL Black Phosphated Galvanized Cr6 Free Precision Carbon Steel Tube



| COLD DRAWN SEAMLESS STEEL TUBE | |||
|---|---|---|---|
| Standards | Sub-Standard | Steel Grades | Size Range |
| DIN | 2391 | ST35/45/52 | OD2 - 60mm × WT0.3 -10mm |
| 1629 | ST37/44/52 | OD2 - 60mm × WT0.3 -10mm | |
| 1630 | ST37.4/44.4/52.4 | OD2 - 60mm × WT0.3 -10mm | |
| 2445 | ST35/ST52/ST37.4/52.4 | OD2 - 60mm × WT0.3 -10mm | |
| EN | 10305-1 | E215/235/255/355 | OD2 - 60mm × WT0.3 -10mm |
| 10305-4 | E215/235/255/355 | OD2 - 60mm × WT0.3 -10mm | |
| ASTM | A519 | 1010/1015/1025/1045/4130/4140 | OD2 - 60mm × WT0.3 -10mm |
| JIS | G3445 | STKM11A/12A/12B/13A/S45C | OD2 - 60mm × WT0.3 -10mm |
Delivery conditions: BK (+C) BKW (+LC) BKS (+SR) GBK (+A) NBK (+N)
Major Inspection Items: Tensile strength, Yield strength, Elongation, Flattening, Flaring, Chemical analysis, Eddy Current Test 100%, Size and surface checking 100%.
Certificates: According to EN 10204 3.1
The group operates two specialized manufacturing facilities. One produces steel forgings for Marine, Power, Boiler, Ocean, Oil, Petrochemical, Mechanical, and Hydraulic fields. The other focuses on precision steel tubes for the automotive industry and hydraulic systems. A dedicated semi-independent division handles import and export operations.
With a total area of 150,000 square meters and over 200 employees, the facilities ensure quality through a double-inspection process. Products undergo rigorous testing by professional quality controllers, and customers receive detailed reports for all tested items. We adhere to the principle of "Quality Foremost" and strive to serve global customers with full commitment.