It has an internal and external roller structure with roller-leading oil in between. Heating pipes are scattered around evenly. It has various structures, including hollow, single-layer, double-layer and drilled.
Steel Grade: ST52/E355
Production Standard : EN 10305 E355+SR /DIN2391 ST52+BKS
Inside Diameter Tolerance: H7 - H9
Inside Surface Finish: Ra 0.3 Micron, or better.
Straightness between 0.2-0.3mm/meter.
ID: 30-1200mm.
WT: 3-100mm.
Both ends capped and oiled in bundle, suitable for shipment
Suitable for harsh and corrosive environments, the chrome-plated bar is designed to meet salt spray testing.
Material:Sae1045/S45c/CK45/ G4105, SCM440, SAE4140, 42CrMo4, 2Cr13
Outer Dia Precision : ISO f7
Hard-Chrome Thickness: 20 Micron Min (or do as per buyer request)
Straightness: 0.2/1000mm.
Ovality : < 0.01/L
Weld Ability: Good
in paper sleeve and boxed, or as per buyer's request
Seamless steel tube
In bundle, or as per buyer's request
