Drill String Cross-over Sub uses AISI4145H chromium-molybdenum steel, execute API specification.We can produce the same-dia type, reducers type and L-type three types, the screw can be cold thread rolling, copper or phosphate treatment.
ASTM 6150 steel round bar under ASTM A29 standards and it is a fine grained, highly abrasion resistant carbon-chromium alloy steel. More informational about ASTM 6150 steel round bar, please see the following.
If you are looking for suppliers of GB/T700 Q235B steel plate , or do not know how to choose a suitable own supplier of GB/T700 Q235B steel plate, please contact us in time, we have a lot of good customer feedback of GB/T700 Q235B steel plate
35CrMo hot rolled round bars and forged round bars is belongs to alloy structural steel under the standard of GB/T3077-1999, More information about 35CrMo hot rolled or forged round bar,please see the following.