Steel Grade: X10CrMoVNb9-1 Out Diameter: 219-1422 mm ( 8"-56"), tolerance: ±1% Wall Thickness: 9.53-140mm Length: 6-11.8Meter Seamless steel pipe Surface: bare, black varnish or light oiled Pipe End: Plain or Beveled (Can be Protected By Plastic Pipe Cap) NDE: UT, ET or Hydraulic testing Straightness: WT<30mm, not more than 2mm per meter WT≥30mm, not more than 3mm per meter Others: According EN 10216 standard angzhou Chengde (YC) is one of the best steel pipe manufacturers in the world, and the production diameter from 8" to 48" in OD and wall thickness from 9.53 mm up to 140mm. We can produce the boiler steel pipe and thermal power steel pipe according to the EN10216 standard. In recently 10 years, we have been exported about 100000 tons 10CrMo5-5, 10CrMo9-10, 13CrMo4-5, 15NiCuMoNb5-6-4, X10CrMoVNb9-1 and X10CrWMoV…