ASTM A519 4147 steel pipe 

Steel Grade: 4145  Out Diameter: 219-914mm ( 8"-36"), tolerance: ±1% Wall Thickness: 9.53-80mm 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 ASTM A519 standard  Yangzhou 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 gas cylinder steel pipe and mechanical steel pipe according to the ASTM A519 standard. In recently 10 years, we have been produced and sold about 200000 tons 4130, 4140, 4142, 4145 and 4147 steel pipe to China, Korea, South East…