API 5L X70 boiler seamless steel pipe 1) Standard:API 5L,ASTM 36.10M,A106 ... 1626,BS,JIS.etc API 5L X70 boiler seamless steel pipe1) Standard:API 5L,ASTM 36.10M,A106, ... ,35, API 5L GR. B /X42/X52.etc3) Size: OD 1/8”to 48” (10.3mm-1219.2mm ... Surface treatment:bare,black painting,anti rust oil,hot dipped galvanized,3pe,etc8) Length: 5.8 meters for 20' ... ,,metallurgy,etc API 5L X70 boiler seamless steel pipe