... -3000 2.WT:3-50 3.Material:GR.B 16mn Q235 Q345 ST35.8 STK500 ST52 RG ... DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISOmaterialCarbon steel(ASTM A234WPB,,A234WPC,A420WPL6. 20#,Q235,10#,20#,A3, ... ,321. 1Cr18Ni9Ti, 00Cr19Ni10,00Cr17Ni14Mo2, ect)Alloy steel(ASTM A234 WP12,WP11,WP22,WP5,WP9,WP91,16MnR, ... , API and became a member of first – grade supply network of State Power Corporation and China National ...