... name api 5l x 52 carbon steel pipes Material45#,20# carbon steel20cr,40Cr,20CrMo low alloy steel Making process cold-rolled ... ,DIN2391Grade10#,20#,45#,16Mn,ST35-ST52,low alloy steel Size OD18-121mm, thickness 2-25mmPlace of originLiao ... cheng city Jin shan steel pipe Co.,LTD in Shandong provinceour web www. ... cylinder JS brand API 5l x 52 carbon carbon steel pipe ,