Place of origin:jiangsu, china (mainland) Brand name:lifeng Size:customized according to drawings Type:tubesheet Application:heat exchanger parts Certification:iso9001:2008, en10204:2004 3.1 Material:carbon steel & alloy steel (astm a516 gr.70, astm a105, astm a266 gr.2, astm a182 f1, f2, f5, f9, f11, f12, f22, f6a, f6nm, f91, astm a350 lf1/lf2/lf6).