... Microalloy,HP-Nb+MA,G1.4852 3.ISO9001:2008 S+C G1.4852 Catalyst Tubes GradeC Si MnCr Ni Nb ... .0-37.00.7-1.5<=0.03<=0.03Ti+Zr(microelement ) 1.Standard:ASME,ANSI,ASTM,DIN,GB2.Material: ... Shanghai,Dalian;Qiangdao etc.9.Certification:ISO9001:200810.Payment:L/C,T/T11.Application:Used in Petrochemicals level, have Excellent ... of growth is essential for safe plant operation. S+C G1.4852 catalyst tubes