1.OD:3-630mm; 2.WT:0.5mm-30mm 3.Grade:304,304L,321,F321,316,316L 4.Standard:DIN,AISI,, ... .Supply:150000ton/year Product: Industrial Stainless Steel Seamless/Welded Pipe Material Grade: 304, 304L, 316, 316L, 321, 317, 317L, etc. Outside Diameter ... , and acquired certificates such as PED97/23/9CE/1997, third-grade metering, the People's Republic of China on the Administration ...