... producing stainless steel pipes, the main material: 304,304 L, 301,321, AF316L, 2520 .... The company specializes in producing stainless ... steel pipes, the main material: 304,304 L, 301, ... diameter: 20*20 - 120*120 , the thickness is 1.5-10. Welcomed the call letters ordering!stainless steel seamless tubematerialStandardφ6*1 ...