The company specializes in producing stainless steel pipes, the main material: 304,304 L, 301,321, AF316L, 2520 and so on. ... The company specializes in producing stainless steel pipes, the main material: 304,304 L, 301,321, AF316L, 2520 and so on ... is 1.5-10. Welcomed the call letters ordering! Every material square tube20*20*1.5---360*60*4------625*25*1 ...