The company specializes in producing stainless square pipe, the main material: 304,304 L, 301,321, AF316L, ... 2520 l... The company specializes in producing stainless square pipe, the main material: 304,304 L, 301,321, AF316L ... , 2520 and so on.The specification as follows:Stainless steel square pipe20*20*1.5-360*60*4-625*25*1 ... -4100*100*5-1050*50*3-5120*120*6-10 square tube