... :1.Round pipe 2.Square pipe 3.Rectangular pipe 4.Oval pipe 5.Welded pipe 1.Our products are as following:(Unit:mm)Round pipe:Dia.20 ... ,Dia.22.2,Dia.25.4 ... ,Dia.76,Dia.83,Dia.89Square pipe:16X16,19X19,20X20,22.2X22.2,25.4X25.4,30X30,40X40,45X45,50X50,60X60,70X70and ...