good price ,good quality We are manufacturer of stainless steel pipes. Have 8 years in exporting. Xinya , you should be dependent ... and service.Standard:Strictly follow the ASTM A 554 and others.Features:1) Material of stainless steel: grade: AISI 201, 304 4302 ... ,30x30,36x36,38x38,40x40,48x48,50x50,60x60,70x70,80x803)Rectangular pipes - Outside dimensions(mm) : 20x10,23x11,24x12,25x13,28x13,30x15, ...