Xi'an Xuanfa Stainless Steel Co.,Ltd is one of the professional manufacture of ASTM A312 TP317 Stainless Steel Square Pipe,Website:://.xf-stainless-steel.com,TP317 SS pipe,TP317 SS seamless pipe,ASTM A312 tp317L stainless steel welded pipe, TP317L stainless steel pipe,TP317L stainless steel tube ,ASTM A213 TP304 stainless steel pipe,ASTM A249 TP316 stainless steel pipe, TP317L stainless steel pipe. Products: ASTM A312 TP317L Stainless Steel Square Pipe Process:Hot Rolled and Cold Rolled, Seamless and Welded OD:15*15mm-600*600mm;20*30mm-600*800mmThickness: 0.3-15mmLength:1-6m Surface treatment: 180#,240#,320# hairline, 400#,600# mirror polish Application: 1.General industries:petroleum,food,chemical,paper,fertilizer,fabric,aviation and nuclear .2.Decoration field :handrail,railing,staircase,screen,door,window,balcony,fence,bench, furniture.3.Fluid, gas and oil transport4.Pressure and heat transmission5.Construction and ornament6.Boiler heat exchangers.Chemical composition: Cr:18.0-20.0%  Ni:11.0-15.0%