Main production?Stainless Steel Seamless / welded Pipes and Tubes and pipe fitting; Bright annealed ss pipe / precise colling pipe Main material grade: TP304, TP304L, TP316L, TP316Ti, TP321, TP310S, TP347H,S31254,TP904L, TP316H,TP410,TP446,TP430,32750,32760,S31803 etc. Main production standard : ASTM A312 /A268/ A269 / A270/A213 / A358 A789/A790/ A403 / A234 / A554 / A249 GB/DIN/JIS Mr Mark Kim skype :srsteelpipe mail:srpipe(a)hotmail.com