... , 304, 304L, 316, 316L, 317, 317L,310s 2) Standards: GB/ASTM/ASME/DIN/JIS 3) TPI:SGS,BV. Stainless Steel Tube ... .8mm-25mm2) Grade : Grade :Inconel 600,625, 321, 304, 304L, 316, 316L, 317, 317L,310s etc3) Standards: /ASTM/ASME/DIN/JIS and etc ... , 304, 304L, 316, 316L, 317, 317L,310s,904L etc.standard/ASTM/ASME/DIN/JIS and etccertificateISO,SGS,and third part inspection ...