... Steel Tube 1) Grade : 321, 304, 304L, 316, 316L, 317, 317L,310s 2) Standards: GB/ASTM/ASME ... /DIN/JIS 3) TPI:SGS,BV. Stainless Steel Tube Features:1) pipe diameter ... , 316L, 317, 317L,310s etc3) Standards: /ASTM/ASME/DIN/JIS and etc 4) Applications range: ... steel tube size6mm-630mm pipe thickness : 0.8mm-25mmgrade321, 304, 304L, 316, 316L, 317, 317L,310s,904L etc.standard/ASTM ...