... Steel Seamless Pipe 304 : 1.Class:Steel pipe series 2.Model:301, 304, 304L, 321, 316, 316L and 310S 3.Size:(6mm ... (1-20)mm. Other sizes available upon customers' requirements2) Grade: 301,304, 304L, 316, 316L, 316TI, 317, 321, 321TI3) Standards:a ...