... PIPESCERTIFICATEISO9001:2008STANDARDAISI, ASTM, DIN, GB, JISAISI, ASTM, DIN, GB, JISAISI, ASTM, DIN, GB, JISAISI, ASTM, DIN, GB, JISGRADE201,202,304,304L,316,316L,309s,310s201 ... ,202,304,304L,316,316L,309s ... securely tied around belly of coil at about equal distance. 304 316 stainless steel bar