... cracking tube, seamless steel tube ,seamless steel pipe,ASTM A106 seamless carbon steel pipe for high temperature service,seamless steel tube, ... requirementSIZE: 1/8" to 24"W.T SCH 5, SCH 10, SCH 20, SCH 40, SCH 80, SCH 160,SCH XXS API Seamless Steel PipeWe supply all kinds ... pipe6. spiral steel pipe7. square steel pipe8. hot-galvanized steel pipe standard: API5CT, API5L, ASTM, JIS, DIN, GB , and so ...