Cold Rolled Seamless Steel Tube Cold drawn or cold rolled precision seamless steel tubes Features: 1) Standard:supplied by customers 2)Grade: 10# 20# 35# 45# and so on. 3) Sizes: O.D :10mm- 120mm; W.T:1~15mm 5) Packing:hexagonal bundle packing ,case packing,both end are potected by plastic caps or others 6)Production condition:GKZ+K GKZ+K+G GKZ+K+GBK GKZ+KP+SZ 7)All steel tube can test Ultrasonic flaw detector ,eddy current flaw detector ,and Magnetic detector depend on costomers requirement 8)We can supply the certificate of the EN10204 3.1or PPAP documents and the Form A