... ,carbon Standard:ASME,BS,GOST,etc API,ISO,CE,etc pipe fittingsSize -- Seamless:from 1/2" to 24" ,Welded:from 24 ... -- Direct reading light spectrum, hydrostatic test ,X-ray detector,ultrasonic flaw detection ,magnetic powder detector ,etcQualification-- API ,CE ,ISOPacking-- in wooden cases ... , construction, etcSpecial design available as the requirement of customer] seamless pipe fittings SCH40