... ,XXS Standard:ASTM,ASME,DIN,JIS Certificate:API,ISO,CCS STD steel seamless pipe ProductionSteel pipeTypeSeamless and ERWSize1/2" To 24 ... of advanced paymentCertificateAPI, CCS,and ISO9001:2000Productivity200000 ton per yearKeywords:STD steel seamless pipe,steel pipe,carbon steel seamless pipe