... gas pipe, API pipe, alloy steel pipe, carbon steel pipe and so on.Steel sheetmaterialDC01,SPCC,ST12,HJ58,HG60,DB685 ... ,Satin,Mirror,Vibration,Bead Blast,EmbossedThe stainless steel pipestandardASTM,GBmaterial201,202,301,304,316,316L, ... pickling and so onProduction technologySeamless steel pipeWelded steel pipeSurface treatmentPolishing or notThe stainless steel barstandardASTM,GBmaterial201,202,301,304 ...