... STPA12/ STPA20......OD2" to 32"WT 2mm-60mmLENGTH4M to 12MApplicationConstruction,Oil & Gas, Petrochemical,Water pipeline,Sewage Treatment, Transmission pipelinePacking1Packing in bundles2Surface: Varnish ... Piping,Oil,Gas ,Construction/Structural, Chemical, Electricpower,Transmission pipeline, Boiler pipe, heat exchanger pipe and Other Fields. Products Advantage1Large holding enterprise group, ...