3PE coated steel pipe according to standards API 5CT, API 5L, API 5LD, ... transfering oil, gas, water in oil field 3PE coated steel pipe, WITH THREE LAYERS OF POLYETHYLENE (3PE) TO ANTI-CORROSION, FOR OIL ... OUTSIDE DIAMETER FROM 21.3mm to 1220 mm.3PE COATED STEEL PIPE CAN BE WIDELY USED IN GAS OIL CHEMICAL MINE ... TRANSPORTATION RESISTANCE.CERTIFICATE: ISO9001, UL, FM, CE, API 3PE coated steel pipe API 5L