National Gas authority inquiry coated 3mm with HD PE ,API 5L GRB erw pipes

Oman company to buy SEAMLESS Tube for steam boiler 13CrMo44 (1.7335)
March 29, 2018
Iranian petrochemical projects : A335 ,A312 ,A106, A53 Gr. B SMLS PIPE
March 30, 2018