(1) ISO 9001certificate (2)SAE/DIN standard (3) professional manufacture (4) high quality and inexpensive Features: high pressure, fireproof, adiabatic, tube body beautiful anticorrosion, antistatic, high wear-resisting, light weight,resist low temperature, high temperature resistant bending good performance and long service life.uses: oilfield well control operations,metel smelting and chemical ...