SEFIC wishes everyone a Happy New Year! !! !!

The first category is steel or aluminum alloy metal bottles (CNG-1);The second type is composite steel gas cylinders (CNG-2) reinforced with steel or aluminum lined with barrels and impregnated with long-fiber resin.The third type is a composite gas cylinder (CNG-3) reinforced with steel or aluminum

The diameter of the tube can be divided into outer diameter (De), inner diameter (D), and nominal diameter (DN).Note: This is neither the outer diameter nor the inner diameter, but the average of the outer diameter and the inner diameter, called the average inner diameter.When the design uses the no

we are family