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

In order to better serve our customers, our company's official website of lpg products has been released recently. For more information on lpg and related products, please visit http://www.seficlpg.com Our trademark is SEIFC(Shanghai Eternal Faith Industry Co.,Ltd).We are one of the largest manufact