ISO4144 Natural Gas Pipe Fittings Bushing Variable Diameter Union Connector Fittings

Describe  of pipe fitting Variable diameter fitting bushing

China Styles ISO4144 Pipe Fitting Variable Diameter Fitting Bushing  

• The producer try to improve the function of the material , control the annealing process, strictly , adopting the high heat value nature gas annealing furnace.
   
• In order to make sure no leakage on the surface of the pipe fitting bushing , the producer use air-tight test .
   
• We use the equipments come from DISA Denmark, DJ AMF Japan, SINTOKOGIO Japan production line to produce the goods , in order to make sure the quality of products are good.
   
• The reason why the maker use Oxford Instruments to test is to make sure the quality of material of the casting sample is good .

What lead to coatings failure:

Barrier coatings are the most commonly used protective mechanisms for cast iron. Some type of coating (such as a wax, paint or metallic coating) should probably be considered an integral feature of cast iron in service. The absence of such a coating, or a failure in an existing coating should be corrected. Inspection should include a visual examination of all surfaces to determine if a coating exists, a fact which may be very apparent for opaque paints and coatings but substantially less apparent for clear lacquers, waxes or oils. Surfaces having the appearance of raw metal should be carefully examined for signs of rusting. Absence of a coating should be considered a major problem and corrective action should be undertaken. See individual repair or preventive maintenance procedures for specific guidance as needed.

Look up table of malleable iron pipe fittings