China Glass Lined Pipe Fitting

China Glass lined pipe fittings are important components widely used in industrial production and scientific research in chemical,petrochemical,pharmaceutical,dye,pesticide,food manufacturing,national defense,and other industries that require corrosion resistance and cleanliness.The production process of glass lined pipe fitting mainly includes the following steps:
1、Substrate preparation

Choose suitable metal pipes as the base material,commonly including steel pipes,cast iron pipes,or stainless steel pipes,to ensure that the surface of the base material is smooth,free of rust,oil stains,and other impurities.According to the design requirements,metal pipes are cut and formed,such as bending pipes,welding pipeline components,etc.

2、Preprocessing
Sandblasting treatment is carried out on the surface of the substrate to remove surface dirt and oxide layer,and improve the bonding strength between the enamel glaze and the metal substrate.Further acid wash the substrate to ensure a clean and impurity free surface,preparing for the subsequent coating process.
3、Coated enamel
Select high-quality enamel glaze to ensure it has good corrosion resistance and wear resistance.Uniformly apply enamel glaze on the inner wall of metal pipes,usually by immersion,spraying,or brushing.During the coating process,it is important to ensure that the glaze is evenly distributed to avoid any omissions or uneven thickness.
4、Firing
Send the metal pipes coated with enamel glaze into a high-temperature kiln for firing.During the firing process,temperature and time must be strictly controlled to ensure that the enamel glaze is tightly bonded to the metal substrate,forming a strong enamel layer.After firing,let the pipeline cool naturally to room temperature.During the cooling process,sharp temperature changes should be avoided to avoid affecting the performance of the enamel layer.
5、Inspection and Testing
Inspect the appearance of the fired enamel glass pipeline to ensure a smooth surface,no cracks,no bubbles or other defects.Measure the thickness of the enamel layer using professional tools to ensure compliance with design requirements.Conduct corrosion resistance testing to ensure that glass lined pipelines can be used stably for a long time under harsh working conditions.
6、Assembly and tightness test
Assemble qualified China glass lined pipe fittings to ensure reliable sealing at the connections.Conduct a tightness test on the assembled glass lined pipeline to check for any leaks.
7、Factory inspection
Conduct final inspection on glass lined pipelines to ensure that all performance indicators meet relevant standards and customer requirements.Pack the glass lined pipes that have passed inspection and prepare for shipment.
In addition,some manufacturers such as Wuxi Qianqiao Chemical Machinery Co.,Ltd.also use cold spray technology for production.Cold spraying requires workers to repeatedly grind and refine the raw material and enamel powder,and ensure that the moisture in the enamel powder is dry.Under this technology,the China glass lined pipe fitting are fired multiple times,with a uniform thickness of the porcelain layer.The enamel glass layer is tightly bonded to the metal substrate,making it less prone to dark bubbles and detachment of the entire porcelain surface.
In summary,the production process of glass lined pipe fittings is a complex and delicate process that requires strict control of the quality and technical parameters of each link to ensure that the performance and quality of the final product meet relevant standards and customer requirements.