We Super Steel Manufacturing Co.,Ltd(SMC) are amongst the top manufacturers and suppliers for the seamless steel pipe, welded steel pipe, OCTG products and fittings from China. We have been manufacturing and supplying these products to the industry since 1993, and received repeat orders and appreciation from our valued customers.
High quality piping products from approved manufacturers.
In order to continuously improve our offerings to our clients, we have consistently improved and upgraded our manufacturing facility and can hence offer material with stringent requirements.
Over the years, Super Steel Manufacturing Co.,Ltd(SMC) has developed an enviable reputation for project management for the Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical and other heavy industries.
The many years of experience that we have means that there is always someone who has the ability to carry a project forward.
Always up to date. In this column you can find the steel pipe related articles, including industry trends, product standards and materials, and some technical guidelines.
Plastic-coated steel pipes are widely used in industries requiring both the strength of steel and the corrosion resistance of plastic. To ensure a secure, durable, and leak-proof connection, proper preparation and installation methods must be followed. Below outlines the recommended steps and connection techniques.
Super Steel Manufacturing Co.,Ltd is professional plastic-coated steel pipes manufacturer, for more details, please contact:sales@super-steels.com
Preparation Before Connecting Plastic-Coated Steel Pipes
Deburring After Cutting
After the pipe is cut, any metal burrs at the end should be carefully removed using a fine file to ensure a clean surface.
Chamfering the Plastic Coating
Use a specialized reamer to chamfer approximately half the thickness of the plastic coating. The chamfer angle should be between 10° and 15°.
Edge Treatment
If the coating at the pipe end is intact, use a sharpener to cut a smooth chamfer.
If the coating is damaged, apply repair solution until the entire coating is uniform and free of cracks.
Groove Repair
After grooving, any damaged areas of the plastic layer at the groove edge must be repaired. Ensure the coating is smooth and completely free of defects.
Cleaning
Clean the pipe ends and interior using cotton cloths and brushes to remove oil, moisture, and metal shavings.
Connection Methods for Plastic-Coated Steel Pipes
Threaded Connection
Use an automatic threading machine to create threads. All threading should comply with current national standards.
Flanged Connection
Primary Installation: Measure and design the pipeline on-site, then prefabricate the pipes. After coating and lining, transport them to the installation site.
Secondary Installation: Assemble uncoated and unlined steel pipes and fittings on-site, weld the flanges, disassemble, and then apply the coating and lining before final installation.
Grooved Connection
Use prefabricated, grooved plastic-coated fittings. Grooves should be made using a dedicated groove-rolling machine, and the depth must meet standard specifications.
English
Español
Français
بالعربية
