2. The mark shall include at least the following contents: the name and trademark of the 3pe anti-corrosion welded pipe manufacturer, the product standard number, the grade of the welded pipe, the product specification and the traceability identification number or telephone number. For precision 3pe anti-corrosion welded pipes, it can increase the main performance indicators and dimensional precision levels.
3, the standard section uses printing, stamping, printing, printing, pasting imprint or hanging labels, tags and other methods, the supplier can hang one or more logo methods.
4. The welded pipe with an outer diameter of not less than 36 mm shall be started at a distance of not less than 200 mm from the end of the 3pe anti-corrosion welded pipe, and the marking method shall be carried out for each.
5. 3pe anticorrosive welded pipe for general purpose 3pe anticorrosive welded pipe and thin wall 3pe anticorrosive welded pipe, thick wall 3pe anticorrosive welded pipe for low pressure fluid, 3pe anticorrosive welded pipe of opposite cross section, 3pe anticorrosive welded pipe of complex section, not every mark
6. Pipe joints of 3pe anti-corrosion welded pipes for petroleum, gas, 3PE anti-corrosion, etc., should have the grade mark of Hebei 3pe anti-corrosion welded pipe.
7. In the case of container packaging, bracket welding packaging or thin-walled 3pe anti-corrosion welded pipe. A label or tag shall be attached to the 3pe anti-corrosion welded pipe of the outermost layer of the container, bracket and set of thin-walled 3pe anti-corrosion welded pipe.
