1. The logo of the 3pe anticorrosive steel pipe manufacturer should be eye-catching, firm, clear, standardized, and not easy to fade.

　　2. The logo should include at least the following: the name and trademark of the manufacturer of 3pe anticorrosive steel pipe, product standard number, and steel pipe brand. For precision 3pe anticorrosive steel pipes, main performance indicators and dimensional precision levels can be added.

　　3. The standard department adopts methods such as printing, stamping, rolling, printing, sticking imprints, or attaching labels, tags, etc., and the supplier can hang one or more marking methods

　　4. The steel pipe with an outer diameter of not less than 36mm should start at a distance of not less than 200mm from one end of the 3pe anti-corrosion steel pipe, and the marking method must be carried out for each.

　　5. For low-pressure fluids, 3pe anticorrosive steel pipes, thin-walled 3pe anticorrosive steel pipes, thick-walled 3pe anticorrosive steel pipes and other general-purpose 3pe anticorrosive steel pipes, heterogeneous section 3pe anticorrosive steel pipes, and complex section 3pe anticorrosive steel pipes may not be marked for each

　　6. The pipe joints of 3pe anticorrosive steel pipes for petroleum, gas, 3PE anticorrosion and other purposes should have the brand mark of Hebei 3pe anticorrosive steel pipe.

　　7. In the case of container packaging, bracket welding packaging or a set of thin-walled 3pe anticorrosive steel pipes. A label or tag should be attached to the outermost 3pe anticorrosive steel pipe of the container, support, and suit of thin-walled 3pe anticorrosive steel pipe.