Price discrepancies are common in the procurement of anti-corrosion steel pipes. This is mainly because the final price is affected by multiple factors, including the type of anti-corrosion treatment, the base pipe itself, specifications, procurement volume, and market transportation.
The cost of basic seamless pipe and welded pipe substrates is relatively transparent, with limited price differences. The main fluctuation range comes from the materials used for anti-corrosion coatings and the construction process. Even for the same type of corrosion protection, different grades can have vastly different prices.
For example, the price difference between ordinary and reinforced 3PE anti-corrosion coatings (thicker polyethylene layer, stricter requirements) can be more than double. The cost of anti-corrosion coating processing varies depending on the process and materials. Standard anti-corrosion construction includes multiple processes such as pipe pretreatment, rust removal, primer, and topcoat. Reputable manufacturers strictly follow the standards for rust removal, ensuring that the coating thickness meets the requirements and the anti-corrosion service life meets the design life.
Some factories simplify the rust removal process by directly applying anti-corrosion materials. However, the coating has insufficient adhesion, and after only a few years of underground use, the coating peels off, and the pipes quickly rust and leak. Although the purchase price is lower, the pipes are repaired and replaced in advance, which significantly increases the long-term maintenance cost.
When requesting quotations, specify all parameters, including the base pipe material, pipe diameter and wall thickness, type and thickness of the anti-corrosion coating, and applicable standards, to ensure that quotations from different suppliers are based on the same standard.

Time：05/08/2026 16:54:09

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