Cleaning plastic-coated composite pipes is very important!
Release time:
2021-10-28
The maintenance of coated composite pipes involves a cleaning and flushing step, so the flushing procedure is particularly important. So how can we carry it out effectively? The following manufacturer of coated composite pipes has already outlined some details in this regard—let’s all take note and learn from them.
Plastic-coated composite pipe The repair process involves a cleaning and rinsing step, so the rinsing step is also very important. So how can we carry it out effectively? The following manufacturer of coated composite pipes has already outlined some details on these aspects—let’s all take note and learn from them.
The cleaning of plastic-coated composite pipes should be performed using solvents and emulsions to clean the steel surface, removing oil stains, grease, dust, lubricants, and similar organic substances. However, these cleaning agents cannot remove rust, oxide scale, welding flux, or other similar contaminants from the steel surface; therefore, they serve only as auxiliary agents in corrosion prevention processes.
Rust removal: Using tools such as wire brushes to grind the steel surface can remove loose or lifted oxide scale, rust, weld slag, and other contaminants. Manual tools can achieve a Sa2 grade of rust removal, while power tools can reach a Sa3 grade. However, if the steel surface is covered with firmly adhered oxide scale, the rust removal effect will be unsatisfactory and will fail to meet the required anchor profile depth for corrosion protection work.
Pickling: Pickling typically employs chemical and electrolytic methods. Chemical pickling is used exclusively for pipeline corrosion prevention; it can remove scale, rust, and old coatings. Sometimes, it can also serve as a secondary treatment following sandblasting for rust removal. Chemical cleaning can achieve a certain level of cleanliness and surface roughness, but its anchor profile is relatively shallow, making it prone to contamination.
Blast (or Shot) Rust Removal: Blast (or shot) rust removal refers to a process in which a high-power motor drives blast (or shot) blades to rotate at high speed, causing abrasive materials such as steel grit, steel shots, wire segments, and minerals to be blasted (or shot) onto the outer surface of internally and externally coated pipes under the action of centrifugal force. This blast (or shot) rust removal not only thoroughly removes rust, oxides, and dirt but also achieves the required average surface roughness for both inner and outer coated pipes through the intense impact and friction exerted by the abrasive materials.
Recommended News
Advantages of anti-corrosion steel pipes
2022-09-19
What is TPEP anti-corrosion steel pipe?
2022-09-07
Let’s take stock of TPEP’s major advantages!
2022-08-18
Shisheng Tube-material Antiseptic
HOT LINE::
ADDRESS:
Puwacheng Industrial Development Zone,
Yanshan County, Hebei Province