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Socket Leak Repair clamp Stainless steel

It plays a vital role in the maintenance of the pipeline system. The main body is made of stainless steel. The sealing rubber can be selected from nitrile rubber, EPDM rubber, fluororubber, silicone rubber. It is suitable for the socket part of the straight pipe and the repair of the pipe socket joint. The electric fusion leakage is wrapped up by the electric fusion, the whole hot fusion is wrapped up, corrosion-resistant, stainless steel material Repair clamp, corrosive socket pipe pipeline leakage, corrosion-resistant socket connection repair device, stainless steel socket connection Repair clamp

Common stainless steel grades:

304/L: General type, good corrosion resistance, the most widely used (food, water treatment, construction, general chemical industry). L means ultra-low carbon, and better resistance to intergranular corrosion after welding.

316/L: Contains molybdenum, significantly improves resistance to pitting and crevice corrosion, especially resistance to chloride ion corrosion. Used in marine environment, chemical industry, pharmaceutical industry, seawater desalination, bleaching agent environment, etc.

Duplex stainless steel (such as 2205/ S31803): High strength, strong resistance to chloride stress corrosion cracking and pitting, used in harsh environments (seawater, chemical industry, oil and gas).

Analysis of the causes of pipeline leakage:

1. Pitting: Halogen ions such as chloride ions are the main cause. They destroy the passivation film on the surface of stainless steel, form a corrosion cell with a small anode/large cathode locally, and quickly perforate. Common in chlorinated water, chemical media, and coastal atmospheric environment. 

Crevice corrosion: Occurs in areas with narrow gaps such as under flange gaskets, threaded connections, welds that are not fully penetrated, and contact points between pipes and brackets. The medium is retained and lacks oxygen in the gap, forming a concentration cell and accelerating corrosion. 

Galvanic corrosion: Stainless steel is in direct contact with a more active metal. In the presence of electrolyte, although stainless steel is protected as a cathode, it will accelerate the corrosion of the anode metal and cause leakage at the connection. It is also possible that when stainless steel contacts a more inert metal, stainless steel becomes an anode and is corroded.

Intergranular corrosion: Mainly occurs in the heat-affected zone of welding or after improper heat treatment. Chromium carbide precipitates at the grain boundary, resulting in chromium depletion near the grain boundary, and the grain boundary is preferentially dissolved in the corrosive medium. Commonly exposed to acidic media or chloride-containing environments.

Stress corrosion cracking:

One of the most catastrophic forms of failure. Brittle cracking occurs under the combined action of specific corrosive media and tensile stress. Cracks often extend along or through the crystals. There may be no obvious signs of corrosion on a macro scale, but they suddenly break and leak. Temperature increases significantly increase the risk.

Uniform corrosion:

Although stainless steel has good uniform corrosion resistance, it may also experience uniform thinning beyond expectations in environments such as strong reducing acids, strong oxidizing acids, or high temperature and strong alkali, resulting in insufficient strength and leakage. Wrong material selection is the main cause.

Field drawing