Price of 3PE anti-corrosion seamless steel pipe

Description :

　　3PE anti-corrosion steel pipes are used for natural gas transportation, and straight seam steel pipes and seamless steel pipes are used as substrates to produce anti-corrosion steel pipes. 1. Three layer polyethylene (3PE) steel pipes are used for oil and gas anti-corrosion. Implement the SY/TDIN standard for FBE (single-layer fusion bonded epoxy powder anti-corrosion) and 2FBE (double-layer fusion bonded epoxy powder anti-corrosion) for petroleum and natural gas. Implement the SY/T standard for cement mortar fabric anti-corrosion of steel pipes for water supply pipelines. Implementation standard: CS10: IPN8710 for water supply pipelines. Polymer non-toxic coating for internal anti-corrosion of steel pipes. 5. Epoxy coating for water supply pipelines, non-toxic coating for drinking water equipment, and anti-corrosion coating for steel pipes. 6. Epoxy coal tar wrapped fiberglass steel pipe for corrosion prevention. Implementation standard: SY/T various types of heavy-duty anti-corrosion coatings for steel pipe anti-corrosion. 8. Thermal pipeline steel pipe insulation 3PE anti-corrosion steel pipe. (Polyurethane foam insulation layer) This product is widely used and suitable for anti-corrosion of steel structures and mechanical equipment in marine equipment, petrochemicals, construction operations, and other industrial and mining enterprises, as well as various storage tanks, transportation pipelines, and other steel materials. The anti-corrosion steel pipe products include: 2PE/3PE reinforced anti-corrosion steel pipe, 2PP/3PP anti-corrosion steel pipe, single-layer epoxy powder anti-corrosion steel pipe, epoxy coal tar anti-corrosion steel pipe, IPN8710 drinking water pipeline inner wall anti-corrosion steel pipe, steel pipe cement mortar fabric anti-corrosion steel pipe, and high-density polyethylene coated steel pipe. The base materials are all seamless steel pipes, spiral steel pipes, and straight seam steel pipes from major steel mills such as Baosteel, Tianjin Seamless, and Baosteel, providing customers with high-quality 3PE seamless anti-corrosion steel pipes (reinforced grade), 3PE spiral anti-corrosion steel pipes (reinforced grade), 3PP seamless anti-corrosion steel pipes, 3PP spiral anti-corrosion steel pipes, and other anti-corrosion steel pipes Anti corrosion steel pipes are widely used in pipeline engineering fields such as petroleum, chemical, natural gas, thermal, sewage treatment, water sources, bridges, and steel structures in China. We are committed to becoming the world's leading supplier of anti-corrosion steel pipes, guided by the central values of "innovation and opening up", "reducing resources", and "serving the world with integrity".

　　Implementation standards: DIN30670, DIN30671, SY/TSY/TT/TSY/TC110:89, CJ/TCJ/TCJ/T. This product is widely used in steel structure equipment, various storage tanks, transportation pipelines, and other industrial and mining enterprises in marine equipment, petrochemicals, construction operations, and other industries. The anti-corrosion benefits of 3PE anti-corrosion steel pipes for petroleum pipelines include light bulk density, high strength, insulation, sound insulation, flame retardancy, cold resistance, anti-corrosion, non water absorption, and cumbersome construction. It has become an indispensable material for insulation, anti-corrosion, waterproofing, sealing, and other industries such as construction, transportation, oil, chemical, power, refrigeration, etc. 3PE anti-corrosion steel pipe is used for anti-corrosion and cold insulation engineering of various indoor and outdoor pipelines, heating pipelines, local air conditioning pipelines, chemical and other industrial pipelines. Overview: Since the emergence of 3PE decomposition materials in the 1930s, 3PE foam anti-corrosion pipes have been widely used as a superior insulation and anti-corrosion material, and their application fields have become increasingly extensive. Due to their cumbersome construction and clear energy-saving and anti-corrosion effects, they are widely used in various pipelines such as heating, cooling, oil transportation, and steam transportation. Used in large quantities for various pipelines such as heating, cooling, oil transportation, and steam transportation. 3PE anti-corrosion steel pipes for oil pipelines have high pressure function, so our manufacturers have always paid special attention to them.

　　The evaluation of the anti-corrosion function of 3PE anti-corrosion coating in China is very good, but there are few reports on the defects that occur during its use. The primary defects reported include peeling, cathodic peeling, cathodic protection shielding, and corrosion under the peeling anti-corrosion layer film. Moreover, most of the reports related to defects are still in the theoretical estimation stage, such as the issue of cathodic protection shielding mentioned in the material guess. So far, there have been no case reports on the practical operation of cathodic protection shielding in the anti-corrosion layer. Through years of practice, it has been shown that with the increase of service life, the coating system with fewer defects is the FBE/kneaded polyethylene 3-layer structure anti-corrosion system. Through reviewing the 30-year application history of polyethylene anti-corrosion coatings in Europe, although theoretically corrosion or stress corrosion cracking may occur under the peeling of anti-corrosion coatings, there have been no cases of under film corrosion or stress cracking under the peeling of anti-corrosion coatings so far. At the Mannesmann Institute in Germany, long-term corrosion laboratory tests were conducted to simulate the application of anti-corrosion coatings. The corrosion test environment includes soil, water, and the primary inspection for stress corrosion cracking. The anti-corrosion test involves placing defective polyethylene coated steel pipes under corrosion and stress conditions. The corrosion environment is a sandy soil environment containing NaHCO3, with a temperature of 70 ℃ and a pipe to ground potential of -430~-460mV. The steel pipe surface is pre treated using different methods, and all steel pipes are subjected to pressure cycling. At the end of the experiment, there was more or less peeling around the defects in the anti-corrosion layer, but the peeling area was found to be corroded. The steel pipe without surface oxide scale showed stress cracking, while the steel pipe with oxide scale showed cracking with a depth of 0.2mm, possibly caused by stress corrosion. From this, it can be concluded that thorough surface treatment is a useful method for preventing stress cracking. The Shaanxi Beijing pipeline excavated a 763m long section in 2003, and there were four damaged points on the 3PE anti-corrosion layer. The defect method of oil damage points shows that the damage to the anti-corrosion layer is caused by scratches from hard objects. Three test pits were inspected for 3PE straight pipes and cold-formed pipes, and a total of 17 peel strength tests were conducted. Among them, 5 peel strength values were below 70N/cm, * small peel strength N/cm, * peel strength 200N/cm. The reason for the occurrence is that the Shaanxi Beijing pipeline is the first domestically selected 3PE coating technology, and the coating level of the coating company is limited, resulting in relatively poor control over the process engineering. This may have led to improper coating process settings for individual pipelines, resulting in poor adhesion of the anti-corrosion layer. The low peeling strength of the anti-corrosion layer is only a single part, and as long as the anti-corrosion layer is not damaged, it will not cause pipeline corrosion.

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