3pe corrosion seamless steel pipe supplier base metal corrosion 3pe including seamless steel pipe, spiral pipe and straight pipe joints. Three-tier structure of polyethylene (3PE) anti-corrosion coating with good corrosion resistance, mechanical properties and water permeability gas, etc., in the oil pipeline industry has been widely used. 3PE anti-corrosion coating for steel pipes a lifetime of buried pipeline is critical, the same material of pipe buried in the ground for decades and some non-corrosive, and some years it leaks occur. Because they use different outer coating. 3PE preservative composition generally consists of three layers: a first layer of epoxy hybrid powder (FBE> 100um) a second layer of adhesive (AD) 170 ~ 250um third layer of polyethylene (PE) 2.5 ~ 3.7mm in the actual operation of three kinds of materials com, after processing so that the pipe to form a solid combination of excellent corrosion layer. The processing methods are generally divided in two and wound sheathed round mold. 3pe domestic implementation of anti-corrosion performance standards SY / T0413-2002 standard, with effect from August 1, 2002 implementation. Standard specification mainly oriented polyethylene and high density polyethylene, Vicat softening point to no less than 110 ℃; the thickness of the outer coating of the press to a low, medium density polyethylene-based German standards DIN30670-1991 to determine. Greatly improve the impact strength of 3PE coating. SY / T0413-2002 3PE coating will peel strength, impact indicators significantly improved and clearly defined, according to some of special carbon black content, to ensure that the mechanical strength and weather resistance 3PE coating, and to increase the mending Peel strength (ie, heat shrink, peel strength of steel primer shrink band) frequency sampling tests. 3PE anti-corrosion steel effect really is very broad coverage, which is suitable for coal mine drainage, underground shotcrete, positive and negative pressure ventilation, gas drainage, fire sprinkler pipe network. Thermal power plant waste process water, backwater pipeline. For anti-sprinkler, water sprinkler system piping has excellent applicability. Electricity, telecommunications, highways and other cable protection sleeve. Suitable for high-rise building water supply, heat supply network, water supply projects, gas transportation, underground water and other pipelines. Oil pipelines, chemical and pharmaceutical, printing and dyeing industry, transport process piping of corrosive media. Sewage discharge pipes, sewers and biological corrosion engineering pool. Agricultural irrigation pipe, deep pipes, drains, etc., etc. Internet use, it can be said 3PE anti-corrosion steel in the current building is essential, and I believe that through the extension of technology, it still has a more brilliant future results.