To protect power and communication cables laid in railways, highways, subways, municipal construction, and other system fields, when the cables pass through obstacles such as railways, highways, and rivers, cable protection tubes are generally added to the pipelines. At present, the cable protection
1. 3PE anti-corrosion steel pipe has high sealing performance, and long-term operation can greatly save energy, reduce costs and protect the environment.2. Strong corrosion resistance, simple and fast structure, and service life can reach 30-50 years.3. At low temperatures, PE has good corrosion res
At present, there are two standards for 3PE anti-corrosion steel pipes, namely GB/T 23257-2009 and GB/T 23257-2017. GB/T 23257-2017 is a new standard, implemented in December 2017. The two standards differ mainly in the following ways:3PE anti-corrosion steel pipe1. The design temperature of the ant
There are roughly four types of spiral pipes according to their uses: spiral pipes for drainage, spiral pipes for dredging, spiral pipes for piling, and spiral pipes for oil and gas.Spiral pipe for drainage: Material of spiral steel pipe for drainage: Q235A, Q23b, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9,
If the spiral steel pipe for water transportation is used to transport tap water or drinking water, the inner wall is usually made of IPN8710 non-toxic anti-corrosion coating, and the outer wall is made of epoxy coal tar pitch for anti-corrosion. Of course, it can also be used for inner and outer pl
As a terminal technical product of the steel pipe industry chain, anti-corrosion steel pipe has always occupied a very important position in the industry. In recent years, with the development and application of new anti-corrosion technologies for steel pipes, anti-corrosion steel pipes have become
①General boiler steel tubes are mainly used to manufacture water wall tubes, boiling water tubes, superheated steam tubes, superheated steam tubes for locomotive boilers, large and small smoke tubes, and arch brick tubes, etc.②High-pressure boiler steel tubes are mainly used to manufacture superheat
Welding method: When welding thick-walled steel pipes, first clean the oil, paint, water, rust, etc. of the weld joints, and then open the bevel according to the wall thickness. It is the gap between the products, which is generally 1-1.5 times the diameter of the welding rod or wire. If the groove
The welding of galvanized steel pipe should pay attention to:1. Galvanized steel pipes with a pipe diameter greater than 100mm should be connected by flanges or ferrule-type special pipe fittings.2. For the weld between galvanized steel pipe and flange, to ensure the welding quality, the weld joint
