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Galvanized steel pipe

Galvanized Steel Pipe

Welded steel pipes with hot-dip or electro galvanized coatings on the surface of galvanized steel pipes. Galvanizing can increase the corrosion resistance of steel pipes and extend their service life. Galvanized pipes have a wide range of uses, in addition to being used as pipeline pipes for general low pressure fluids such as water, gas, and oil, they are also used as oil well pipes and oil delivery pipes in the petroleum industry, especially in offshore oil fields, as well as pipes for oil heaters, condensate coolers, coal distillation and washing oil exchangers in chemical coking equipment, as well as pipes for support frames in trestle piles and mining tunnels.

The galvanized steel pipe production line of Tianjin Yuantai Derun Steel Pipe Manufacturing Group is equipped with 16 Hot-dip galvanization steel pipe production lines and 9 pre galvanized steel pipe production lines. The production bases are located in Tangshan and Tianjin. The dimensions of galvanized steel pipes that can be produced are as follows:

Hot-dip galvanization square steel pipe:

Outer diameter 10 * 10-1200 * 1200mm Wall thickness: 0.5-60mm Length 0.5-24M

Hot-dip galvanization rectangular steel pipe:

Outer diameter 10 * 15-800 * 1200mm Wall thickness: 0.5-60mm Length 0.5-24M

Hot-dip galvanization round steel pipe:

Diameter 10.3-3000mm Wall thickness: 0.5-60mm Length 0.5-24M

Pre galvanized square steel pipe

Outer diameter 20 * 20-200 * 200mm Wall thickness 1.2-16mm Length 0.5-24M

Pre galvanized rectangular steel pipe

Outer diameter 20 * 30-150 * 300mm Wall thickness: 1.2-16mm Length: 0.5-24M

Pre galvanized circular steel pipe

Diameter 10.3-200mm Wall thickness: 0.5-16mm Length: 0.5-24M

No matter what size, thickness, or length you need, we can follow your needs for mass customization production.

1. Characteristics of galvanized steel pipes:

(1) Lightweight: Galvanized steel pipes are 1/3 lighter than carbon steel structures of the same specification, with a reasonable structure that is easy to transport and install. Galvanized steel pipe.

(2) High strength: Under the same cross-sectional load, compared with round steel, its bearing capacity can be increased by 20%.

(3) Strong corrosion resistance: The hot-dip galvanized layer is about 30 times thicker than the pure iron passivation film.

2. Precautions for construction of galvanized steel pipes:

(1) When excavating the foundation pit, attention should be paid to the drainage of groundwater and rainwater; When the soil is sandy or plain fill, mechanical excavation method should be used; When the soil is sticky or powdery, manual excavation method should be used for construction.

(2) After the excavation of the foundation pit reaches the design elevation, slope support should be carried out in a timely manner.

(3) The cushion layer at the bottom of the trench must be cleared of loose materials and leveled and compacted before laying the pipeline foundation cushion layer. The thickness of the cushion layer is generally 100mm~150mm.

(4) The pipeline foundation shall be provided with Expansion joint or settlement joint to adapt to different soil conditions and temperature changes in different regions;

At the same time, in order to ensure the stability of the pipeline foundation and prevent uneven settlement of the foundation from generating additional stress on the pipeline, support points need to be set on both sides of the pipeline to fix the position of the pipeline and bear the load of the pipeline.

(5) The protective grounding of buried water supply pipelines can be reliably grounded by welding or flange connection; When grounding by welding, stainless steel corrugated hose should be used as a jumper wire to connect the ground wire.

(6) The contact between metal conduits laid underground and the surrounding soil should be sealed with rubber rings or sealed with epoxy resin adhesive.

(7) For places with vibration or impact, threaded water supply and drainage pipeline systems should not be used;

(8) For corrosive liquid media, it is not advisable to directly discharge them into water or add chemical agents to the water for treatment before discharge.

(9) Cable lines buried underground without special protective measures are strictly prohibited from crossing roads, railways, or other public facilities, as well as internal walls and floors of buildings;

(10) Cable lines buried underground with special protection requirements should be protected above ground level before passing through;

(11) When wires and cables pass through bridge holes, there should be anti eddy current protection devices to prevent eddy current damage to the insulation;

(12) Electrical equipment shall not be installed in humid and corrosive gas environment;

(13) The metal casing of electrical equipment must have reliable grounding or grounding, as well as protective grounding terminal boxes and other safety facilities for grounding protection.

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