Cangzhou good quality steel pipe 20# GB8162 structural seamless steel pipe

材质：

20#

标准：

GB8162

Overview: The product has many advantages such as high strength, high pressure resistance, easy installation, low cost, and long service life.
, Detailed Description
Seamless steel pipes are made from steel ingots or solid tube blanks perforated into capillary tubes, and then hot rolled, cold rolled or cold drawn.
No. 1 seamless steel pipe plays an important role in my country's steel pipe industry. According to incomplete statistics, there are about
many seamless steel pipe manufacturers in my country, about
sets of seamless steel pipe units, and the annual production capacity is about
more than 10,000 tons. Judging from the caliber,
h
’s account for
h
’s, accounting for
. In terms of varieties, general purpose pipes
10,000 tons, accounting for
Oil pipes
10,000 tons, accounting for
hydraulic props, precision pipes
10,000 tons, accounting for
Stainless steel pipes, bearing pipes, and automobile pipes total
10,000 tons, accounting for
.
Seamless steel pipes are made from steel ingots or solid tube blanks that are perforated into capillary tubes, and then hot rolled, cold rolled or cold drawn.
No. 1 seamless steel pipe plays an important role in my country's steel pipe industry.
The raw material for rolling seamless pipes is round tube billet. The round tube billet must be cut by a cutting machine into a billet with a length of about
meters and sent to the furnace for heating via a conveyor belt. The billet is fed into the furnace and heated to a temperature of approximately
degrees Celsius. The fuel is hydrogen or acetylene. Temperature control in the furnace is a key issue
After the round tube blank is released from the furnace, it must be pierced through a pressure punching machine. Generally, the more common piercing machine is the tapered roller piercing machine. This type of piercing machine has high production efficiency, good product quality, large perforation diameter expansion, and can penetrate a variety of steel types. After perforation, the round tube blank is successively cross-rolled, continuous rolled or extruded by three rollers. After extrusion, the pipe should be removed and calibrated. The sizing machine rotates a tapered drill bit at high speed into the steel billet to drill holes to form a steel pipe. The inner diameter of the steel pipe is determined by the outer diameter length of the drill bit of the sizing machine. After the steel pipe is sized, it enters the cooling tower and is cooled by spraying water. After the steel pipe is cooled, it will be straightened. After straightening, the steel pipe is sent to the metal flaw detector (or hydraulic test) by the conveyor belt for internal flaw detection. If there are cracks, bubbles and other problems inside the steel pipe, they will be detected. After quality inspection, steel pipes must undergo strict manual selection. After the quality inspection of the steel pipe, the serial number, specification, production batch number, etc. are sprayed with paint and then lifted into the warehouse by a crane.
Seamless Steel Pipe Implementation Standard
(National Standard
)
[
] Structural seamless pipe (

) is used for general Seamless steel tubes for structural mechanical structures.

【
】Seamless steel pipe for fluid transportation (

) is a general seamless steel pipe used to transport fluids such as water, oil, gas, etc.

(Seamless steel pipe for transporting fluids) is mainly used for transporting fluid pipelines in engineering and large-scale equipment. The representative materials (grades) are
Q
etc.

【
】Seamless steel pipes for low and medium pressure boilers (
) are used to manufacture superheated steam pipes, boiling water pipes for low and medium pressure boilers of various structures and superheated pipes for locomotive boilers. High-quality carbon structural steel hot-rolled and cold-drawn (rolled) seamless steel pipes for steam pipes and arch brick pipes.
(Seamless steel pipe for low and medium pressure boilers). Mainly used in pipelines for conveying low and medium pressure fluids in industrial boilers and domestic boilers. The representative material is steel.

【
】Seamless steel pipes for high-pressure boilers (
) are high-quality carbon steels, alloy steels and Stainless heat-resistant steel seamless steel pipe.
(Seamless steel pipe for high-pressure boilers). It is mainly used for high temperature and high pressure resistant fluid transport headers and pipelines in power plants and nuclear power plant boilers. Representative materials are

and so on.

【
】High-pressure seamless steel pipe (
) for fertilizer equipment is suitable for working temperatures of
~℃
and working pressures of
~
High-quality carbon structural steel and alloy steel seamless steel pipes for chemical equipment and pipelines.
(Seamless steel pipe for high-pressure fertilizer equipment). Mainly used in fertilizer equipment to transport high temperature and high pressure fluid pipelines. Representative materials are

and so on.

【
】Seamless steel pipes for petroleum cracking (
) are seamless steel pipes suitable for furnace tubes, heat exchangers and pipelines in petroleum refineries.
(Seamless steel pipe for petroleum cracking). Mainly used in boilers, heat exchangers and pipelines for transporting fluids in petroleum refineries. Its representative materials are

Our company’s main products are: seamless steel pipe, spiral steel pipe, alloy steel pipe, anti-corrosion steel pipe, straight seam steel pipe