for 10~30Ma chemical equipment and pipes of high-quality carbon structural steel and alloy steel seamless steel tubes.
11. Automotive semi-axle casing seamless steel tubes is a high-quality carbon structural steel and alloy structural steel hot-rolled
seamless steel tubes for manufacturing automotive semi-axle casing and drive axle casing shaft tubes.
12. High-pressure tubing for diesel engines is a cold-drawn seamless steel tube that manufactures high-pressure pipes
for diesel injection systems.
13. Precise inner diameter seamless steel tubes for hydraulic and pneumatic cylinders are cold-drawn or cold-rolled precision
seamless steel tubes for the manufacture of hydraulic and pneumatic cylinders with a precise bore size.
14. Cold-drawn or cold-rolled precision seamless steel tubes (GB3639-2000) are used for mechanical structure, hydraulic equipment
size high precision and good surface finish cold-drawn or cold-rolled precision seamless steel tubes.The selection of precision
seamless steel tubes manufacturing mechanical structure or hydraulic equipment, can greatly save machining hours, improve the
utilization of materials, while also conducive to improve product quality.
15. Stainless steel Seamless pipe is widely used in chemical, petroleum, textile, medical, food, machinery and
other industries of corrosion- resistant piping and structural parts and components of stainless steel made of hot-rolled
(extrusion, expansion) and Leng Ba (rolling) seamless steel tubes.
16. Stainless steel seamless steel tubes for fluid conveying are hot-rolled (extruded, amplified) and Leng Ba(rolled) seamless
steel tubes made of stainless steels for conveying fluids.
17. Profiled Seamless steel tubes are other than circular tubes of the cross-section shape of the seamless steel tubes.
According to the shape of the cross-section of steel tubes, the different sizes can be divided into thick-shaped seamless steel
tubes (code-named D), unequal wall-shaped seamless steel tubes (code-named BD), variable diameter profiled seamless steel tubes
(code-named BJ). Profiled seamless steel tubes are widely used in various structural parts,tools and mechanical parts. Compared with
circular tubes, irregular tubes generally have greater inertia torque and cross-section modulus, there is greater bending resistance to
torsion, can greatly reduce the weight of the structure, saving steel.
Standard for welded steel pipe
1. Low-Pressure fluid conveying welded steel pipe also known as General welded pipe, commonly known as clarinet. is used for conveying
water, gas, air, oil and heating steam and other general low pressure fluids and other uses of welded steel tubes. Steel pipe wall thickness
is divided into ordinary steel pipe and thickened steel pipe; the nozzle form is divided into non-threaded steel tubes (light tubes) and threaded
steel tubes. The specification of the steel pipe is indicated by the nominal caliber (mm), the nominal caliber is the approximate value of the inner
diameter. Accustomed to commonly used inches, such as 11/2. In addition to the direct use of welded steel tubes for conveying fluids,
low-pressure fluid conveying is used as the original tube of galvanized welded steel tubes for low-pressure fluid conveying.
2. Low pressure fluid conveying galvanized welded steel pipe also known as galvanized welded steel tubes, commonly known as white tubes.
is used for conveying water, gas, air oil and heating steam, warm water and other general low pressure fluids or other uses of hot-dip galvanized
welding (furnace welding or welding) steel pipe. Steel pipe wall thickness is divided into ordinary galvanized steel pipe and thickened galvanized
steel pipe; the nozzle form is divided into non-threaded galvanized steel tubes and galvanized steel tubes with screw threads. The specification
of the steel pipe is indicated by the nominal caliber (mm), the nominal caliber is the approximate value of the inner diameter. Accustomed to
commonly used inches, such as 11/2.
3. Ordinary carbon steel wire casing is the industrial and civil construction, installation of machinery and equipment, such as electrical
installation works to protect the steel wire.
4. Straight Seam welded steel pipe is the longitudinal parallel steel pipe of weld and steel pipe. Usually divided into metric welded
steel tubes, welded thin-walled tubes, transformer cooling tubing and so on.
5. Spiral seam submerged arc welded steel pipe for pressurized fluid conveying is a hot-rolled steel strip for pipe billet, often warm
spiral molding, with double-sided submerged arc welding, used for pressure fluid conveying spiral seam pipe. Steel pipe bearing capacity,
good welding performance, after a variety of rigorous scientific examination and testing, the use of safe and reliable. Large diameter of
steel pipe, high conveying efficiency, and can save the laying of pipelines investment. Mainly used for transporting oil and gas pipelines.
6. High-frequency welded pipe for pressurized fluid conveying spiral seam is a hot-rolled steel strip for pipe billet, often warm spiral
molding, using high-frequency lap welding welding, used for pressure fluid conveying spiral seam high-frequency welded steel pipe.
Steel pipe bearing capacity, good plasticity, easy welding and processing molding; After a variety of rigorous and scientific tests and testing,
the use of safe and reliable steel pipe diameter,high conveying efficiency, and can save the laying of pipelines investment. It is mainly used for
laying pipelines for transporting oil and gas.
7. General low-pressure fluid conveying spiral seam submerged arc welded steel pipe is the hot-rolled steel strip for pipe billet, constant temperature
spiral molding, using double-sided automatic submerged arc welding or single-sided welding method for water, gas, air and steam,
such as general low-pressure fluid conveying submerged arc welded steel pipe.
8. General low-pressure fluid conveying spiral seam high-frequency welded steel pipe is a hot-rolled steel coil for pipe billet, often warm spiral
molding, using high-frequency welding method for general low-pressure fluid conveying spiral seam high-frequency welded steel pipe.
9. The Spiral welded steel pipe is made of hot-rolled steel strip for pipe billet, often warm spiral molding, using double-sided submerged arc welding
or high-frequency welding, used in civil construction, wharf, bridges and other basic piles of steel pipe.