steel pipe
Classification of Steel pipes
1. Classified by production method
(1) Seamless steel tubes-hot rolled pipes, cold-rolled tubes, cold-drawn pipes, extrusion tubes, pipe jacking
(2) Welded pipe
(a) by process-arc welded pipe, resistance welded pipe (HF, low frequency), gas pipe, furnace welded pipe
(b) by weld seam-longitudinal welded pipe, spiral welded pipe
2. Classified by use-pipe
steel pipe for thermal equipment, steel pipe for mechanical industry, petroleum, geological drilling pipe,
vessel steel pipe,steel pipe for chemical industry, special purpose steel pipe
Seamless Steel Tubes Use
1. Structural Seamless Steel Tubes are used in general structure and mechanical structure of the seamless steel tubes.
2. Fluid conveying seamless steel tubes are used for conveying water, oil, gas and other fluids general seamless steel tubes.
3. Low-medium pressure boiler seamless steel tubes is used in the manufacture of a variety of low-medium pressure boiler
superheated steam pipes, boiling water pipes and locomotive boiler with superheated steam pipes, smoky tubes, small
smoke tubes and arch-brick pipes, hot-rolled and Leng Ba (rolled) seamless steel tubes.
4. High-pressure Boiler seamless steel tubes is used for the manufacture of high-pressure and above the pressure
of the water boiler heating surface of high-quality carbon steel, alloy steel and stainless steel seamless steel tubes.
5. Chemical fertilizer equipment with high-pressure seamless steel tubes is suitable for working temperature-40, working pressure
for 10~30Ma chemical equipment and pipes of high-quality carbon structural steel and alloy steel seamless steel tubes.
6. Oil cracking seamless steel tubes is suitable for the oil refinery furnace tubes, heat exchangers and pipe seamless steel tubes.
7. The geological Drilling pipe is for the geological department to carry out core drilling for the use of steel tubes,
according to use can be divided into drill pipe, drill collar, core pipe, casing and sedimentation tubes.
8. Diamond core drilling Seamless steel tubes is used for diamond core drilling drill pipe, core rod, casing seamless steel tubes.
9. The oil drilling pipe is used in the oil drilling at both ends of the thickening or external thick seamless steel tubes.
Steel pipe wire and no car silk two kinds, wire tube connector coupling, no wire pipe welding method and tool joints coupling.
10. Carbon Steel seamless steel tubes for ships is a seamless steel pipe for the manufacture of vessel I-grade pressure-resistant pipes,
Ⅱ-grade pressure-resistant pipes, boilers and superheater. Carbon steel seamless pipe wall operating temperature not exceeding 450 ℃,
alloy steel pipe wall operating temperature exceeds 450 ℃.
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.
Our Advantages:
1) Fast Delivery: around 10days below 50Metric Tons after sight of Irrevocable L/C or Deferred Payment L/C
Our company accept payment after material at your warehouse.
2) Quality Assured: Strictly acc. To International standard API & ASTM & BS & EN & JIS, with System ISO certification
3) Good Service: supplied professional technical guide free of charge at anytime;
4) Reasonable Price: to be better support your business;
High Quality Package :
1) In bundle with steel strip
2) First packing by plastic bag then strip; Details packing please see the picture in the detial description.
3) In bulk
4) Client' requirements
5) Delivery:
- Container: 25 tons/container for pipe with usual outer diameter. For 20" container the max length is 5.85m; For 40" container the max length is 12
- Bulk carrier: It is no requirements to the length of the pipe. But its booking space time is long.
Global Business
1. More than 10 years of sales experience
2. Product exported more than 150 countries
3. Arrange to produce according yo customer's request
Fast Delivery
1. AA level customs broker,Faster through
2. 20 years of experience in the freight forwarding company
3. Delivery Detail: 10-20 days
Trusted Quality
1. Certificate: API, CE, ISO9001.2000.MTC etc
2. Inspection: BV,SGS,others is avaliable.
3. A complete testing system and testing equipments
One-Step Service
1. Free sample can be provided
2. Small order is acceptable
3. OEM is acceptable
4. Any third party testing is acceptable
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