Weld steel pipes

Welded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates,
known as skelp, that are formed, bent and prepared for welding.

Figure1

Welded pipes by manufacturing process

Sunny Steel produce an extensive selection of welded steel pipe including ERW, HFI, EFW, LSAW, DSAW and UOE type carbon steel pipe along with their respective flanges and fittings.

Electric Resistance Welded Pipe
ERW
ERW (Electrical Resistance Welding) pipes are manufactured by cold forming of steel coil into a round cylindrical shape are used in various engineering purposes..
High Frequency Induction (HFI) Welded Pipe
HFI
In High Frequency Induction (HFI) Welded Pipe production process, hot rolled steel coils are fed with a high capacity accumulator in order to achieve continuous welding.
Spiral submerged-arc welding pipes
SSAW
Spiral submerged arc welding is its forward direction and forming tube centerline hose reel molding angle side molding edge welding and weld them into a spiral.
Electric Fusion Welded Pipes
EFW Pipes
The EFW pipe divison consists of a JCO forming press, helical / spiral mill, inside and outside welding system, heat treatment furnace and testing facilities.
Longitudinally Submerged Arc Welded Steel pipes
LSAW
LSAW (Longitudinally Submerged Arc Welded Steel pipes) in leaflets plate as raw material, the steel plate in the mold or molding machine pressure (volume)...
Double Submerged Arc Welded (DSAW) steel pipe
DSAW
Double Submerged Arc Welded (DSAW) steel pipe is available in straight and spiral welded formats and used in a variety of applications.
UOE (Uing and Oing forming) Pipes
UOE
UOE(Uing and Oing forming) is a method used for production of longitudinally welded large diameter pipes.
J-ing, C-ing and O-ing pipes
JCOE
J-ing, C-ing and O-ing process with characteristics of high forming accuracy and efficiency as well as balanced...
SAW
SAWPIPE commonly refer to large diameter weld pipe, it can be classified into LSAW and SSAW .

Welded pipes specification and size

API SPEC 5CT
Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Casting API 5CT 48.3-273 x 2.77-11.43 J55, K55, N80, L80
Tubing API 5CT 48.3-273 x 2.77-11.43 J55, K55, N80, L80, H40
API SPEC 5L
Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Line Pipes API 5L 60.3-273.1 x 2.77-12.7 A25, A, B, X42, X46, X52, X56, X60, X65
ASTM / ASME
Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Electric-Resistance-Welded Steel Pipes ASTM A135 42.2-114.3 x 2.11-2.63 A
Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes ASTM A178 42.2-114.3 x 2.11-2.63 A, C,D
ERW and Hot-dip Galvanized Steel Pipes ASTM A53 21.3-273 x 2.11-12.7 A, B
Pipes for Piling Usage ASTM A252 219.1-508 x 3.6-12.7 Gr2, Gr3
Tubes for General Structural Purpose ASTM A500 21.3-273 x 2.11-12.7 Carbon Steel
Square Pipes for General Structural Purpose ASTM A500 25 x 25-160 x 160 x 1.2-8.0 Carbon Steel
BS
Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Screwed and Socketed Steel Tubes BS 1387 21.4-113.9 x 2-3.6 Carbon Steel
EN
Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Scaffolding Pipes EN 39 48.3 x 3.2-4 Carbon Steel
JIS
Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade
Carbon Steel Tubes for General Structure Purpose JIS G3444 21.7-216.3 x 2.0-6.0 Carbon Steel
Carbon Steel Tubes for Machine Structure Purpose JIS G3445 15-76 x 0.7-3.0 STKM11A, STKM13A
Carbon Steel Pipes for Ordinary Piping JIS G3452 21.9-216.3 x 2.8-5.8 Carbon Steel
Carbon Steel Pipes for Pressure Service JIS G3454 21.7-216.3 x 2.8-7.1 Carbon Steel
Carbon Steel Rigid Steel Conduits JIS G8305 21-113.4 x 1.2-3.5 G16-G104, C19-C75, E19-E75
Carbon Steel Rectangular Pipes for General Structure JIS G3466 16 x 16-150 x 150 x 0.7-6 Carbon Steel

Special Welded Tubes

We can produce precision and high-frequency welded steel tubes and pipes with all possible dimensions and shapes available.
API5L Steel pipe for pipeline transportation system
Hot dip galvanized steel pipe

Hot dip galvanized steel pipe

Hot-dip galvanizing (HDG), as referenced is the process of dipping fabricated steel into a kettle or vat of molten zinc.

Anti-corrosion steel pipe

Anti-corrosion steel pipe is processed through the preservation process, which can effectively prevent or slow down the process in the transport and use of chemical or electrochemical corrosion reaction of steel pipe.

Anti-corrosion steel pipe
Stainless Steel Welded Pipe

Stainless Steel Welded Pipe

Our staff are qualified and certified according to all current welding procedures, thus guaranteeing our customers longitudinally welded stainless steel pipes in line with the requirements.

  • Stainless steel contains chromium which provides the properties of corrosion resistance at high temperatures.
  • Stainless steel can withstand corrosive or chemical environments due to its smooth surface.
  • Stainless steel products are safe for long-term use with excellent resistance of corrosion fatigue.

Offshore Pipeline

Offshore Pipeline

Geological Drilling Pipe

Geological tube is steel pipe that using core drilling for the geological department, which a hollow cross section, surrounded by long geological drilling joints with steel pipes.

Weled steel pipe specification, Standard and identification

Welded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.

Figure1
Hot dip galvanizing

Galvanized pipe process characteristics

What is Galvanized Steel Pipe? Galvanized steel can be made into a strong plumbing or tubing material -- one that resists corrosion from exposure to water or the elements. It has been used used for water-supply pipes or as a strong tubing for outdoor applications.



SUNNY STEEL

Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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