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Welded steel pipe & tube

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.

Welded pipes by Welding process:
Welded pipe is generally divided into straight seam welded pipe and spiral welded pipe two types.
ERW pipes
A plate rolled to become a pipe and welded using Electric Resistance Welding process.

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.

Spiral submerged-arc welding pipes
Spiral submerged arc welding(SSAW) is its forward direction and forming tube centerline hose reel molding angle (adjustable), side molding edge welding and weld them into a spiral.
Spiral welded pipe production by submerged arc method is based on using tandem welding technique for joining inside and outside coil edges, which have been trimmed and beveled by carbide milling for high quality weld structure.
Please view the recommended welded steel pipes and tubes as below:
Pipe cement mortar lining
Pipe cement mortar lining
Cement mortar lining can ensure a safe and abundant water supply for your water customers for many years to come.
Single-layer anti-corrosion epoxy powder pipe
Single-layer anti-corrosion epoxy powder pipe
It is nearly 30 years ago to develop a new type of coating, using electrostatic spray coating of epoxy powder coating, the first film.
3PP Anti-corrosion pipe
2PP/3PP Anti-corrosion pipe
Three-layer PE/PP coating is characterized by excellent corrosion-proof performance,insulatibity,relatively long service life and mechanical damage resistance.
3PE corrosion structure: the surface of the steel and epoxy powder electrostatic spraying adhesive side wound, lateral wound polyethylene coating, combined with the excellent performance of the three, thus significantly improving the overall quality of pipeline corrosion.
3PE steel pipe, 2PE Steel pipe
The 3PE Coating Steel Pipe enjoys good impact resistance, abrasive resistance, shock resistance, acid resistance, high quality and long service life.
Pipe cement mortar lining
Pipe cement mortar lining
Cement mortar lining can ensure a safe and abundant water supply for your water customers for many years to come.
Water pipe inner wall
IPN8710 Water pipe inner wall
High-density polyethylene jacket tube is widely used in oil pipelines, gas pipelines, urban heating pipes, water pipes, electricity and other corrosion engineering, product quality and service by the users of a good level.
HDPE pipes
HDPE pipe
High-density polyethylene jacket tube is widely used in oil pipelines, gas pipelines, urban heating pipes, water pipes, electricity and other corrosion engineering, product quality and service by the users of a good level.
Thick walled steel pipe
Thick walled steel pipe
Thick walled steel pipe is the pipe diameter and wall thickness ratio of less than 20 steel pipe.
Perfiles tubulares rectangulares
Rectangular Hollow Sections
Rectangular steel tube comes in different sizes, specifications and wall thicknesses. Its uniformity makes it predictable to use and visually appealing.
Square steel tube comes in different sizes, specifications and wall thicknesses. Its uniformity makes it predictable to use and visually appealing.
Square hollow section
Square steel tube comes in different sizes, specifications and wall thicknesses. Its uniformity makes it predictable to use and visually appealing.
For the best quality Oval Tubes, we serve as one-stop destination in the international market.
Oval pipe, Oval tubes
For the best quality Oval Tubes, we serve as one-stop destination in the international market.
Stainless steel oval pipe
Stainless steel oval tube offered in grades 304 and 316 in a wide choice of sizes.
ERW Galvanized Steel Pipe
ERW Galvanized Steel Pipe
Steel Pipes manufacturers and Exports huge range of ERW Galvanized Steel Tubes & Steel Pipes.
Threaded galvanized pipe
Pre-galvanized steel pipe
We can produce and supply to you various Pre-galvanized steel pipes according to international standard.
UOE is a method used for production of longitudinally welded large diameter pipes.
UOE pipes
UOE is a method used for production of longitudinally welded large diameter pipes.
High Frequency Welded pipe
HFI Pipes
In High Frequency Welded (HFW) pipe production process, hot rolled steel coils are fed with a high capacity accumulator in order to achieve continuous welding.
LSAW pipes
LSAW pipes
LSAW (Longitudinally Submerged Arc Welded Steel pipes) in leaflets plate as raw material, the steel plate in the mold or molding machine pressure (volume) into using double-sided submerged arc welding and flaring from production.
JCOE pipes
JCOE pipes
The mill adopts continuous axis contorting J-C-O(J-ing, C-ing and O-ing)process with characteristics of high forming accuracy and efficiency as well as balanced distribution of forming stress.
Internal Threaded Tubes
SAW pipes
SAW is normally operated in the automatic or mechanized mode, however, semi-automatic (hand-held) SAW guns with pressurized or gravity flux feed delivery are available.
EFW pipes
EFW pipe
The EFW pipe divison consists of a JCO forming press, helical / spiral mill, inside and outside welding system, heat treatment furnace and testing facilities.
Double Submerged arc welded pipe
DSAW pipes
Double Submerged Arc Welded (DSAW) steel pipe is available in straight and spiral welded formats and used in a variety of applications.
SSAW ASTM A252
SSAW ASTM A252 pipes
ASTM A252 standard covers nominal wall cylindrical steel pipe piles in which the steel cylinder acts as a permanent load-carrying member or as a shell to form cast-in-place concrete piles.

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