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Finego Steel Co., Ltd
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  5. Finego - Model ERW/HFW - Welded Steel ...

Finego - Model ERW/HFW -Welded Steel Pipe

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Outer Diameter: 1/2"-28". Wall Thickness: 1.65-20mm (all schedules). Length: 1-12m or as customer requirement. Standard: ASTM 5L, ASTM A53, ASTM A178, ASTM A500/501, ASTM A691, ASTM A252, ASTM A672, EN 10217.

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Material Grade (en):

API 5L: PSL1/PSL2  GR.A, GR.B, X42, X46, X52, X56, X60, X65, X70
ASTM A53: GR.A, GR.B
EN: S275, S275JR, S355JRH, S355J2H

Ends: Plain end / beveled end / threaded

Surface Treatment: Bare, painting black, varnished, galvanized, anti-corrosion 3pe pp/ep/fbe coating etc.

Process: Bold drawn / hot rolled

Test: Chemical component analysis, mechanical properties (ultimate tensile strength, yield strength, elongation), technical properties (flattening test, bending test,  hardness test, impact test), exterior size inspection, hydrostatic test, ndt test ( et test, rt test, ut test)

ERW, or Electric Resistance Welded Pipe, refers to the manufacturing method whereby Round E.R.W Steel Tube, or Electric Resistance Welded Steel Pipe has its steel edges melted and welded to form a consistent cylindrical shape. Heat and pressure are combined to join the steel sheet to give you a very lightweight and easy to work with tubing for an array of engineering and construction requirements from fencing to scaffolding. It can even be used in domestic or commercial settings for a vast array of possibilities.

ERW steel pipe includes HFW steel pipe: ERW is the general term for electric resistance welded steel pipe. It can be divided into two types: alternating current welding (AC) and direct current welding (DC). According to the different frequency, AC welding can be divided into low frequency welding, intermediate frequency welding, ultra high frequency welding and high frequency welding. High frequency welding (HFW) is mainly used for ordinary or thin-walled steel pipes. It includes contact welding and induction welding. DC welding is usually used for small diameter steel pipes. Generally, HFW is one of ERW production methods, which uses high-frequency welding technology. Therefore, ERW steel pipe includes HFW steel pipe.

Low cost: the low raw material cost and manufacturing cost make it prices more competitive than longitudinal seam submerged-arc welded pipes and seamless pipes.

High Weld Seam Security: As a result of special welding method of melting parent metal together, without filler metal, the weld property is better than submerged-arc welded pipes; and the weld seam is much shorter than spiral seam welded pipes, the seam security is greatly improved.

Wide Range: ERW pipes can be applied with a wide range of thickness / diameter ratio, covering hundreds of specifications.