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API 5L HFW PIPES

API 5L HFW PIPES

HFW Pipes

HFW pipes means High Frequency Welded Pipes.

ARROW supplies Carbon Steel High Frequency Electric Resistance Welded (HF-ERW) Pipes with an annual installed capacity of 100,000 MT. HF-ERW pipes are made from hot rolled flat steel strip, formed into tubular shape and the longitudinal seam is welded by the application of mechanical squeezing of edges and heating the edges through High Frequency Electric Resistance applied by induction or conduction.

HFW pipes refers ew pipe produce with a welding current frequency equal to or greater than 70Khz.
HFW pipe is kind of welded pipe type, and HFW pipe tube has similar meaning of ERW pipe.
HFW Welded Steel Pipe Used for construction of long distance pipelines for combustible liquids and gases, nuclear station pipelines, heating system pipelines, general-purpose pipelines, vessels manufacturing, mechanical engineering and instrumental engineering.

ARROW have exported Stainless Steel Pipes & Tubes to over 60 countries including Sudan,UAE, UK, Iran, Iraq, Qatar, Bahrain, Oman, Yemen, Lebanon, Jordan, Saudi Arabia, Malaysia, Indonesia, Singapore, Australia, New Zealand, USA, Canada, Mexico, BraziL, Netherlands, Germany, Italy, Spain, Serbia, Kuwait, Peru, Nigeria, Poland, South Africa, Denmark, Turkey, Egypt, Venezuela, Kuwait, Madagascar, Angloa & Sri lanka.

The Stainless Steel Pipes & Tubes are used in Hardware, Petro-Chemical Industry, Oil and Gas Industry, Nuclear Industry, Pulp & Paper Indusry, Research & Development, Mega Projects & Defense & Development Industries. In fact wing to the special grade of steel Stainless Steel Pipes & Tubes  are used for all critical applications.

The API 5L Gr B Carbon Steel ERW Pipes & Tubes are used in Hardware, Petro-Chemical Industry, Oil and Gas Industry, Nuclear Industry, Pulp & Paper Indusry, Research & Development, Mega Projects & Defense & Development Industries. In fact wing to the special grade of steel API 5L Gr B Carbon Steel ERW Pipes & Tubes are used for all critical applications.

ARROW is the supplier of high quality with prompt services. carbon steel is the easily the most selling Material. due to the excellent properties and general usage in highly corrosive environment. We have more than 2o years of experience in serving API 5L Gr B Carbon Steel Pipes & Tubes.

API 5L GRADE B Carbon Steel Pipes & Tubes

API 5L HFW Carbon Steel Pipes Grade X42/X46/X52/X56/X60/X65/X70/X80 PSL-1/PSL-2

Stockholder, Suppliers and Exporter of API 5L Grade B carbon Steel HFW Pipes 

This specification covers seamless and welded steel line pipe. It includes standard-weight and extra-strong threaded line pipe. It includes standard-weight and extra-strong threaded line pipe; and standard-weight plain-end, regular-weight plain-end, special plain-end, extra-strong plain-end, special plain-end, extra-strong plain-end pipe; as as well as bell and spigot and through-the-flow line(TFL) pipe.

The purpose of this specification is to provide standards for pipe suitable for use in conveying gas, water, and oil in both the oil and natural gas industries.
Sizes (Seamless): 1/2NB – 24″ NB
Sizes (ERW): 1/2NB – 60″ NB

Sizes (SAW): 16NB – 100″ NB

Wall Thickness available:
Schedule 20 – Schedule XXS (heavier on request) up to 250 mm thk.

API 5L X GRADE S HFW PIPES

Grade

Chemical Composition

Yield Strength

Tensile Strength

Yield to Tensile

Elongation

C Si Mn P S V Nb Ti

min. (KSI)

min. (KSI)

Ratio (max)

%

API 5L X52 0.16 0.45 1.65 0.020 0.010 0.07 0.05 0.04

52

66

0.93

21

API 5L X56 0.16 0.45 1.65 0.020 0.010 0.07 0.05 0.04

56

71

0.93

19

API 5L X60 0.16 0.45 1.65 0.020 0.010 0.08 0.05 0.04

60

75

0.93

19

API 5L X65 0.16 0.45 1.65 0.020 0.010 0.09 0.05 0.06

65

77

0.93

18

API 5L X70 0.17 0.45 1.75 0.020 0.010 0.10 0.05 0.06

70

82

0.93

17

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. Coil edges are milled using carbide cutters in order to assure a high quality weld. Coils are then formed by cold forming method using a set of cage rolls and fin passes, and then joined using high frequency currents using induction or alternatively conduction methods.

The coil edges, which reach welding temperature through the resistance shown by steel to the applied electrical current, are butted together and welded. This method does not use any filler material for the weld to take place. Immediately subsequent to welding, internal and external burrs are removed in order to achieve a uniform surface.

Post weld heat treatment facilities are used in order to temper martensitic structure created by the welding process. As a result of applied controlled normalization process, the weld area achieves a fine grain structure with required ductility.

The pipe string is brought to the exact required and precise outside diameter and straightness by passing through a set of sizing rolls. The pipe string is finally cut-to-length by a flying cut-off operating at the same speed as the pipe. Following beveling, hydrostatic testing, non-destructive testing, the pipes are subject to final inspection for the compliance to customer requirements.

Starting from incoming control up to the final inspection stage; entire process is monitored and supported by computerized system. Traceability is achieved by input controls and barcodes through entire production lines.