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Better Pipe and Tube - T&H Lemont

High Frequency Induction Welding In the HFI tube welding process, high frequency current is induced in the open seam tube by an induction coil located ahead of (upstream from) the weld point, as shown in Fig. 1-1. The tube edges are spaced apart when they go through the coil, forming an open vee whose apex is slightly ahead of the weld point. Differences Between ERW and HFW Steel PipeNov 02, 2020 · HFW is required in API 5L PSL2 ERW steel pipe According the API 5L and ISO 3183 specification, for PSL 2 pipes in welded process the HFW welding is a mandatory requirements for ERW steel pipes. As it is an improvement from the inherent problems of hardness, lack of fusion and susceptibility of stress corrosion cracking (SCC).

HFI welding - Mannesmann Line Pipe GmbH

HFI welding Mannesmann Line Pipe uses the high-frequency induction (HFI) resistance pressure welding technique for longitudinal welding. The endless strip passes through rolling stands where it is shaped to an open pipe, which runs through a high-frequency inductor consisting of a metal coil with single or multiple windings. High Frequency Induction Welded Pipe, HFI pipe - Sunny SteelHFW welded steel pipes are widely preferred in Oil, Natural Gas, Water and other liquids transportation and distribution lines, heating, cooling, ventilation piping and steel structures for construction and other general purposes by means of precise production tolerances and high capacity manufacturing method. High Reliability Technology of the Weld Zone of High Abstract:High-frequency electric resistance welding (HFW) steel pipe is used in high-grade pipelines and energy field. To address the significant need for weld seam reli- ability, we have developed welding technology, high sen- sitivity ultrasonic inspection technology, and quality assessment technology for HFW pipe.

Petrosadid:Electric Resistance/ Fusion Welded (ERW and EFW)

High frequency welding (HFW) steel pipe is that ERW pipe produced with a welding current frequency equal to or greater than 70 kHZ. Through high-frequency current welding resistance, the heat generated in the contact objects, so the objected surface are heated to the plastic state, then with or without forging to achieve a combination of steels. What is HFW Steel Pipe? - Supply Chain QuarterlyOct 28, 2020 · Advantage of HFW pipe In the welding process, HFW steel pipes do not need to add filling meta. So it has fast welding speed and high efficiency in production. HFW pipe is widely used in the fields of oil and gas transportation, oil well pipeline, building structure and various kinds of mechanical pipe. What is HFW steel pipe?Oct 27, 2020 · In the welding process, HFW steel pipes do not need to add filling meta. So it has fast welding speed and high efficiency in production. HFW pipe is widely used in the fields of oil and gas transportation, oil well pipeline, building structure and various kinds of mechanical pipe.

What is Welded Steel Pipe - Bestarpipe

HFW- High-frequency welding. SAW- Submerged Arc Welding (Long seam & Spiral Seam) API 5L or ASTM welded steel pipe includes LSAW pipe, SSAW pipe, and ERW steel pipe. Welded Pipe Advantages:Cost:A big advantage of welded pipe is that it is the least expensive of all pipe types and it is much more readily available. What is a HFW steel pipe? - ugsteelmillDec 04, 2018 · HFW steel pipe production rate, welding speed of up to 30m/min. It is mainly used for the manufacture of pipes welded longitudinal seam or spiral seam. The welded pipe used high-frequency welding process of welding is mainly used for water, oil, natural gas, such as high frequency welding pipe- Aluminum/Al foil,plate/sheet 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. Chat Now Send Inquiry; High Frequency Welded Steel Pipe. High Frequency Weld Pipe *High Frequency Longitudinal Seam Welded Steel Pipe is also called ERW steel pipes, is the abbreviation

tpcointernational

Tianjin Pipe (Group) Corporation (TPCO) and Shanxi Taigang Stainless steel , Ltd. (TISCO). producing high-frequency ERW welded pipes. Two continuous-forming HFI/HFW welded pipe production lines were introduced from SMS-MEER, Germany. Located in Huai'an city, Jiangsu province. Capacity:0.5 million tons Size Range (O.D.):12" -