Soldador de alta frequência de estado sólido para OCTG

Equipment Composition

Rectifying & Inverter cabinet x 1 set

Console (with PLC) x 1 set

Positioning table x 1 set

Air conditioner x 1 set

Water cooler (stainless steel pump) x 1 set

Inductor x 1 set

Product Introduction

The Solid-State High-Frequency Induction Welder features a classic AC-DC-AC variable-frequency topology. Its rectifier section employs a three-phase full-bridge thyristor phase-controlled rectifier circuit, while an LC filter assembled from inductors and capacitors is installed on the DC bus to satisfy the operating criteria of the voltage-source inverter.

The voltage-source inverter utilizes a modular parallel layout for scalable power output. Every individual inverter module consists of a single-phase MOSFET full-bridge circuit coupled to a series resonant tank via a high-frequency matching transformer. This matching transformer serves dual purposes: it aggregates output power and optimizes impedance matching, while providing galvanic isolation between the power source and welding load.

A dedicated high-reliability overcurrent protection circuit is integrated to deliver prompt and effective fault response against inverter overcurrent conditions, safeguarding consistent and secure inverter operation.

Advantages:

High Temperature & High Withstand Voltage Performance

Silicon carbide (SiC) power devices feature a theoretical maximum operating temperature exceeding 600°C, roughly four times the limit of equivalent silicon (Si) counterparts, alongside a tenfold improvement in blocking voltage rating. Such superior properties enable reliable operation under harsher extreme working conditions.
Compact Size & Lightweight Design

Boasting superior thermal conductivity and power density, SiC components help streamline overall cooling architectures. This optimization facilitates equipment miniaturization and weight reduction while shrinking the overall footprint of finished machinery.
Low Power Loss & High-Frequency Capability

SiC devices support operating frequencies up to 10× higher than conventional silicon alternatives without sacrificing conversion efficiency, cutting power losses by approximately 50%. Elevated working frequency also downsizes passive peripheral parts including inductors and high-frequency transformers, effectively trimming system bulk and auxiliary component procurement costs.

About GH-Petro

GH-Petro supplies customized ERW & OCTG pipe mill solutions.We combine domestic craftsmanship and international leading technologies to deliver high-quality equipment and reliable services.

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Order Process

1️⃣ Send Your Inquiry
Tell us your product needs and order details.

2️⃣ Confirm the Solution
We recommend the right product and confirm the price.

3️⃣ Production & Quality Check
We arrange production and check the quality before delivery.

4️⃣ Shipping & Support
We ship the goods and provide after-sales support.

Simple. Fast. Reliable.

Frequently Asked Questions

What types of pipes mill do you supply?

We are a professional manufacturer and we could supply customized mill for ERW pipes and full-range OCTG pipes to meet your request,which include Entry Section,Forming&Sizing,Solid State HF Welder,Straightening Machine,Cold Flying Saw,End Facing Machine,Hydro-tester,UT Flaw Detection Machine,Threading Machine,Bucking Machine and Pipes Packing Machine.

What is your MOQ for Mill orders?

MOQ is flexible for us and one set is feasible.Of course our team also could supply you a complete solution according to your request.

Which standards do your pipe mill machines follow?

All kinds of our equipment are designed for producing pipes meeting API 5CT, API 5L, ASTM, EN, ISO and GB standards, suitable for oil & gas, pipeline, structural and industrial pipe applications.

Can you provide turn key ERW & OCTG pipe mill projects?

Yes. We offer full turn key solutions including process design, equipment manufacturing, installation guidance, commissioning, operator training and after sales service.

Do your machines support high grade OCTG production such as N80, L80, P110?

Absolutely. Our heat treatment and forming systems are specially engineered for high strength steel grades required for deep well oil and gas OCTG pipes.

What payment terms do you accept?

T/T, L/C at sight are available. Flexible payment terms can be discussed for large scale turn key projects.

What is your warranty period?

We provide 12 month warranty for core components from the date of shipment, with lifelong technical consultation and spare part supply service.

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