Request a Quote

Single Drum Un-coiler

Equipment Composition

Mechanic: Coil preparation saddle, loading trolley, un-coiler main unit (main body, drum or conehead, brake device), hold down roll device, coil peeling device, coil head straightener device

Hydraulic: Shared among the hydraulic system of entry section

Electric: Shared among the electrical control system of entry section

Pneumatic: Air value, solenoid valve, air station

Request a Quote

Product Introduction

  Overview

The uncoiler serves as the very first entry-point piece of equipment for the entire ERW welded tube production line, undertaking the critical initial task of storing, supporting, unwinding and feeding steel coil raw materials for subsequent processing. Cooperating seamlessly with the coil loading trolley, it receives heavy steel coils delivered from the material yard, securely holds the coil inner bore via its expandable mandrel structure, and provides stable radial support to prevent coil deformation, loose winding or accidental collapsing during unwinding operation.
Designed with reliable driving and braking assemblies, the uncoiler performs controlled, continuous decoiling work to release flat steel strip steadily at a matched line speed. It consistently sends the unwound steel strip forward to the leveler/flattener unit for preliminary straightening, eliminating internal coil curvature and surface waviness before the strip enters the forming section of the tube mill.
As the starting core equipment governing material supply rhythm, stable running of the uncoiler directly guarantees uniform strip tension, consistent feeding continuity and overall production line stability. Properly configured uncoilers effectively avoid strip jamming, tensile distortion and uneven feeding defects, laying a solid, qualified material foundation for high-precision tube forming, high-frequency welding, sizing and all downstream procedures in OCTG casing, tubing and general structural pipe manufacturing lines.

Our Advantages

  • The bidirectional rotating drum enables upward and downward unwinding.
  • The hold-down roll prevents coil bounce and potential personal injuries, greatly enhancing operational safety. Additionally, a hydraulically or pneumatically actuated brake unit is installed at the rear of the uncoiler main body. With adjustable braking force, it effectively stops the coil from loosening during operation.

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.

Request a Quote

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.
Send Us WhatsApp Message

Frequently Asked Questions

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.
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.
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.
Yes. We offer full turn key solutions including process design, equipment manufacturing, installation guidance, commissioning, operator training and after sales service.
Absolutely. Our heat treatment and forming systems are specially engineered for high strength steel grades required for deep well oil and gas OCTG pipes.
T/T, L/C at sight are available. Flexible payment terms can be discussed for large scale turn key projects.
We provide 12 month warranty for core components from the date of shipment, with lifelong technical consultation and spare part supply service.

Related Products

ERW Tube Mill Line, Forming&Sizing Group For ERW Mill Line
Φ325-760mm High Duty FFX Direct Forming & Sizing Section for ERW Pipe,Roll Forming Stand for OCTG
We focus on FFX direct forming & sizing section for ERW OCTG pipe lines integrates W, FF/FFX, DFT forming and quick change system. High-frequency welding, precision sizing and straightening ensure high geometric accuracy. FF/FFX cuts roller costs 40–60%; DFT supports roll-free dimension tuning; quick change setup minimizes downtime to lift throughput and lower labor & equipment wear.
View Details
ERW Tube Mill Line, Forming&Sizing Group For ERW Mill Line
Φ273-610mm Welded/Seamless OCTG Pipes Forming Sizing Group,ERW Round-to-square Forming Mill
We focus on high-frequency ERW OCTG pipe forming sizing group with W, FF/FFX flexible, DFT direct forming & quick change system. High-frequency welding, precision sizing and straightening guarantee stable tube geometry. FF/FFX cuts roller costs 40–60%; DFT supports roll-free size tuning; quick change system slashes downtime, lifting throughput and lowering labor & equipment wear.
View Details
ERW Tube Mill Line, Forming&Sizing Group For ERW Mill Line
Φ165-325mm Round/Square/Rectangular Pipe FFX Direct Forming,ERW Pipe Mill Forming Sizing Unit
Our factory focus on FFX Direct Forming Group serves as core ERW pipe machinery for round, square and rectangular tubes, compatible with W, FF/FFX, DFT forming modes and quick-change shaft structure. It delivers highly dimensionally accurate finished pipes, sharply slashes roller expenses by 40–60%, lowers labor reliance, and drastically cuts production line downtime for boosted overall output efficiency.
View Details
ERW Tube Mill Line, Forming&Sizing Group For ERW Mill Line
Φ325-630mm Square&Rectangular Tube Forming & Sizing Group,ERW Forming Sizing Frame Assembly
Our factory focus on ERW square & rectangular tube forming and sizing unit bends, welds, cools and calibrates steel strips into high-precision straight pipes. It supports W, FF/FFX, DFT forming and quick change system, cutting roller costs by 40%-60%, realizing one-click recipe adjustment and offline roll replacement to slash downtime, labor input and equipment abrasion.
View Details
ERW Tube Mill Line, Forming&Sizing Group For ERW Mill Line
Φ114-273mm High Precision Forming Sizing Unit for ERW Pipe Production Line,Breakdown&Fin Pass Forming Stand
High-precision ERW forming sizing unit is core for HF tube lines, supporting W, FF/FFX flexible and DFT direct forming. Fast roll change slashes downtime, cuts roller costs 40–60%, manufactures round/square tubes with precise geometry, automated parameter adjustment and elevated production efficiency.
View Details
ERW Tube Mill Line, Forming&Sizing Group For ERW Mill Line
Φ40-114mm ERW Tube Mill Forming Section with Fast Roll Change,OCTG Forming & Sizing Section / Unit / Stand Group
Fast Roll Change ERW Tube Mill Forming Section for HF ERW pipe lines. Featuring W, FF/FFX flexible & DFT direct forming for precise shaping, sound welding and accurate sizing. Quick roll change reduces downtime, cuts roller & labor costs, supports round/square tube production and lifts productivity with automated adjustment.
View Details
ERW Tube Mill Line, Forming&Sizing Group For ERW Mill Line
Φ273-508mm High Frequency Welded Pipe Forming Sizing Group,OCTG Forming stands / Forming roll stands
Our team focus on ERW Pipe Forming & Sizing Unit is the core module for HF welded pipe lines, featuring W, FFX flexible and DFT direct forming plus quick change system. It shapes steel strip into tubes, welds, cools and calibrates dimensions, slashing roll swap time, labor cost and downtime to elevate precision and production capacity.
View Details
ERW Tube Mill Line, Forming&Sizing Group For ERW Mill Line
Φ219-406mm FFX Direct Forming & Sizing Section ERW Pipe Mill,OCTG Straight Seam Tube Forming Sizing Equipment
Our FFX Direct Forming & Sizing Section for ERW pipe mills bends steel strip into tubular profiles. It adopts HF induction welding, pipe cooling and precision sizing stands to calibrate outer diameter, with downstream Turks Heads for fine trimming and pre-straightening, guaranteeing stable roundness, straightness and precise geometry for finished welded tubes.
View Details
ERW Tube Mill Line, Forming&Sizing Group For ERW Mill Line
Φ89-219mm High Precision ERW Tube Mill Forming & Sizing Group for Round Square Pipe,OCTG Pipe Forming Sizing Station Group
Our ERW tube mill forming & sizing group forms steel strip into tubes with HF welding, cooling, sizing and Turks Heads for precision sizing & pre-straightening. It supplies Conventional W, FF/FFX flexible, DFT direct forming and quick change systems to improve dimensional accuracy, lower roller & labor costs, boost production capacity and minimize line downtime.
View Details
Accumulator For ERW Mill Line, ERW Tube Mill Line
120-360mm Width Looper Accumulator for ERW Tube Mill Line,Horizontal Accumulator Manufacturer China
ERW Tube Mill Looper Accumulator serves as a steel strip buffer between shear butt welding unit and forming section. It stores spare strip material to sustain continuous feeding during coil replacement and strip welding, eliminating production halts and downtime. It improves pipe dimensional accuracy, output and overall economic benefits for your entire ERW welded pipe production line.
View Details
Accumulator For ERW Mill Line, ERW Tube Mill Line
100-300mm Width Horizontal Serpentine Strip Accumulator,ERW Continuous Production Horizontal Accumulator
Horizontal Serpentine Strip Accumulator is installed on ERW pipe lines as steel strip buffer between shear-welding station & forming mill. It sustains continuous feeding amid coil changeover and butt welding, preventing line stops, cutting downtime, upgrading pipe consistency, yield, output and economic benefits for your ERW welded pipe production line.
View Details
Accumulator For ERW Mill Line, ERW Tube Mill Line
60-200mm Width Horizontal Accumulator for ERW Tube Mill,Large Capacity OCTG Strip Accumulator
Large Capacity Strip Accumulator installs on ERW pipe lines between shear-welding station & tube forming mill for steel strip buffering. It maintains uninterrupted feeding during coil changeover & butt welding, prevents line shutdowns, cuts downtime, stabilizes pipe dimension consistency, lifting yield, production throughput & overall economic profit for your ERW welded pipe line.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ325-660mm/◻100-500mm Orbital Milling Cutoff for ERW Pipe Production Line,Milling Flying Saw Supplier in China
Chinese Milling Flying Saw supplier supplying custom cutoff mills for ERW lines for high-speed cold cutting of small & medium steel tubes, matching flying cutoffs, ERW mills and OCTG casing & tubing lines. Shear structure removes heat via swarf, creating precise burr-free tube ends to lift line throughput and stable premium mass tube production quality.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ219-406mm/◻80-300mm ERW Tube Mill Flying Cut Off Saw,High Frequency Welded Pipe Orbital Milling Flying Cutoff
ERW Tube Mill Flying Cut Off Saw serves high-speed continuous cold cutting for small & medium steel tubes on ERW lines. Compatible with orbital cut-offs, ERW mills and OCTG casing & tubing lines. Shear structure with integrated cooling-lubrication removes heat via swarf, generating burr-free precise square tube ends to lift line throughput and stable premium mass production quality.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ48-165mm/◻50-150mm Round Square Rectangular Tube Cold Flying Saw,Orbital Milling Flying Cutoff Hydraulic Unit
Round Square Rectangular Tube Cold Flying Saw for ERW lines offers high-speed continuous cold cutting for small & medium steel tubes. Compatible with orbital milling cut-offs, flying cutters, ERW mills and OCTG casing & tubing lines. Shear structure with integrated cooling-lubrication dissipates heat via swarf, producing burr-free dimensionally precise tube ends to boost overall line productivity.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ76-168mm/◻60-130mm ERW Welded Pipe Flying Cold Saw,Servo Tracking Cold Flying Saw for OCTG
We focus on manufacturing ERW flying cold saw cuts medium & small diameter pipes at high continuous speed, compatible with orbital milling cutters and OCTG pipe mills. Its shear cutting structure with integrated cooling lubrication reduces heat buildup, delivering burr-free, distortion-free, squarely trimmed pipe ends to lift production efficiency and finished product stability.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ60-140mm/◻50-110mm Computer Flying Cold Saw for ERW Mill Line,Burr Free Tube Cold Flying Cutoff
Our factory focus on supplying burr-free tube cold flying saw enables high-speed continuous cutting for small & medium pipes, compatible with orbital milling cutters, ERW mills and OCTG production lines. The shear cutting structure with integrated cooling lubrication takes away cutting heat via scraps, producing flat, distortion-free pipe ends to raise line productivity and steady product quality.
View Details
Accumulator For ERW Mill Line, ERW Tube Mill Line
440-1100mm Strip Storage Accumulator for ERW Mill Continuous Production,Disc Type Horizontal Accumulator
Our ERW Disc Type Horizontal Accumulator serves as strip buffer storage between forming mill and welding station on ERW pipe lines. It supplies reserved steel strip during coil swapping and butt welding to avoid line halt, ensuring steady production, lowering downtime, improving pipe quality and boosting overall production efficiency and benefits.
View Details
Accumulator For ERW Mill Line, ERW Tube Mill Line
240-700mm Width Strip Accumulator for Tube Production Line,ERW Pipe Mill Horizontal Looper
We are a manufacturer focus on ERW Pipe Mill Horizontal Looper is a strip buffer installed between shear butt welding and forming mill. It stores steel strip to sustain stable material feeding during coil swap, end trimming and strip butt welding, avoiding production halt, boosting line efficiency, reducing downtime, improving pipe quality and raising overall output & economic benefits for ERW tube lines.
View Details
Accumulator For ERW Mill Line, ERW Tube Mill Line
100-260mm Anti-scratch Horizontal Spiral Accumulator for OCTG,ERW Floor Type Spiral Accumulator
Our factory focus on ERW Floor Type Spiral Accumulator acts as steel strip buffer storage between forming mill and welding station on ERW pipe lines. It supplies reserved strip during coil replacement and butt welding to avoid full line shutdown, realizing uninterrupted production, cutting downtime, optimizing pipe dimensional consistency and greatly raising production output and economic benefits.
View Details
Accumulator For ERW Mill Line, ERW Tube Mill Line
320-900mm Wholesale Horizontal Strip Accumulator for ERW Pipe Mill Line,Accumulator System for OCTG
Our team focus on OCTG accumulator system sits between butt welding station and ERW forming mill to buffer steel strip. It supplies reserved material during coil swapping, strip trimming and butt welding to prevent line stoppage, sustain continuous production, lower downtime, boost pipe yield, dimensional consistency and overall output & economic benefits for ERW tube production lines.
View Details
Accumulator For ERW Mill Line, ERW Tube Mill Line
600-1300mm Variable Loop Horizontal Accumulator for OCTG,Custom Horizontal Looper for ERW Tube Mill
We focus on manufacturing Variable Loop Horizontal Accumulator is mounted between butt welding station and ERW forming mill to buffer steel strips. It supplies reserved strip during coil change, trimming and butt welding to avoid line halt, enable steady continuous production, cut downtime, upgrade pipe yield & dimensional uniformity, and boost overall productivity and economic profits of ERW pipe lines.
View Details
Accumulator For ERW Mill Line, ERW Tube Mill Line
160-520mm Horizontal Spiral Accumulator for High Speed Tube Mill,PLC Automatic Horizontal Looper
Our factory could supply PLC Automatic Horizontal Looper serves as steel strip buffer between butt welding station and ERW forming mill. It feeds reserved strip during coil change, trimming and butt welding to avoid line stop, guarantee continuous production, reduce downtime, improve pipe yield & dimensional stability and lift overall output and profits of ERW pipe lines.
View Details
Accumulator For ERW Mill Line, ERW Tube Mill Line
40-100mm Horizontal Accumulator for ERW Pipe Production Line,OCTG Pipe Line Horizontal Strip Accumulator
We are a manufacturer focus on supplying 40–100mm Horizontal Strip Accumulator mounts between shear-end welder and ERW forming mill to reserve steel strip buffer. It ensures uninterrupted feeding during coil change, trimming & butt welding, avoiding line stops, stabilizing production, cutting downtime and lifting pipe yield, dimensional consistency, throughput and overall line profitability.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ165-273mm/◻60-220mm ERW Orbital Milling Flying Cutoff for Straight Seam Welded Tube Mill,Orbital Trajectory Milling Cut-off Unit
Our team focus on orbital trajectory milling cut-off machine,which is a fully automatic inline flying cold cutting device tailored for ERW tube, seamless pipe & OCTG production lines. Upgraded from flying shears & cold saws, it applies planetary orbital milling to track moving pipes and cut fixed lengths without line halt. Full cold cutting leaves burr-free, distortion-free ends with no HAZ, ideal for carbon/alloy/stainless steel tubes and OCTG casing & tubing.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ32-108mm/◻30-75mm ERW Flying Saw Servo Tracking System,Online Pipe Fixed Length Cutting Flying Cold Saw
Our factory focus on ERW Flying Saw Servo Tracking System is a fully automatic in-line flying cold cutting device built for ERW tube, seamless pipe and OCTG production lines. With orbital milling technology, it cuts moving pipes to set lengths without line stops, generating burr-free, distortion-free pipe ends with zero HAZ for carbon, alloy and stainless steel pipes.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ13-38mm/◻10-30mm Flying Saw Synchronization Control System,ERW Tube Mill Cold Flying Saw
We focus on manufacturing Flying Saw Synchronization Control System,which is tailored for high-speed continuous cold cutting of small & medium metal pipes, matching orbital milling cutters, ERW mills and OCTG production lines. With complete cooling lubrication, it removes cutting heat efficiently to make burr-free, distortion-free precise cuts and greatly lift production efficiency and pipe finished quality.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ325-711mm/◻100-600mm Custom Orbital Milling Cutoff for Large Tube Mill,Orbital Milling Cutoff Manufacturer China
Our Coordinate Orbital Milling Cutoff Saw offers high-speed continuous cold cutting for various-diameter metal tubes, matching orbital milling, flying cutoff, ERW and OCTG pipe lines. Shear cutting with full cooling takes heat into swarf for cool blades & tubes, delivering burr-free, distortion-free precise cuts to raise productivity for medium & large tube mass production.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ219-508mm/◻100-400mm ERW Tube Mill Orbital Flying Cutoff Saw Machine,Rectangular Coordinate Orbital Milling Cutoff
Our Orbital Flying Cutoff Saw delivers fast continuous cold cutting for multi-diameter tubes, compatible with orbital milling, flying cutoff, ERW and OCTG pipe lines. Shear-type cold cutting with full cooling transfers heat into swarf, ensuring cool blades & workpieces for burr-free, distortion-free precise cuts to raise throughput for small & medium tube mass production.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ114-219mm Complete Tube Mill Line Orbital Milling Cutoff Solution,Orbital Flying Cutoff Saw for OCTG
Orbital Flying Cutoff Saw enables high-speed continuous cold cutting for various-diameter metal tubes, compatible with orbital milling units, flying cutters, ERW and OCTG pipe lines. Shear-type cold cutting with full cooling transfers heat into swarf, producing burr-free, distortion-free precise pipe ends to boost throughput for small & medium tube mass production.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ32-89mm High Frequency Welded Pipe Cold Flying Saw,Synchronous Tracking Flying Cold Saw
High Frequency Welded Pipe Cold Flying Saw is a professional inline cold flying cutter designed for ERW, seamless and OCTG pipe production lines. It replaces conventional flying shears, adopting orbital milling for stable continuous tracked cut-to-length cutting, delivering burr-free, deformation and HAZ-free pipe ends for various steel pipe processing demands.
View Details
ERW Tube Mill Line, Packaging Machinery
Fully Automatic OCTG Pipes & ERW Tubes Packing Machine,Packaging Machinery for Steel Pipe Mill Line
Our factory focus on automatic packing machine for OCTG and ERW pipes is deployed at production line tail with fork fixtures to auto gather, convey and stack tubes. It adapts fork span for round, square and rectangular pipes, layers products per preset layouts, slashes manual workload, realizes full automation and greatly elevates overall production efficiency.
View Details
Cutoff For ERW Mill Line, ERW Tube Mill Line
Φ76-127mm ERW Mill Line Burr-Free Orbital Milling Cutoff Equipment,Synchronous Flying Orbital Cutoff for OCTG
New-gen automatic inline Orbital Milling Cutoff upgrades traditional flying shears and cold saws for ERW, seamless pipe and OCTG production lines. It enables synchronous continuous cold cutting without line downtime, producing burr-free, deformation-free & HAZ-free ends for carbon, alloy, stainless steel pipes, OCTG casing and tubing.
View Details
ERW Tube Mill Line, H.F.Induction Solid State Welder For ERW Mill Line
ERW Tube High Frequency Welding Machine,H.F.Induction Solid State Welder for OCTG Production Line
We could supply solid-state high-frequency induction welder,which employs proven AC-DC-AC circuit topology equipped with three-phase thyristor rectifier and DC bus LC filter. Modular parallel MOSFET inverters work with matched transformers to complete power combination, impedance matching and electrical isolation, plus rapid overcurrent protection to guarantee stable and reliable equipment operation.
View Details
ERW Tube Mill Line, Forming&Sizing Group For ERW Mill Line
CE Certified ERW Tube Forming Sizing Mill with Quick Change System,Automatic Adjustment Forming & Sizing Unit
Our factory manufacture ERW tube mill line includes forming, HF welding, cooling and sizing sections with Turks Heads for precision calibration. It offers three forming modes: W Forming for high accuracy and long service life; FF/FFX slashing roller cost and change time; DFT supporting roll-free size switching with one-click recipe adjustment. The quick change system realizes offline roller setup to sharply reduce production downtime.
View Details
Accumulator For ERW Mill Line, ERW Tube Mill Line
Horizontal Table/Spiral Accumulator For ERW Pipe Mill,Tube Mill Strip Storage Horizontal Accumulator
Horizontal & spiral strip accumulators install between shear-end welder and forming mill on ERW pipe lines. They reserve steel strip to feed downstream mill continuously during coil change, strip cutting & butt welding, preventing line stops. This vital auxiliary ensures non-stop ERW tube production, reduces downtime, and improves line efficiency, product yield and overall productivity.
View Details
ERW Tube Mill Line, Shear End Welder For ERW Mill Line
Automatic Shear End Welder for ERW Tube Mill Line,Continuous Strip Shear Butt Welder Unit
The shear end welder we supply serves as vital front-end auxiliary equipment for ERW and OCTG welded pipe production lines. It precisely trims deformed and uneven edges of old and new steel strip coils, then completes automatic alignment and butt welding to splice strips tightly. The joined steel strip enters the accumulator, eliminating line stops during coil replacement and sustaining steady, non-stop pipe fabrication.
View Details
ERW Tube Mill Line, Flattener
ERW Welding Flattener,Strip Leveling Machine for OCTG Tube Mill,Steel Strip Straightening Machine
The flattener machine our factory supply is a necessary auxiliary device for ERW pipe lines. It levels hot & cold rolled steel strips to fix camber, edge curl and warpage. Precise rolling ensures uniform flatness before forming, prevents strip shifting, reduces welding defects like seam offset and incomplete penetration, and stabilizes finished pipe dimensional precision.
View Details
ERW Tube Mill Line, Un-coiler
Double Drum Un-coiler
Double drum uncoiler works as core inlet equipment for ERW welded pipe production lines, unwinding steel coils with the support of coil loading trolleys. The expandable mandrel prevents coil distortion, while matched driving and braking systems ensure stable strip feeding to the leveler, keeping constant tension and eliminating material jams to support precise forming, HF welding and sizing for OCTG casing, tubing and structural pipes.
View Details

Request a quote