This hydraulic expander serves as core forming equipment for OCTG lines, expanding and calibrating seamless casing, tubing and drill pipes to eliminate ovality, wall thickness unevenness and dimensional errors. Featuring precise hydraulic drive and modular dies for even radial expansion, it fits carbon, alloy and high-strength steel, ensures stable dimension consistency, and aligns with downstream processes to satisfy API Spec 5CT requirements.
Our team could suppluy tailored solid-state HF induction welder adopts AC-DC-AC variable frequency structure with thyristor rectification and LC filtering. Modular parallel MOSFET inverters connect resonant circuits via isolation transformers for power convergence and impedance matching, equipped with fast overcurrent protection to ensure stable, safe welding operation.
Our ERW tube mill covers forming, HF welding, cooling, sizing and Turk head straightening. It supports W, FF/FFX flexible and DFT direct forming; quick roll change system slashes downtime, ensures precise dimension, cuts roller & labor cost and lifts output for round & square pipe production.
La nouvelle génération de machines de tronçonnage par fraisage orbital en ligne remplace les cisailles volantes et les scies à froid traditionnelles sur les lignes de production de tubes soudés par résistance (ERW), de tubes sans soudure et de tubes OCTG. Elles permettent une découpe à froid synchrone et en continu, sans arrêt de la ligne de production, et produisent des extrémités sans bavures, sans déformation et sans zone affectée thermiquement (HAZ) pour les tubes en acier au carbone, en acier allié et en acier inoxydable, ainsi que pour les tubages et les tubes de production OCTG.
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.
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.
Les accumulateurs de bandes horizontaux et hélicoïdaux sont installés entre la soudeuse en bout et le laminoir de formage sur les lignes de production de tubes ERW. Ils stockent la bande d'acier afin d'alimenter en continu le laminoir en aval pendant le changement de bobine, la découpe de la bande et le soudage bout à bout, évitant ainsi les arrêts de ligne. Cet équipement auxiliaire essentiel garantit une production ininterrompue de tubes ERW, réduit les temps d'arrêt et améliore l'efficacité de la ligne, le rendement du produit et la productivité globale.
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.
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.
Our factory focus on ERW tube mill entry uncoiler,which features coil trolley automatic feeding and expandable mandrel unwinding structure to convey steel strips precisely into the flattener. Constant stable strip tension effectively prevents material blockages, delivers perfectly leveled blanks for subsequent forming, high-frequency welding and sizing processes, and guarantees reliable large-batch production of standard OCTG casing and tubing.
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.