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Equipment and spare partsBrowse manufacturers Search by manufacturerDirect supply of professional pipe cold cutting, weld-edge beveling, in situ flange resurfacing, and automated plate edge milling machinery manufactured by Zhejiang Aotai Machine Manufacturing Co., Ltd. We engineer and deliver heavy-duty stationary pipe lines, clamshell split-frame lathes, ID/OD mounted portable bevelers, high-purity orbital saws, and genuine HSS-Co tooling.
ZJAOTAI stationary pipe cutting and beveling machines (CNP high-speed series, CND heavy industrial series, OCM mechanical line, and OCF CNC automated machines) provide high-throughput cold prep for pipes from 16 mm up to 1420 mm OD with wall thicknesses up to 100 mm. The heavy-duty rigid beds, automatic radial hydraulic clamping jaws, and dual servo-driven tool carriages execute simultaneous square parting, external compound V/U-beveling, and internal boring without heat-affected zones or metallurgical distortion.
ZJAOTAI Split Frame clamshell portable pipe lathes (Mini, Standard, Heavy-Duty, and SFM/ODF series) feature a modular split-ring architecture that mounts around the OD of inline pipelines without breaking line integrity. Covering outer diameters from 10 mm (0.5") to 2100 mm (84"), the ultra-rigid heat-treated alloy frames utilize dual precision bearing assemblies, star-wheel mechanical feeds, and interchangeable pneumatic, hydraulic, or high-torque electric motors for clean cold cutting and beveling.
ZJAOTAI ID-mounted pipe beveling and facing machines (T-PIPE, Y-PIPE angled body, II-PIPE inline series, and ATCM precision facing tools) provide secure internal clamping and rapid weld preparation across pipe IDs from 14 mm to 850 mm. The hardened expanding mandrel blocks grip the inner wall securely, aligning the cutting head coaxially with the pipe centerline to generate accurate external bevels, flat face squaring, and internal counterboring for seamless socket and butt welding.
ZJAOTAI external OD-mounted pipe beveling machines (C-Narrow low-clearance design and C-II Auto Feed series) are engineered for tight-access boiler waterwall tubing, heat exchanger bundles, and condenser tubes ranging from 8 mm to 159 mm OD. The ultra-slim tool head fits into narrow tube pitch gaps down to 35 mm, while the patented C-II automatic radial tool feeding mechanism ensures effortless operation and mirror-smooth edge finishes for orbital TIG weld joints.
ZJAOTAI orbital pipe cutting machines (OSE standard orbital, OSK heavy orbital, and OSG/OSR compact series) execute burr-free square cuts and bevels on thin-to-medium wall stainless steel, titanium, Hastelloy, and copper piping from 6 mm to 330 mm OD. Operating via planetary rotation of an HSS saw blade around a stationary pipe clamped in self-centering multi-jaw collets, the cut produces zero deformation, zero chips inside the tube bore, and perfect 90° face squareness.
ZJAOTAI portable flange facing lathes (ID-mounted, OD-mounted mechanical series, and SSYI multi-axis CNC units) machine, resurface, and groove pipeline flanges from 50 mm to 3500 mm in diameter in situ. Powered by pneumatic or hydraulic motors with continuous spiral and concentric mechanical feeds, these machines produce flawless Flat Face, Raised Face, Ring Type Joint (RTJ) grooves, tongue-and-groove profiles, and ASME B16.5 compliant serrated finishes.
ZJAOTAI plate beveling and milling machines (auto-walking SKF-840, SKF-810, heavy SKF-900, and handheld SKF-15/K15 models) deliver superior weld-edge preparation on structural steel plates, pressure vessel shells, and shipbuilding panels from 6 mm to 100 mm in thickness. The self-propelled units travel smoothly along plate edges without guide tracks, producing bevel widths up to 80 mm at adjustable angles from 0° to 75° with cold-milled surface finishes of Ra 3.2–6.3.
To maintain peak cutting efficiency and precision tolerances across all ZJAOTAI machines, we supply a comprehensive range of genuine cutting tools and engineered consumables: HSS-Co (M42/M35) profile beveling and parting tool bits, indexable carbide inserts with multi-layer TiAlN PVD coatings, orbital HSS circular saw blades, double-enveloping worm gearboxes, expanding ID clamping blocks, hydraulic proportional pumps, and precision servo feed drives.
Our technical engineers analyze pipeline drawings, steel metallurgy (carbon, stainless, duplex, titanium), wall thicknesses, and specified weld prep profiles (V, U, J, compound bevels), tailoring the optimal machine model, drive type (electric, pneumatic, hydraulic), and custom clamping shoe sets.
ZJAOTAI machinery is field-proven across mainline oil and gas transmission pipelines, petrochemical refinery turnarounds, power generation boiler waterwall repairs, shipyard plate fabrications, and ultra-high purity pharmaceutical and semiconductor process skids.
Cold chip-cutting eliminates heat-affected zone (HAZ) embrittlement, slag, and pipe ovality. Manufactured in ISO 9001 and CE certified facilities using precision CNC machining centers, ZJAOTAI tools guarantee strict squareness tolerances (≤0.05 mm) and mirror edge finishes compliant with automated welding codes.
All ZJAOTAI machines are shipped directly from the factory floor in heavy-duty aluminum transit cases with full manufacturer test certificates. We provide an official 12-month warranty, fast replenishment of consumable HSS-Co tooling bits, carbide inserts, and drive replacement components.
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