M200 Orbital TIG Welding Power Source (Air-Cooled & Water-Cooled) — hero shot

M200 air-cooled bilingual touchscreen HMI

M200 air-cooled rear panel — weld-head and gas connections

M200 water-cooled closed-loop chiller module

M200 water-cooled power source with orbital weld head and tube fixturing

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M200 · Orbital TIG ASME BPE (orbital weld parameter control) AWS D18 (sanitary tubing GTAW) SEMI F78 (semiconductor tube welding)

M200 Orbital TIG Welding Power Source (Air-Cooled & Water-Cooled)

Name: M200 Orbital TIG Welding Power Source (Air-Cooled & Water-Cooled)
Brand: Kedes Machine
SKU: M200 · Orbital TIG

200 A enclosed orbital TIG welding power source — drives all five Astra Arc weld-head families (ND, MC, H, 8H benchtop and micro) across OD 6.35 – 152 mm. Mechanically and electrically compatible with U.S.-brand M200-family welders, so existing collets, fixturing and validated weld procedures transfer directly. Air-cooled for portable / intermittent work; water-cooled for 100% duty continuous production.

See all 5 compatible weld heads

OD range

Ø 6.35 – 152 mm (1/4" – 6")

Welding current

5 – 200 A

Process

Orbital TIG (GTAW)

Compatibility

U.S. M200-family weld heads

TYPICAL REPLY · 1 WORKING SHIFT (GMT+8)

01 Model Comparison

Pick your size — 2 models in the series.

	M200 Air-Cooled Fan-forced · intermittent / field-portable	M200 Water-Cooled Closed-loop · 100% duty cycle continuous
Cooling system	Fan-forced air	Closed-loop water (integrated chiller)
Duty cycle	Intermittent — sized for connected head	100% continuous at 200 A
Best for	Small OD, intermittent, field-deployable	Continuous production, large OD, cleanroom
Welding current	5 – 200 A	5 – 200 A
OD range	Ø 6.35 – 152 mm	Ø 6.35 – 152 mm
Power input	Single-phase AC 220 V	Single-phase AC 220 V
HMI	EN / CN bilingual touchscreen	EN / CN bilingual touchscreen
Program memory	Full library · USB import/export	Full library · USB import/export
Shielding gas	Argon / argon-mix · integrated solenoid	Argon / argon-mix · integrated solenoid
Cleanroom suitability	Fan noise + dust ingestion → not preferred	Quieter · no fan ingestion → cleanroom-ready
External chiller required	No	No (chiller module included)
Compatibility	U.S. M200-family welders	U.S. M200-family welders
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02 Working Principle

How the M200 platform drives orbital TIG welding

Orbital TIG welding clamps a rotating tungsten electrode inside an enclosed chamber around the tube joint, then executes a programmed sequence — gas pre-purge, arc initiation, current ramp, rotation and pulse modulation, downslope, post-purge — under closed-loop parameter control. The M200 power source is the controller and current supply at the centre of that sequence. Its bilingual touchscreen HMI stores full weld programs (current, voltage, rotation speed, pulse, gas) per pipe size and material, recallable by ID for batch repeatability. The air-cooled variant sizes thermal dissipation to intermittent and field-portable work — no chiller, smaller footprint. The water-cooled variant adds a closed-loop coolant circuit that absorbs heat at source, enabling sustained 200 A operation indefinitely. Both variants are mechanically and electrically compatible with the major U.S.-brand M200 weld heads — collets, gas hoses and validated weld procedures transfer directly, so a fab shop already invested in M200 fixturing can adopt the Astra Arc controller without re-qualifying procedures.

M200 · Orbital TIG working principle diagram

03 Key Features

Built for the job site.

// 01

Drives 5 weld-head families on one controller

ND (4 enclosed heads, sanitary/process), MC (4 enclosed heads, widest OD), H (3 compact heads — 5H/10H Swagelok-compatible), 8H benchtop (½″ micro), 8H handheld (½″ portable). One power source covers OD 6.35 – 152 mm across enclosed, compact and micro form factors.

// 02

U.S. M200 cross-brand compatibility

Mechanical and electrical interface matches the major U.S.-brand M200-family welder. Existing weld heads, collets, gas hoses and validated weld programs transfer directly — no re-qualification required.

// 03

Bilingual EN / CN touchscreen HMI

Full program library with USB import / export. Procedures stored per pipe size and material, recallable by ID. Required for batch traceability on ASME BPE and semiconductor weld audits.

// 04

Closed-loop arc parameter stability

Cooler internal electronics (water-cooled variant especially) means less current drift over long welds — repeatable arc voltage and pulse profile, the prerequisite for ASME BPE and SEMI F78 weld consistency.

// 05

200 A across the full OD range

Both variants deliver 200 A peak. Water-cooled sustains 200 A continuously (100% duty); air-cooled intermittently. Match to head size and duty cycle — MC158 (Ø 152 mm) and 125ND (Ø 114 mm) at full current need water-cooled.

// 06

Single-phase 220 V — drop-in installation

Standard single-phase 220 V supply. No three-phase drop required. Fits cleanroom skids, refurbishment retrofits and field-portable installations without site electrical work.

04 Industry Applications

Where this series earns its keep.

Pharmaceutical WFI · CIP · bioprocess

ASME BPE-compliant orbital welding for WFI loops, CIP/SIP piping and bioprocess transfer lines. Water-cooled variant required for cleanroom integration and continuous-duty WFI fab.

See pharmaceutical wfi · cip · bioprocess solutions

Semiconductor UPW · gas distribution

SEMI F78-grade welding for ultra-pure water and process gas tube networks in semiconductor cleanrooms. H Series (5H / 10H Swagelok-compatible) is the default head family for cleanroom micro-tube work.

See semiconductor upw · gas distribution solutions

Food, dairy & brewery sanitary lines

3-A and EHEDG-spec orbital welding for dairy CIP, brewery wort and food-process tube networks where weld bead consistency controls cleanability.

See food, dairy & brewery sanitary lines solutions

05 Weld-Head Options

One controller, five weld-head families.

Enclosed · Sanitary & process

ND Series

OD 6.35 – 114.3 mm · 4 heads (40ND · 65ND · 115ND · 125ND). Fully enclosed inert chamber for hygienic sanitary and process tube welding.

Enclosed · Widest OD coverage

MC Series

OD 6.35 – 152 mm · 4 heads (MC40 · MC80 · MC118 · MC158). Enclosed family covering the widest OD range — up to 6" pipe at full current.

Compact enclosed · Swagelok compatible

H Series

OD 6.35 – 50.8 mm · 3 heads (5H · 10H · 20H). Compact enclosed heads; 5H / 10H Swagelok-compatible for tight micro-tube work.

Precision micro · Fixed work-station

Benchtop

OD 6.35 – 12.7 mm · 1 head. Fixed bench station for high-throughput micro-fitting and instrument-tube welding.

Precision micro · Portable

Micro Welder

OD 6.35 – 12.7 mm · 1 head. Hand-portable micro welder for in-place ¼ – ½" tube joints where a bench station won't reach.

06 FAQ

Common questions about the M200 · Orbital TIG.

Can't find your answer?

Air-cooled or water-cooled — which should I order?

Air-cooled for small-OD (typically up to 2"), intermittent welding, and field-portable / shop floor work where chiller plumbing isn't practical. Water-cooled for continuous-duty production (4+ hour shifts on the same head), large-OD welding with MC158 / 125ND at full current, ASME BPE / SEMI F78 work where parameter consistency is the only acceptance criterion, and cleanroom integration where fan noise and dust ingestion would fail audit. If unsure between the two, water-cooled adds margin in every dimension.

Which weld head do I need for my pipe size?

OD 6.35 – 12.7 mm (¼ – ½″) — H Series 5H or 10H (Swagelok compatible), or 8H benchtop/handheld. OD 6.35 – 25.4 mm — H Series 10H or 20H. OD up to 40 mm — 40ND, MC40. OD up to 65 mm — 65ND, MC80. OD up to 100 mm — 115ND, MC118. OD up to 114 mm — 125ND. OD up to 152 mm (the largest) — MC158. The M200 power source drives all of them; pick head by OD and application class (sanitary enclosed vs micro precision vs portable).

Is the controller really compatible with existing U.S. M200 heads?

Yes — same mechanical and electrical interface. The major U.S.-brand M200-family weld heads, collets, gas hoses and program files transfer directly. Fab shops already invested in M200 fixturing can drop in the Astra Arc controller without re-validating weld procedures. We will provide a compatibility-confirmation memo per installation if your QA process requires it.

Does it integrate with downstream weld-record / QA software?

Weld parameters (current, voltage, rotation, gas, time) export over USB as structured logs. Tooling for direct integration with the major weld-record platforms (Magnatech CWS, Polysoude X-Records) is on the roadmap; in the interim, the USB export is the standard QA bridge.

What's included in the standard ship-out?

M200 power source (200 A), bilingual operator manual (EN / CN), two-year limited warranty, calibration report and factory test record. Water-cooled variant additionally ships with the closed-loop coolant circuit (chiller module). Weld heads, collets and fixturing are ordered separately per pipe size — specify pipe OD range at quotation for a complete head recommendation.

Next step

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Send us your spec sheet, pipe schedule, or drawing — our engineers reply with pricing, lead time, and recommended models.

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