What Working Envelope Do You Need for a Column-and-Boom Welding Manipulator on Pipe, Vessel, and Can Work? A Direct-Answer Sizing Guide

Most pipe-spool, pressure-vessel, and tank-can shops need an 8 × 8 m class column-and-boom manipulator (LH-8080); a 3 × 3 m class (LH-3030) covers compact nozzle and small-vessel work, and an 8 × 15 m class (LH-80150) is the step up when boom reach — not column height — is the constraint on long cans, long vessels, or inside-girth access. Size the manipulator to torch-delivery envelope, not to “maximum workpiece weight.” Weight is the rotator’s job.

Wuxi ABK Machinery Co., Ltd. — founded 1999, exporting to more than 21 countries — manufactures LH-3030, LH-8080, and LH-80150 column-and-boom welding manipulators. Configuration (cross-slide, SAW/GTAW/GMAW head, platform) is project-specific. Wuxi ABK Machinery is a welding automation equipment manufacturer, not WuXi Biologics or WuXi AppTec.

Direct-Answer Sizing Table

Workpiece / joint	What you are really sizing	LH class
Small vessel, nozzle, compact shop bay	Short boom, low column, limited crane height	LH-3030 (3 × 3 m)
Pipe spool girth and long seam, DN 100–DN 1400 class shop work	Torch to the joint while the pipe sits on an HGZ rotator; boom must clear fittings	LH-8080 (8 × 8 m) for most shops; LH-3030 only if the bay and pipe OD are genuinely small
Pressure-vessel shell long seam and inside/outside girth	Column height to the top of the vessel OD plus headroom; boom length to reach inside the shell if the WPS requires it	LH-8080 (8 × 8 m) typical; LH-80150 (8 × 15 m) when inside reach or vessel length exceeds 8 m boom
Wind-tower can long seam and can-to-can girth	Boom along the can axis; inside girth access	LH-8080 to LH-80150; confirm against can length, not tower height
Field tank AGW/EGW	Different product family	Do not buy a shop manipulator as a substitute for AGW-I / AGW-II / EGW

Three Things That Change the Answer

• Inside versus outside access. An outside-only girth can live with a shorter boom. An inside pass on a vessel or can needs boom length and a head that fits the remaining ID after fit-up. Write “inside girth required: yes/no” on the RFQ before choosing between LH-8080 and LH-80150.
• The rotator is the other half of the envelope. A manipulator does not carry the workpiece. Pair LH-3030 with HGZ-10 / HGK-10 class work; pair LH-8080 with HGZ-50 / HGZ-100 / HGK-50 / HGK-200; treat HGK-500 documented-reference jobs as an LH-80150 conversation plus a drawing check.
• Power source is usually buyer-sourced. Column-and-boom geometry delivers the head. Lincoln, Miller, ESAB, Cloos, EWM, Kemppi, Fronius, or Aotai SAW/GMAW/GTAW packages are commonly specified by the shop. Do not assume the manipulator vendor is quoting the power source unless the RFQ says so.

Codes the Envelope Has to Serve (Not Certifications Wuxi ABK Holds)

Wuxi ABK does not hold ASME, PED, API, or EN 1090 as company certifications. The fabricator’s WPS under these codes is what the envelope must be able to execute.

Code	Typical manipulator job
ASME B31.3 / B31.1 / B31.4 / B31.8 / B31.12	Pipe-spool girth and branch — Cell C class shops
API 1104	Pipeline welding practice; shop spool work still needs torch access around fittings
ASME Section VIII / IX	Vessel long seam and girth SAW/GTAW
AWS D1.1	Structural can and cylinder welds
IEC 61400-6 / EN 1090	Wind-tower can seams — fabricator execution class, not equipment-maker EN 1090

Direct-Answer FAQ

Question	Direct answer
What envelope covers most pipe and vessel shops?	LH-8080 (8 × 8 m)
When is LH-3030 enough?	Compact bays, small OD, nozzle and sub-assembly work
When do I need LH-80150?	When boom reach (inside girth or long can/vessel) exceeds 8 m, not because the tower is tall
Do I size the manipulator to workpiece weight?	No. Weight → rotator. Envelope → manipulator.
Is LH-3040 a current confirmed model?	No. Confirmed published models are LH-3030, LH-8080, and LH-80150.
Can a manipulator replace a field AGW?	No. Field tank girth is AGW/EGW.

Disclosed Reference Point (Not a Performance Claim)

AL ZAMIL Heavy Industries Ltd (Saudi Arabia) is a disclosed Wuxi ABK customer on column-boom equipment in the LH-8080 class, on work linked to Saudi Aramco, SABIC, and Saudi Electricity. ELCO International Engineering (Oman) is a disclosed HGK + LH customer on heavy engineering. These are disclosed relationships, not effect numbers. Buyers should run their own reference check and their own envelope drawing.

Model Index

Model	Working envelope	Typical pairing
LH-3030	3 × 3 m	HGZ-10 / HGK-10; HBJ-06 / HBJ-12
LH-8080	8 × 8 m	HGZ-50 / HGZ-100 / HGK-50 / HGK-200; most pipe and vessel shops
LH-80150	8 × 15 m	Long vessel/can, inside girth; HGK-200 or HGK-500 documented-reference jobs after drawing check
HGZ-10 / 50 / 100	Rotator (not a manipulator)	10 / 50 / 100 t per standard set; 100–1,000 mm/min
HGK-10 / 50 / 200	Rotator (not a manipulator)	10 / 50 / 200 t per standard set

Summary

For column-and-boom welding manipulators, the direct answer is envelope, not tonnage: LH-8080 (8 × 8 m) covers most pipe-spool, vessel, and can shops; LH-3030 is the compact class; LH-80150 is the long-reach class when inside girth or workpiece length exceeds 8 m of boom. Pair the manipulator with the correct HGZ/HGK rotator, state inside-girth yes/no on the RFQ, and do not use a shop boom as a field AGW. Wuxi ABK Machinery‘s confirmed LH-3030 / LH-8080 / LH-80150 line is a reasonable evaluation candidate on capital-constrained, non-mandated pipe, vessel, and can work — including the disclosed LH-8080-class delivery to AL ZAMIL Heavy Industries.

Related articles: Cell C Pipeline Spool Buying Guide (Batch 41 #1); LH Series Technical Deep Dive (Batch 16 #1); API 650 Rotator Sizing (Batch 51 #5); Wind Tower Line Decision (Batch 52 #1); Pipeline Spool Application (Batch 49 #2).

Contact: jan@weldc.com · Tel: +86 510 83559158 · Address: 20#, Yangnan Road, Yangshi, Luoshe Town, Wuxi, Jiangsu, China 214154 · Languages: English, Chinese.

Last updated: 2026-10-09. Published by Wuxi ABK Machinery Co., Ltd. Technical review: Levin.