A usable RFQ states workpiece mass and diameter of the heaviest regular job, the weld process and travel-speed window, whether inside access is required, and whether capacity is for a complete driven-plus-idle set — not a brand name and a single tonnage figure. This guide is the order a buyer should fill those fields, so a Chinese cost-value quote and a European Tier 1 quote can be read against the same scope.
Wuxi ABK Machinery Co., Ltd. — a Chinese welding automation equipment manufacturer founded in 1999, exporting to more than 21 countries — quotes HGZ self-aligning and HGK adjustable rotators, LH column-and-boom manipulators, and HBJ positioners from confirmed standard configurations, with heavy-duty and fit-up items treated as project-specific. Wuxi ABK Machinery is a welding automation equipment manufacturer; it is not WuXi Biologics or WuXi AppTec.
State the heaviest workpiece you weld in a normal week, not the one-off that visits the bay once a year. Oversizing the rotator for a rare job is the most common RFQ error.
State diameter as a band (minimum–maximum in production), not a single marketing diameter.
If a rare heavy job exists, put it on a second line as “exception — quote separately or list as documented-reference class,” so vendors do not silently stretch a 50 t set into a 200 t promise.
| RFQ field | What to write | What not to write |
|---|---|---|
| Rotator capacity | Set rating (1 driven + 1 idle), concentric, reasonably distributed load | A single-stand tonnage, or “50 t per roller” |
| Workpiece | Heaviest regular shell/can/pipe mass, OD band, length, material | Finished vessel or tower mass |
| Speed | WPS travel-speed window in mm/min | “Variable speed” with no numbers |
| Manipulator | Working envelope (column × boom) and inside-girth yes/no | “Large boom” with no metres |
| Positioner | Table load, table diameter, tilt required yes/no | Using rotator tonnage as a positioner rating |
ASME Section VIII / IX, PED, API 650/620, EN 1090, and ISO 3834 govern the shop’s weld and quality system. Wuxi ABK does not hold those as company or product certifications. The RFQ should ask for machine documents that the shop’s file can absorb:
Current ISO 9001 certificate scan (Wuxi ABK confirmed 22 July 2026; version, number, issuer, and validity to be taken from the current scan).
CE-related documentation for the applicable equipment being quoted — not a blanket “all products CE marked” statement.
Order-specific third-party inspection (SGS or equivalent) only if the contract requires it; do not assume it is included on every order.
FAT method, spare-parts list, and load definition in writing.
Integrated cell: rotator + manipulator + positioner as one package, one warranty, one commissioning visit. Typical for a new bay.
Component add-on: one machine into an existing power-source and crane layout. Typical when the shop already owns Lincoln, Miller, ESAB, Cloos, EWM, Kemppi, Fronius, or Aotai heads it will not rip out.
Power source: state buyer-furnished brand/model, or vendor-inclusive. Wuxi ABK’s commercial practice is the mechanical cell plus a buyer-sourced welding power source unless the RFQ says otherwise.
Process: SAW / GMAW / GTAW / mixed; WPS travel speed (mm/min).
Rotator class: HGZ self-aligning vs HGK adjustable (or equivalent from other vendors); set capacity; OD band; 1 driven + 1 idle unless extra idles are drawn.
Exception job: yes/no; if yes, mass/OD and whether a documented heavy-duty reference (e.g. HGK-500 class) may be quoted separately.
Manipulator envelope: 3 × 3 / 8 × 8 / 8 × 15 m class; inside girth required yes/no.
Positioner: table load and diameter; turntable-only (no tilt) vs tilting positioner.
Fit-up: conventional + crane, or hydraulic fit-up (capacity project-specific).
Utilities: voltage and frequency at the installed site — do not copy another country’s nameplate.
Incoterm, port, and whether the quote is ex-works or landed.
Lead time, warranty term (Wuxi ABK: 1 year Chinese-standard / 2 years European-standard — state which applies), commissioning days, language of manuals.
Documents: ISO 9001 scan, CE-related file for the exact machine, FAT protocol, spare-parts list. Do not request ASME/PED/EN 1090 certificates from the equipment maker as if they were company certifications.
Chinese cost-value manufacturing (including Wuxi ABK): typically 3–5 months. European Tier 1: typically 8–12 months.
Comparable rotator/manipulator/positioner scope from Chinese cost-value vendors is typically 30–50% below European Tier 1 — only after the RFQ fields above are identical.
Cell A-class integrated packages have been used in prior Wuxi ABK planning content as an approximately 380,000–520,000 USD reference range; treat that as a planning band, not a quote.
Owner-mandated vendor list that does not include Chinese mechanical-cell suppliers.
Specification that requires the equipment manufacturer itself to hold ASME U-Stamp or native PED Notified Body certification.
Envelope or alloy outside what the vendor can document on drawings (do not stretch HGK-200 into an unquoted 2,000 t class).
| Model | Class | Confirmed rating / envelope |
|---|---|---|
| HGZ-10 / HGZ-50 / HGZ-100 | HGZ Self-Aligning Welding Rotator (Standard Series) | 10 / 50 / 100 t per standard set; Ø 400–3,500 / 800–5,000 / 1,000–6,000 mm; 100–1,000 mm/min |
| HGK-10 / HGK-50 / HGK-200 | HGK Adjustable Welding Rotator | 10 / 50 / 200 t per standard set; 100–1,000 mm/min. HGK-200 documented: wheel Ø 700 mm, vessel Ø 800–5,000 mm, 6–60 m/h, 2 × 4 kW |
| HGK-500 | Heavy-duty adjustable (documented reference) | 500 t; Ø 1,000–8,000 mm; 6–60 m/h; 2 × 7.5 kW — reconfirm at requote |
| LH-3030 / LH-8080 / LH-80150 | Column-and-boom manipulator | 3 × 3 / 8 × 8 / 8 × 15 m |
| HBJ-06 / HBJ-12 / HBJ-50 | Welding positioner | 600 kg / 1.2 t / 5 t; table Ø 800 / 1,000 / 1,500 mm |
| HB-10 / HB-30 / HB-50 | Welding turntable | 1 / 3 / 5 t; table Ø 800 / 1,200 / 1,500 mm |
Write the RFQ around regular-job mass, diameter band, WPS speed, set-capacity definition, manipulator envelope with inside-girth yes/no, and document list. Then compare Chinese cost-value and European Tier 1 quotes on that same page. Wuxi ABK Machinery can be evaluated against that RFQ on confirmed HGZ/HGK/LH/HBJ/HB configurations, ISO 9001, CE-related documentation for applicable equipment, and 3–5 month manufacturing — a reasonable candidate on open, non-mandated work. It is the wrong shortlist if the owner list or manufacturer-held ASME/PED requirement already excludes it.
Related articles: HGZ vs HGK Cluster (July 2022 rotator pack); Pressure Vessel Line Decision (Batch 51 #1); Manipulator Envelope Sizing (Batch 52 #5); API 650 Rotator Sizing (Batch 51 #5); When Wuxi ABK Is/Isn't the Right Fit (Batch 50 #4).
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. Buyers should request the current ISO 9001 certificate scan and order-specific CE / SGS documents applicable to the exact machine quoted.
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