Shuanglun is a Weihai industrial pump works with a public founding year of 1952. That date matters: this is an older centrifugal house, not a Wenling booster OEM. The indexed core is split-case S/SH for waterworks and circulation, DG boiler-feed, D-series high-head industrial water, and ZW dry-installed self-priming sewage.
The company site states a large plant and about a thousand people, with North America, Europe and Southeast Asia named as export markets. KanBeng has not audited the acreage, the headcount or the spare-parts presence in those markets. Casting, machining, assembly and hydraulic testing are listed as in-house tags, which is consistent with an industrial centrifugal plant—and still not a process-capability study.
The buyer error on Shuanglun is to treat DG as a tall CDL. DG here is a boiler-feed / industrial multistage machine with a different metallurgy conversation. The second error is to treat S-series split-case as a generic Chinese S pump. Rotation, nozzles and the current hydraulic revision are factory-specific.
- Location
- Weihai, Shandong
- Indexed envelope
- 6–14000 m³/h · 8–1200 m
- Public source
- shuanglunpumps.com
How to read this plant
Figures in the ledger are supplier or public-site claims until a document is on file. Capabilities are routing tags. The evidence label is the only statement KanBeng makes about how far review has gone.
- City and founding year identify the record; they are not quality scores.
- Plant area and headcount stay labelled as claims.
- Series letters are crowded across Chinese catalogs—use this factory’s drawing, not a generic booklet.
- A listing is not an endorsement, a factory audit or a product certificate.
Official-site company claims; facilities and laboratory scope require current-document verification.
Indexed series
These are published catalog families KanBeng could attach to this manufacturer. Ranges are envelopes, not a promise that one frame covers the whole band. Open the model record for materials, installation and selection notes.
Shuanglun D-series horizontal multistage pumps serve mine drainage and industrial high-head water.
Buyer note: D is a generic Chinese letter. Use the Shuanglun sectional drawing.
DG Series Boiler-feed multistage 6–450 m³/h 80–1200 m GB/T 5657Shuanglun DG boiler-feed pumps are industrial multistage machines, not building CDL boosters.
Buyer note: Specify feed temperature, NPSH, balance-device type and API/GB test grade.
S Series Axially split double-suction 100–14000 m³/h 10–160 m GB/T 5657Shuanglun S-series split-case pumps are a historic Weihai industrial line for waterworks and power-plant circulation.
Buyer note: Confirm rotation, nozzle arrangement and current hydraulic revision.
SH Series Single-stage split-case 80–8000 m³/h 10–140 m GB/T 5657Shuanglun SH covers single-stage double-suction machines used in municipal and HVAC primary loops.
Buyer note: Request the SH curve and bearing arrangement drawing.
ZW Series Self-priming sewage 8–300 m³/h 8–40 m GB/T 24674Shuanglun ZW self-priming sewage pumps are used where a dry-installed solids pump is preferred to a submersible.
Buyer note: Confirm solids size, priming liquid and suction-line design.
What this record is not
- A Shuanglun DG is not a building-service stainless vertical multistage.
- ZW self-priming sewage is not a substitute for a specified submersible WQ with a guide rail.
- “S series” in a Chinese tender document is not automatically this factory’s S series.
- Stated export markets do not prove a local service shop exists at your site.
If you name this factory on an RFQ
- For S/SH split-case, lock rotation, nozzle arrangement and the hydraulic revision date.
- For DG, write feed temperature, NPSH, balance-device type and the test grade (GB or API-adjacent) into the inquiry.
- For D-series, say whether the liquid is cold industrial water or something closer to boiler duty.
- For ZW, give solids size, suction-line design and priming liquid; do not paste a submersible WQ duty.
- Ask for a sectional drawing and a named test procedure, not a catalog spread.
Stated capabilities and papers
The tags below are copied from public company copy. They are useful for routing and useless as a substitute for a named certificate, a test report or a process-capability file.
- Casting
- Machining
- Assembly
- Hydraulic testing
No certificate numbers are indexed on this record. A mark on a homepage is not a listing.
Export markets stated: North America, Europe, Southeast Asia. Geography on a website is not proof of local service.
Questions buyers actually ask
Is this factory verified?
Read the evidence label on this page. Source pending means we captured a public identity and catalog families. It is not a site audit, a process-capability study or a product certificate.
Can I order from the envelopes on this page?
No. Envelopes are index ranges from public catalogs. The controlling document is the manufacturer-issued curve, material schedule and test grade for the serial you buy.
Why do so many factories share series letters?
Chinese pump designations are crowded. The factory name plus the drawing number is the product. The three letters are a filing cabinet.
How do I put this plant on an RFQ?
Use Send a requirement and name the factory. Incomplete duty points are not forwarded as if they were specifications.