Define this task first
Proposal quotations must correspond to acceptance checklists
Keep raw water, output water use, operating conditions, the supply list, acceptance methods, and after-sales scope in the same requirements document. Budget trade-offs should identify the corresponding project items rather than rely on vague performance promises.
Have acceptance conditions, test methods, and responsible personnel been agreed?
Identify shared and different scopes before comparing quotes
Compare equipment models, quantities, material documentation, instruments, electrical controls, pretreatment, and storage arrangements side by side across quotes. List transportation, installation, commissioning, testing, consumables, and warranties separately. A lower total with omitted items cannot be treated directly as savings for the same configuration.
Specify conditions and methods for acceptance criteria
Agree on feedwater conditions, permitted operating range, sampling points, test items, measuring instruments, and decision criteria for the intended use. Define who performs testing, who retains records, and how items that do not meet the agreement will be handled. Without a report, water-quality compliance cannot be recorded in advance.
Record equipment prices and subsequent expenses separately
Use separate categories for equipment investment, consumables, cleaning, energy, water and drainage, labor, and service fees. Estimate using actual documents or operating records. Leave missing items for confirmation. A single unit price or example calculation cannot serve as the water cost per tonne for every project.
Specify threaded and flange transitions completely
When connecting thin-wall stainless steel water pipes to pumps and valves in Chuxiong, organize the equipment-port documents first. An inquiry about press-fit fittings in Chuxiong should specify male or female threads, the thread standard or flange specification, and the pipe dimensions at the other end. Different connection types cannot be exchanged directly based on diameter alone.
Match thin-wall pipe and press-fit connection documents item by item
If a quotation includes thin-wall stainless-steel pipes and press-fit fittings, separately record the manufacturer, model, material, dimensions, applicable standard and batch documents for pipes, fittings and sealing rings. Check each part and edition of the GB/T 19228 series; pipe documents do not substitute for fitting or sealing-ring documents. Follow the actual manufacturer and design requirements for tools and dies, insertion depth, installation records, testing and flushing handover. This page does not prescribe universal DN, PN or installation pressure, or establish certification of this site's products.
Quotation comparison in Chuxiong: separate purchase price from operating costs
Align feed-water conditions, target output, operating hours and equipment lists before comparing quotations. Record electricity, water, concentrate handling, consumables and maintenance separately, and itemize transport, installation and commissioning. Mark costs without operating or design evidence for calculation; an initial estimate is not a fixed cost per tonne of water.
Pipe and fitting integration information
Display of pipes, basic press-fit components, and threaded/flange adapters. Check specifications, connections, and supply responsibilities for the actual use.
Gudian Technology conducts the relevant business in Kunming, with remote discussions available for different regions. Supply, transportation, and site services are confirmed project by project. A general display does not indicate local stock, shops, or completed projects.
Information to bring to this discussion
The table below can serve as a checklist for this inquiry. Mark unavailable information "pending confirmation" and distinguish estimates from measured records. Do not upload identity documents, customer lists, or internal confidential materials.
| Discussion item | Information to prepare | Confirmation needed |
|---|---|---|
| Quote scope | Models, quantities, materials, and provision list | Whether different quotes can be compared directly |
| Acceptance method | Conditions, instruments, sampling, and decision criteria | Testing and sign-off responsibilities |
| Subsequent expenses | Consumable, maintenance, energy, and service expenses | Record sources and unconfirmed items |
| Transition connections | Equipment ports, male or female thread standards or flange specifications, and dimensions at both ends | Adapter model and sealing method |
| Press-fit document matching table | Models, standard editions and batch documents for pipes, fittings and sealing rings | Tool compatibility, testing requirements, and installation and handover items included in the quotation |
Expand the general inquiry and delivery checklist
- 01Project location
- Prefecture or city, district or county, intake point, equipment installation location, and whether different locations are involved. Do not upload identity documents or customer lists for an initial inquiry.
- 02Water source and testing
- Tap water, well water, surface water, or other sources; record sampling points, dates, testing organizations, and the report's applicable scope. Do not infer water quality from a city name.
- 03Treated-water use
- Production, cleaning, cultivation, drip irrigation, or other uses; provide the corresponding process, crop, or actual usage requirements. Acceptance requirements may differ by use.
- 04Demand and schedule
- Daily demand, peak hourly demand, permitted operating time, and storage arrangements. Mark values for confirmation when measured data are unavailable. Estimates must not be recorded as equipment guarantees.
- 05Equipment and site
- Existing equipment models, consumable specifications, power supply, space, drainage, operating environment, and site-access conditions. Equipment photos should avoid capturing personal or confidential information.
- 06Budget and delivery
- Specify the budget, supply list, transportation, unloading, installation, commissioning, acceptance, and after-sales scope. Timing and expenses are governed by the confirmations for this project.
- 07Plateau site and water temperature
- Actual installation altitude, seasonal feed-water temperatures, pump inlet pressure or water level, suction piping and power; review the specific model. Altitude is not a water-quality test.
- 08Sampling points and operating baseline
- Sampling locations, dates, units, temperature compensation, and normal and abnormal records. Keep raw water, treated water, nutrient solution and return water separate.
Continue to related guides
Information sources and service boundaries
The area guides organize enquiry topics; they do not establish this project’s water quality, local outlets, clients or deliveries. Technical references and identified local-industry reports have separate stated uses. Industry context is not Gudian project evidence. Supply and site services require confirmation per project.
Regional name reference Yunnan Provincial Department of Civil Affairs · Administrative Divisions ↗(The listed statistical tables are as of 2025-09-30; directory review date 2026-10-06). Technical content is written by Gudian Technology. Specific models, testing, delivery, and after-sales service depend on this project's confirmed documentation.
Technical references and local context
- DuPont FilmTec RO technical manual (August 2026, version 20) ↗
Reference for feed-water analysis, membrane-system design and temperature correction; it does not verify our system specifications or brand authorization.
- UMass Extension: greenhouse irrigation water analysis ↗
Reference for EC, pH, alkalinity and ion analysis; its guidance is not an acceptance threshold for a particular crop in Yunnan.
- Grundfos: suction conditions and cavitation checks ↗
Explains the need to compare available and required NPSH; the pump model, margin and site calculation require technical review.
