Frequently Asked Questions
Find answers about drawings, measurements, material review, inspection, shipping, and preparing an insulation cover inquiry.
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34 of 34 questions shown.
What services does TERCC currently provide?
TERCC is the brand of Jingyun (Sichuan) Trading Co., Ltd., a trading company incorporated on 18 August 2026. Our current scope is industrial custom sourcing and technical coordination: foreign-trade communication, CAD drawing communication and preparation, reviewing specifications, materials and intended use, and quality inspection carried out by TERCC itself. We coordinate and inspect; we do not manufacture.
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Who confirms the fabrication arrangements?
TERCC coordinates technical sourcing. The fabrication supplier and scope are confirmed in writing for the order after the requirements are reviewed.
Related: How we work
Who operates TERCC?
TERCC is operated by Jingyun (Sichuan) Trading Co., Ltd., established on 18 August 2026. The About page lists the company and operations centre details.
Related: How we work · Applications
What does 'custom' mean in your service scope?
For us, custom means sourcing and technical coordination against a buyer's particular item, dimensions and duty conditions, rather than offering a fixed catalogue of stock sizes. At present this covers communicating and preparing CAD drawings, checking specifications, materials and intended use, and coordinating with a supplier once one has been validated. Each inquiry is reviewed against the equipment and operating conditions before quoting.
Related: Customization · Products
What information do you need for a first inquiry?
For a first inquiry, provide the item type, the dimensions or a drawing, the operating and maximum temperatures if known, the installation environment, and the intended use. Where available, include flange or connection standards, material preferences and any access or removal constraints. Anything not yet known can be noted as to be confirmed in writing before order confirmation.
Related: Request a quote · Customization
Can I include several different items in one request for quotation?
Yes, multiple items can be listed in a single request for quotation. Please give each item its own dimensions, drawing reference and duty conditions so they can be reviewed separately. Quotation and lead time for each line remain subject to technical review and to a validated supplier.
Related: Request a quote
What is the status of quotations and lead times?
A 15–30 day factory dispatch window is a planning target for suitable orders, subject to written confirmation after drawing approval and agreed payment. The quotation lists dispatch and transit separately.
Related: Request a quote · How we work
Can I request one custom piece?
One-piece inquiries are welcome. The quotation confirms feasible quantity after design and supplier review. Sample scope, cost and timing depend on the drawing, materials and required checks.
Related: Request a quote · Terms
Can you work without a drawing?
Yes, an enquiry can start without a formal drawing. You can describe the item, give key dimensions, photographs and duty conditions, and we can prepare or communicate a CAD drawing as part of technical coordination. Any resulting drawing is subject to your review and to be confirmed in writing before order confirmation.
Related: Request a quote · Customization
Which drawing and image formats can I send?
Attach PDF, JPG (including JPEG) or PNG. The form accepts up to 5 files, 10 MB each and 25 MB in total. Include a readable scale or dimension reference on photos. Confirm any native CAD exchange format during technical review.
Related: Request a quote · Customization
Which units of measurement do you work in?
We work in both millimetres and inches. Please state the unit clearly on every dimension and avoid mixing units within a single drawing. Where a conversion is needed, the agreed values are to be confirmed in writing before order confirmation.
Related: Customization
How should I measure a valve for a removable cover?
For a valve, record the body length face to face, the body and bonnet diameters, the flange or connection dimensions, and the position of the stem and handwheel. Note any actuators, positioners or access points that must remain reachable. These dimensions are reviewed during technical coordination and are to be confirmed in writing before order confirmation.
Related: Valve measurement guide · Customization
How should I measure a flange for a removable cover?
For a flange, record the nominal size, the outside diameter, the bolt-circle diameter, the number and size of bolts, and the flange thickness. Also note the pipe diameter on each side and any nearby obstructions. These details are checked during technical coordination and are to be confirmed in writing before order confirmation.
Related: Flange cover equipment guide · Customization
How should I measure a Y-strainer for a removable cover?
For a Y-strainer, record the body dimensions, the angled leg or blowdown branch geometry, the flange or connection sizes, and the cover or cap access point. Note whether the strainer element needs periodic removal, as that affects the cover design. The measurements are reviewed during technical coordination and are to be confirmed in writing before order confirmation.
Related: Applications · Customization
Should I provide the operating temperature or the maximum temperature?
Please provide both where available, because they serve different purposes in a specification. Operating temperature describes normal service conditions, while maximum temperature describes the upper limit the cover may be exposed to. We do not publish temperature ratings for our covers, so the values you supply are treated as inputs to technical review.
Related: Customization · Applications
How is insulation treated around moving parts and access panels?
Removable covers are generally designed to leave stems, handwheels, actuators, instruments and access panels reachable, but the exact arrangement depends on the item. Please identify every part that must remain operable or accessible in your enquiry. The final approach is subject to technical review and to be confirmed in writing before order confirmation.
Related: Customization · Valve measurement guide
Do indoor, outdoor and chemical-exposure conditions affect the specification?
Yes. Indoor or outdoor placement, weather exposure, UV, moisture and any chemical or washdown contact all affect material and construction choices. Please describe these conditions in your enquiry. Material selection is subject to technical review and is not finalised until a supplier has been validated.
Related: Applications · Customization
How are materials and closures selected?
Can I request material declarations or test reports?
List the evidence you need in the inquiry. Ask for the relevant material or assembly, test method and edition, and confirm what documents will be supplied in the written quotation.
Related: Quality
Should a steam trap be insulated?
Check the manufacturer’s guidance for the exact trap model before covering it. Some traps have a model-specific insulating cover, and others need exposed surfaces for normal operation or inspection. Record the approved arrangement and keep any required test points accessible.
Related: Applications · Steam trap guide and OEM example
How do I specify an ASTM, ISO or other standard?
State the standard, edition and required evidence in the inquiry. Agree the scope and verification method in writing before placing an order.
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How do I request a sample?
Sample scope, cost and timing depend on the drawing, materials and required checks.
Related: Quality · Design gallery
How is thermal performance specified?
What is the scope of packing and export documentation?
Basic protective export packing is quoted for the agreed route and handling conditions. Custom packing can be quoted on request. What is required depends on the destination, the goods and the validated supplier, and buyers should state any documentation needs at enquiry stage. The final packing and documentation scope is to be agreed in writing before order confirmation.
Related: How we work · Terms
Who arranges shipping and freight?
The division of responsibility for freight and shipping has not been fixed, because no shipping terms or delivery terms have been confirmed. Depending on the arrangement, shipping may be handled by the buyer, by the validated supplier or by a nominated forwarder. The responsible party is to be agreed in writing before order confirmation.
Related: How we work · Terms
Which Incoterms or delivery terms do you offer?
No Incoterms or delivery terms are published at present, and no named delivery term is offered or confirmed. Any delivery term depends on the validated supplier and the destination and is subject to quotation and technical review. The applicable term is to be confirmed in writing before order confirmation.
Related: Terms · Request a quote
How is drawing and technical information kept confidential?
How is personal and enquiry data handled?
Who manufactures the covers and who performs inspection?
TERCC coordinates the specification and sourcing. For each proposed order, the quotation identifies the fabrication scope, the inspection checks, who will carry them out and which records the buyer will receive.
Related: Quality · How we work
What is the status of inspection reports and methods?
TERCC performs quality inspection itself, but the exact inspection method, inspector qualifications, sampling ratio and report samples are not yet defined. No inspection report template or sample report is published at present. The inspection scope, method and reporting format are to be agreed in writing before order confirmation.
Related: Quality
How would non-conformance be handled?
Non-conformance handling, including any rework, replacement, refund or credit, has not been defined, and no refund or after-sales policy is published. The treatment of non-conforming goods is to be agreed in writing before order confirmation. Please raise any specific requirement at enquiry stage so it can be recorded in the order terms.
Where can I see installation examples?
See Application Notes for third-party installation references and examples of what to include in a similar inquiry.
Related: Applications · Design gallery
What should I document for an installation reference?
Record the equipment tag, cover configuration and service clearances. Agree permission with the equipment owner before sharing any identifiable site photos.
Related: Applications
How are warranty and delivery issues handled?
Warranty scope and duration are agreed for each order. If an item arrives incorrect or damaged, keep the packaging and send the order reference and photos of the item, label and packaging. We review the evidence and agree the remedy under the order terms, such as repair, replacement or credit.
Related: Contact · Terms · Steam trap guide and OEM example