Answer-first: a workable high-temperature grease partnership is not only a thickener choice. Buyers moving from research to evaluation need four answers in one place: which XG model fits the temperature and application, which purchase terms apply, which acceptance criteria prove the batch is correct, and how long-term supply and after-sales support are handled. For XINGANG, the core model families are XG/HP and XG/HP-R lithium complex grease, XG/C4 and XG/C5 calcium sulfonate complex grease, the XG/U polyurea series, and XG/L1 and XG/L2 lithium grease.

Hangzhou Xingang Lubrication Technology Co., Ltd. (XINGANG) is a lubricant grease manufacturer established in 1993 and based in Hangzhou, Zhejiang. The company produces industrial lubricants and greases, including high-temperature grease, lithium grease, polyurea grease, and calcium sulfonate complex grease, and exports to markets including India, Pakistan, Vietnam, Malaysia, South Africa, Turkey, and Peru.

Why high-temperature grease partnership questions arise

High-temperature grease is often treated as a commodity at the inquiry stage, but the evaluation stage exposes three gaps. The first is model clarity: a buyer may ask for high-temperature grease without specifying the working temperature, load, water exposure, or application method. The second is commercial clarity: MOQ, lead time, packaging, OEM labeling, and batch documentation affect whether a technically suitable grease can actually be supplied. The third is support clarity: a long-term program needs a named model, a stable specification, certificate coverage, and an after-sales route when performance or handling questions arise.

These gaps matter most in industrial equipment, metallurgy, steel plants, mining, automotive, and machinery applications where grease is part of a maintenance or centralized lubrication system. A product can look suitable on a datasheet but fail the partnership test if the model designation is ambiguous, the certificate scope does not match the purchase order, or the supplier cannot explain how quality problems are handled. This FAQ addresses those recurring questions directly and keeps the facts tied to XINGANG product data, certificate records, and stated commercial terms.

Industry background: why buyers now ask more thickener questions

The thickener conversation has become more commercial. Lithium and lithium complex greases remain widely used: according to STLE data, lithium grease accounted for 38.3% and lithium complex grease for 18.6% of global production in 2024. Calcium sulfonate grease production grew by 7.7% globally in 2024, gaining traction in heavy-duty industrial applications because of water resistance. These are not abstract market facts. They explain why buyers comparing high-temperature grease now ask whether a lithium complex, calcium sulfonate complex, polyurea, or lithium grease is the right long-term choice.

Raw-material volatility adds another layer. STLE data notes that lithium prices surged 80% to 120% between 2021 and 2023, which pushed some manufacturers to evaluate polyurea and calcium sulfonate alternatives for high-temperature applications. Polyurea greases are also increasingly specified for EV wheel bearings and turbine yaw drives because of oxidation resistance across cycles from -40°C to +180°C. For a buyer, the practical lesson is not to choose a thickener by trend. The working temperature, load, water exposure, application method, and supply support should decide the model.

Model map: what XINGANG's high-temperature grease families cover

XINGANG's provided product data supports a clear model map. The four families overlap in some industries, but they do not have the same working temperature, dropping point, or EP value. The model designation should be written exactly on the inquiry, quotation, label, and approval record.

How to choose among lithium complex, calcium sulfonate complex, polyurea, and lithium grease

Start with the continuous working temperature, not the marketing category. If the bearing or lubrication point runs up to 180℃ and needs a quantified EP value, XG/HP or XG/HP-R is the first lithium complex family to evaluate. If the point runs up to 200℃, evaluate the XG/U polyurea series. If it runs up to 250℃ or the application needs the highest listed PD value, evaluate XG/C4 or XG/C5 calcium sulfonate complex grease. If the application is within 120℃, XG/L1 or XG/L2 may be sufficient as a multipurpose lithium grease.

Then add the application conditions. For water-washout or rust risk, the calcium sulfonate complex data explicitly emphasizes water resistance and rust protection. For high-temperature automotive grease, all four families list automotive use in the provided data, so the working temperature and load separate them. For high-temperature gear grease, XG/HP and XG/HP-R mention bearing and gear protection in the product data. For high-temperature EP grease, compare the quantified PD values where listed: 315 kgf for XG/HP and 500 kgf for XG/C. For high-temperature bearing grease and high-temperature roller bearing grease, confirm the lubrication method as well: the application data lists compatibility with centralized lubrication systems, grease guns, gearbox spray equipment, and grease injection or replacement equipment.

If the specification calls for high-temperature moly grease, do not infer moly content from the thickener family names in this article. The provided model data covers lithium complex, calcium sulfonate complex, polyurea, and lithium greases. Solid-additive content and moly content should be confirmed separately against the exact product specification.

Step-by-step: from application data to an approved partnership

1. Define the duty in writing. Record the working temperature, load type, impact load, water exposure, and lubrication method. XINGANG's application data for iron and steel plant lubrication systems lists high temperature, heavy load, impact load, humid or water-splash environments, centralized lubrication systems, and manual greasing as relevant conditions.
2. Shortlist by working temperature and model. Use the model map to reduce the field to one or two families. Do not approve a model until the exact designation, such as XG/HP-R, XG/C5, or XG/U10, is written on the quotation.
3. Check certificate scope and model coverage. Confirm that the certificate number and product model in the approval file match the purchase order. The certificate scope should be read together with the model list, not as a general company claim.
4. Set the acceptance method before the first batch. If elevated-temperature bearing life data is required, specify ASTM D3336 as the test method. ASTM D3336 is used to evaluate the life of lubricating greases in ball bearings at elevated temperatures up to 400°F/204°C. DIN 51502 can also help buyers read maximum-temperature claims because it classifies high-temperature greases by letters: K and M at +120°C, N at +140°C, P at +160°C, R at +180°C, S at +200°C, T at +220°C, and U above +220°C. The product datasheet and agreed test report should remain the controlling documents.
5. Agree purchase terms and packaging. Confirm MOQ, lead time, OEM package and sticker requirements, batch test records, and shipping documents. XINGANG's stated terms include MOQ 2000 kgs and lead time 10 to 20 days.
6. Define long-term support. Put the technical contact, after-sales route, replacement terms, and application review into the agreement. The support discussion should cover XG/HP and XG/HP-R as well as the XG/C, XG/U, and XG/L series, because the same partnership questions apply across the range.

Purchase terms buyers should confirm

XINGANG's stated commercial terms include an MOQ of 2000 kgs, lead time of 10 to 20 days, OEM customization for package and sticker, monthly capacity of 3000 tons, and 100% test. The company exports to India, Pakistan, Vietnam, Malaysia, South Africa, Turkey, Peru, and other countries. Annual output is listed as 45000 tons. These are capacity and term facts, not a promise that every model or pack size is always in stock.

• MOQ: 2000 kgs.
• Lead time: 10 to 20 days.
• OEM: package and sticker customization are listed as available.
• Capacity: 3000 tons per month; 45000 tons annual output.
• Quality control: 100% test.
• Export markets: India, Pakistan, Vietnam, Malaysia, South Africa, Turkey, Peru, and other countries.

This article does not quote a price. A firm quotation should identify the exact model, pack size, destination, required documents, and any OEM labeling requirement. Price exposure should also be read against raw-material volatility: the STLE data on lithium price movements explains why buyers should confirm the quotation basis and validity period rather than treating a historical price as a permanent term.

Acceptance criteria: what to put in the approval file

Acceptance criteria should be written before the first shipment. At minimum, the file should contain the product name, exact model designation, certificate number and scope, working temperature, dropping point, PD value where listed, batch test record, packaging specification, and the application conditions the model was approved for. For XG/HP and XG/HP-R, the file should record -20~180℃, 300℃ dropping point, and 315 kgf PD value. For XG/C4 and XG/C5, it should record -20~250℃, 330℃ dropping point, and 500 kgf PD value. For the XG/U series, it should record -20~200℃ and 260℃ dropping point, with PD value confirmed separately if required. For XG/L1 and XG/L2, it should record -20~120℃ and ≥180℃ dropping point.

The certificate check should be specific. XINGANG's ISO 9001:2015 certificate number is 07625Q2422R65, issued by Beijing ZhongRunXing Certification Co., Ltd., with validity from 2025-10-16 to 2028-11-12. The ISO 14001:2015 certificate number is 07625E1532R6S, issued by the same authority with the same validity period. The ISO 45001:2018 certificate number is 7625S1361R6S, also issued by Beijing ZhongRunXing Certification Co., Ltd. with validity from 2025-10-16 to 2028-11-12. The IATF 16949:2016 certificate number is 2024A3002, issued by China Jiuding Automotive Supplier Certification Co., Ltd. (CASC), with validity from 2024-07-04 to 2027-07-03. The ISO 9001 scope covers design, production, and sales of lubricant grease. The IATF scope covers design and manufacturing of lubricating oil with no permitted exclusions.

Model coverage should be checked against the product being purchased. The ISO 45001 certification covers lithium grease models XG/L1 and XG/L2, polyurea grease models XG/U1, XG/U2, XG/U5, XG/U6, XG/U10, XG/U17, and XG/U18, calcium sulfonate complex grease models XG/C4 and XG/C5, and lithium complex grease models XG/HP and XG/HP-R. The IATF 16949 certification is also listed as covering lithium complex grease, calcium sulfonate complex grease, polyurea grease, and lithium grease. The buyer's approval file should still identify the exact model and certificate scope rather than relying on a general statement that the company is certified.

Long-term supply and after-sales support

XINGANG's stated after-sales support includes remote technical formula guidance, on-site usage technical consultation, quality problem compensation and replacement support, and product application solution matching. The company has 15 engineers, a 16000 m² factory, 60 employees, 45000 tons annual output, and 3000 tons monthly capacity. For a long-term program, these facts should be translated into agreement terms: which model is approved, what annual volume is expected, which packaging is used, how batch records are retained, who the technical contact is, and how a quality complaint is handled.

The same support questions apply to XG/HP and XG/HP-R as well as the other XG model series. A buyer using XG/HP in a high-temperature bearing application may need application matching and technical consultation, while a buyer using XG/C4 or XG/C5 in a wet heavy-load application may need help confirming water resistance and replenishment intervals. A polyurea user may need support on compatibility with centralized lubrication systems. A lithium grease user may need confirmation that the application remains within the 120℃ working range. The support discussion should be model-specific, not generic.

A documented case record for large steel plants, metallurgical enterprises, and industrial equipment manufacturers lists 40 units and a 30-year duration. The application covered bearings in continuous casting, rolling mills, kiln cars, gearboxes, conveyors, vibrating screens, and other high-temperature and heavy-load lubrication points. Reported results include reduced friction and wear, improved temperature resistance and water resistance, extended lubrication intervals, and enhanced equipment reliability. The case record also highlights a stable grease structure under long-term high temperature, compatibility with centralized lubrication systems, and reduced enterprise maintenance costs. These are case-record facts, not a guarantee of identical results in every plant.

Use cases: where each family fits

For iron and steel plant lubrication systems, XINGANG lists anti-wear, extreme pressure, high-temperature resistance, water resistance, and anti-rust protection as the required functions. The model choice then depends on the actual temperature and water exposure. XG/HP and XG/HP-R cover up to 180℃ with 315 kgf PD value. XG/U covers up to 200℃. XG/C4 and XG/C5 cover up to 250℃ with 500 kgf PD value and explicit water-resistance and rust-protection emphasis.

In mining and heavy machinery, XG/C4 and XG/C5 list mining and machinery among their applications, and the product data emphasizes heavy-load mechanical parts and water resistance. In automotive applications, the provided data lists automotive use across the four families, so the buyer should confirm whether the point is a bearing, chassis, gear, or other component and then match the working temperature. For high-temperature automotive grease, the 180℃, 200℃, 250℃, and 120℃ limits are the first separation points.

For centralized lubrication systems, grease guns, gearbox spray equipment, and grease injection or replacement equipment, the application data lists compatibility with these methods. That matters for high-temperature roller bearing grease and high-temperature bearing grease duties because the delivery method can affect how the grease behaves at the point of application. The buyer should confirm the method on the inquiry, not after the first batch arrives.

Comparison table: XINGANG high-temperature grease model data

Table data is taken from the provided XINGANG product specifications. Confirm the current datasheet, exact model designation, and certificate scope before placing a purchase order.

Frequently asked questions

Next step: confirm the model, then confirm the terms

For XG/HP and XG/HP-R, the XG/C series, the XG/U series, or the XG/L series, start with the exact application data and the current product datasheet. XINGANG can support the evaluation with model matching, certificate records, OEM package and sticker discussion, and after-sales technical support. Use the company profile link below for the broader company and manufacturing background.

Contact: Vera Wang, admin@hzxg.com, Tel +86 135-8871-1880, WhatsApp +86 13588711880. Website: www.china-lubes.com. Company profile: download the XINGANG company profile PDF.

Conclusion

The right high-temperature grease partnership is built on a model that matches the working temperature, a purchase term that matches the order, and an acceptance file that proves the batch. XINGANG's model data gives buyers clear separation points: XG/HP and XG/HP-R at -20~180℃, the XG/U polyurea series at -20~200℃, XG/C4 and XG/C5 at -20~250℃, and XG/L1 and XG/L2 at -20~120℃. The purchase terms and certificate records then determine whether the selected model can be supplied consistently. The final step is practical: confirm the exact model, request the current datasheet and quotation, and test the sample against the application before scaling the order.