FAQ

GOLDDRILL is the export brand of Shandong GOLDDRILL Metal Products Co., Ltd., a China-based manufacturer established in 2008 and headquartered in Weifang, Shandong — the world-famous "City of Kites." We specialize in mining pipeline systems, wear-resistant pipes, pressure pipe fittings and valves for underground coal mines, metal mines, backfill systems, and municipal / chemical fluid networks.

Our full product matrix covers: HDPE mining pressure pipe (PE100), wear-resistant steel pipe and bimetallic composite pipe, anti-corrosion steel pipe (FBE / 3PE / epoxy / galvanized), grooved quick-connect couplings, backfill-pipeline special couplings, pipe clamps and supports, pressure pipe fittings (elbows, tees, reducers, flanges), industrial valves (gate, globe, ball, check, butterfly, slurry, telescopic, pigging, safety, etc.), and two integrated systems — the Remote Centralized Emulsion Supply System and the Mining Backfill System. Sizes span DN25 to DN300 (1"-12").

GOLDDRILL operates a vertically integrated manufacturing base combining ductile-iron foundry, steel-pipe production lines, HDPE extrusion, machining, assembly, surface-treatment, and a 5G-enabled smart factory recognized by the Chinese Ministry of Industry and Information Technology. Detailed floor area and headcount are available on request under NDA.

Domestically we have long-term supply relationships with China Energy Investment Corporation, Shandong Energy, China Coal Group, Sinopec, Huaneng, Datang, Shanxi Coking Coal and other leading energy groups. Overseas we serve mining, chemical and EPC customers in Mongolia, Russia, Kazakhstan, Uzbekistan, Iran, Southeast Asia (Indonesia, Vietnam, the Philippines) and Africa (South Africa, Zimbabwe).

Our factory is located in Weifang, Shandong Province, China — approximately 1 hour by high-speed rail from Qingdao and 2.5 hours by car from Jinan Yaoqiang International Airport. Overseas buyers are warmly welcomed; we recommend booking 5–7 working days in advance so we can arrange hosting, samples, line tours and meeting facilities. Please email [email protected] to schedule.

Annual capacity by major line: HDPE pipe 15,000 t/yr, wear-resistant and anti-corrosion steel pipe 30,000 t/yr, ductile-iron grooved fittings & couplings 5,000 t/yr, pressure fittings & flanges 8,000 t/yr, industrial valves 200,000 pcs/yr. Capacity can be flexibly expanded to support project peaks.

Quality is managed under ISO 9001:2015 with a documented QMS covering incoming inspection, in-process control, final inspection, and traceability. Each batch ships with a quality certificate including chemical composition, mechanical properties and dimensional records. Third-party inspections by SGS, BV, TÜV or CCIC can be arranged on request.

Yes. Our R&D team works in collaboration with Shandong University, China University of Mining and Technology, and Weifang University, and runs joint laboratories for energy equipment and intelligent systems. We currently hold 8+ invention patents, 30+ utility-model patents, and 4 software copyrights, and are recognized as a provincial-level 'little giant' specialty & sophisticated enterprise.

Yes. Our OEM service covers: production to customer drawings, specs, samples or technical requirements; custom dimensions and materials; private-label branding; customized packaging; prototype and sample runs; full QC documentation; and batch production with reliable lead times. Minimum batch quantities depend on the product family — typically 100–500 pcs for fittings, 1–5 t for pipes.

Yes. Our ODM workflow covers requirement analysis, structural and mechanical design, material selection, prototype development, performance testing and validation, and production optimization. Under NDA we can also develop products to a customer's concept from scratch. Typical sample lead time is 30–60 days.

Diameter, wall thickness, length (up to 12 m standard, longer on request), material grade (Q235, Q345, 20#, stainless steel 304/316, HDPE PE80/PE100, QT450-10, etc.), surface coating (epoxy, FBE, 3PE, hot-dip galvanizing), colour (red, blue, yellow, green), logo and flow-direction marking, gasket/elastomer compound, pressure class (PN6–PN64), and end connection (grooved, flanged, threaded, butt-weld, fusion).

Yes — please share the medium parameters (composition, concentration, temperature), pressure, flow, line layout, elevation profile and any special environmental constraints. Our engineering team will issue a free feasibility and selection proposal, typically within 5–10 working days.

Yes. We routinely sign bilingual NDAs (CN/EN) before exchanging drawings, samples or specifications with new customers. Standard NDA templates can be provided within 24 hours.

Yes. Packaging can be customized to local language, regulatory label (EAC, GOST, KCS, etc.), barcode/QR, retail-ready kit, pallet configuration, container loading plan, and brand artwork. Lead-time impact is usually 5–7 days.

Please send an email to [email protected] (or use the contact form on this site) with: (1) product type and detailed specs, (2) quantity, (3) application / medium conditions, (4) destination country and preferred Incoterm, (5) required delivery date. We typically reply with a formal quotation within 24–48 hours.

Standard quotations are valid for 30 calendar days unless otherwise stated. For projects with very long procurement cycles we can lock prices for 60–90 days against a confirmed purchase schedule.

Standard catalogue items have no MOQ — single pipes or single fittings can be shipped for trial orders. Customized items usually require MOQ of 5–10 pieces (fittings) or 1–5 tonnes (pipes), depending on tooling and material setup costs.

Standard catalogue items: 7–15 days. Bulk orders ≥ 10 t: 20–30 days. Customized items: 30–45 days. MA/KA-certified mining products: 3 days from stock for common sizes; 15–25 days for replenishment. For very large project orders lead times are confirmed in the contract.

Yes. For emergency or shutdown-recovery situations we can expedite production within 5–10 days for many catalogue items. Expedite fees and air-freight options are quoted case by case.

Yes — free samples of standard catalogue items can be dispatched (freight collect) within 3–5 days. For customized samples we charge the unit cost plus freight; sample fees are fully refundable against a confirmed bulk order above a mutually agreed threshold.

Simple modifications (logo, colour, marking): 7–15 days. New design (new mould, new tooling, new material): 30–60 days, including drawing confirmation, tooling, trial sample, performance test and customer approval.

Yes. We routinely sign prototype agreements covering IP ownership, confidentiality, tooling ownership, sample fees and offset terms against bulk orders.

Standard packaging: HDPE pipe — woven bags on fumigated wooden pallets with stretch wrap; steel pipe and fittings — rust-preventive oil, woven cloth, steel strapping, fumigated wooden crates; valves — bubble wrap + foam + cartons + crates. Packaging can be fully customized.

Yes — laser engraving, ink-jet printing, sticker labels, packaging artwork and flow-direction arrows are all available. Brand artwork files (AI / CDR / PDF) are preferred.

EXW, FOB (Tianjin / Qingdao / Shanghai / Ningbo), CIF, CFR, DAP, DDP. We can also arrange door-to-door delivery to project sites in Central Asia and Russia via our logistics partners.

Yes — commercial invoice, packing list, certificate of origin (CO), Form A / Form E / Form F, fumigation certificate, insurance policy, bill of lading, and any third-party inspection certificates required by your customs.

Mongolia: 7–15 days by land via Tianjin / Erenhot. Russia: 15–25 days by land via Manzhouli / Alashankou, or 35–45 days by sea to St. Petersburg. Kazakhstan: 10–20 days by land via Alashankou / Khorgos. Uzbekistan: 12–18 days by land. Iran: 25–35 days by sea. Southeast Asia and Africa: 25–45 days by sea depending on port. We will quote an exact schedule against your destination.

Currencies: USD, EUR, RMB, and RUB (subject to banking availability). Methods: T/T (wire transfer), L/C (irrevocable, at sight or with deferred payment), D/P, D/A for established customers. Credit-card payment is not supported for export orders.

New customers: 30% T/T deposit, 70% balance against copy of B/L. L/C at sight is also accepted. For established customers with good payment history we can offer more flexible terms such as 30/70, 20/80 or open-account (OA) after a trial period.

Quotations are typically EXW / FOB without tax. We can provide CIF, DAP or DDP prices on request. For Chinese domestic customers VAT invoices (13%) are available.

Yes — project-based, volume-based, and annual framework-discount schemes are available. We are happy to discuss tiered pricing for multi-batch or multi-year supply agreements.

ISO 9001 (quality), ISO 14001 (environment), ISO 45001 (occupational health & safety), China MA (coal-mine product safety approval), KA (underground-use safety approval). Selected products can be supplied with CE, EAC (Russia / Kazakhstan), GOST-R, and other regional approvals on request.

Standard documents: commercial invoice, packing list, bill of lading / waybill, certificate of origin, product quality certificate (chemical composition, mechanical properties, dimensions), MA / KA certificate (where applicable), heat-treatment report, hydrostatic test report, and warranty letter. Third-party inspection reports (SGS / BV / TÜV / CCIC) can be arranged.

HDPE pipe: ISO 4427, EN 12201, GB/T 13663. Wear-resistant steel pipe: YB/T 4569, ASTM A532 (wear layer), GB/T 31940 (bimetallic composite). Grooved couplings: GB/T 17241.6, AWWA C606, ISO 2531. Backfill couplings: company standard + customer technical agreement. Anti-corrosion: SY/T 0315 (3PE), SY/T 0407 (FBE), GB/T 8923 (surface preparation). Industrial valves: API 600 / 6D / 609, ASME B16.34, AWWA C504 / C509 / C515 / C606, EN 593 / 1171 / 1984, GB/T 12234 / 12238. Specific compliance lists are available per product family.

Yes — we can issue Certificates of Origin (general), and where applicable preferential Form E (China–ASEAN), Form F (China–Chile), Form A (GSP), and other free-trade-agreement certificates to help reduce or eliminate import duties.

Standard warranty is 18 months from the date of dispatch or 12 months from the date of installation / commissioning, whichever comes first. Extended warranty (up to 36 months) can be agreed for project orders. Warranty covers manufacturing defects only — not wear from abrasive media, misuse, or unauthorized modification.

Customers provide photos, batch numbers and a description of the issue. Our after-sales team acknowledges within 2 working hours during office time and provides a root-cause analysis within 3 working days. Repair, replacement or credit is arranged on a case-by-case basis consistent with the warranty terms.

Yes. For large or key projects we can dispatch an experienced engineer to guide installation, pressure testing, commissioning and operator training. For standard orders we supply detailed installation manuals and video tutorials in English / Russian / Mongolian / Kazakh.

Yes — GOLDDRILL products are covered by product-liability insurance. Coverage amounts can be tailored for large project orders on request.

We recommend that customers keep a 5–10% spare stock of wear parts (gaskets, wear-resistant liners, sealing rings) on site. We can pre-pack a project-specific spare-parts kit and ship it together with the main order to reduce later logistics costs.

We operate a cooperative warehouse in Ulaanbaatar, Mongolia, enabling fast delivery of small-batch stock items. Localized service teams are being built in Russia and Kazakhstan. For other markets we work with appointed agents — please contact us for the agent in your region.

We welcome long-term partnership with established trading companies and EPC contractors in our target markets. We offer exclusive-area protection, marketing co-investment, technical training, and project leads. Please send your company profile and market coverage to [email protected] — our international sales team will follow up.

Please book 5–7 working days in advance. We will arrange airport pickup (Qingdao or Jinan), factory tour, sample display, technical meeting, hotel reservation and translation support as needed.

Yes — we provide full technical back-office support to our agents and end customers, including installation videos, troubleshooting guides, replacement-parts supply and, where needed, on-site engineer dispatch.

Chinese (main), English, Russian, Mongolian and Kazakh are supported in our sales and engineering communications. Marketing materials are available in CN / EN / RU / MN.

We are committed to helping mining customers reduce whole-life carbon emissions through: (1) promoting HDPE pipe as a long-life, corrosion-free alternative to steel in low-abrasion duty; (2) low-leakage quick-connect coupling systems that reduce pumping energy and water waste; (3) ISO 14001 environmental management across our factories; (4) ISO 45001 occupational health & safety management. We publish key ESG indicators in our annual supplier profile.

We screen all transactions against applicable sanctions and dual-use lists and refuse business that violates international or Chinese export-control rules. We also support customers' compliance needs — for example, providing conflict-mineral declarations, REACH / RoHS statements, and origin verification.

All customer drawings, brand artwork, and confidential information are handled under signed NDAs and stored on access-controlled systems. We never reuse customer-owned designs without explicit written permission.

We use confirmed L/C or insured T/T for new customers, gradually extending credit as the relationship matures. For EPC projects we can join tripartite agreements with the end-user and the EPC contractor to align delivery, payment and warranty.

Our after-sales team responds within 2 hours during working time and within 24 hours for emergencies. For confirmed manufacturing defects we will dispatch replacement parts from stock or air-freight a new batch at our cost, depending on the agreed warranty terms.