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Drill collar
The drill collar offered by Dongying Haixin Petroleum Equipment Co., Ltd is a down‑hole weight‑on‑bit component manufactured from AISI 4145H modified steel. Its construction delivers the high axial load required for efficient drilling in demanding formations. The collar is engineered to precise dimensions, allowing seamless integration with standard top‑drive systems. Corrosion‑resistant treatment further extends service life in harsh downhole environments.
AISI 4145H provides a tensile strength typically above 620 MPa and hardness around 30 HRC, which aligns with industry standards for heavy‑weight drill collars. While Dongying Haixin supplies custom lengths and diameters, the typical outer diameter range for such collars is 4 in to 6 in, and lengths from 0.5 m to 2 m are standard in the sector. The use of industrial‑grade alloy and corrosion‑resistant coating matches the common specification for oil‑field drilling equipment.
These collars are commonly employed in oil and gas, mining and construction projects where reliable downhole weight is critical. Importers such as drilling contractors and equipment distributors source them for new well‑bore programmes and rig upgrades. Dongying Haixin offers flexible MOQ options and ships on FOB or CIF terms, with packaging designed for secure transport. Potential buyers should verify the ISO and API certification documents and confirm the exact dimensions required for their rigs.
| Material | AISI 4145H modified steel |
| Corrosion resistance | Enhanced coating (real) |
| Diameter range | Custom (buyer‑specified) - typical 102‑152 mm (4‑6 in) |
| Length options | Custom lengths - typical 0.5‑2 m |
| Tensile strength | ≥620 MPa (typical for AISI 4145H) |
| Hardness | ~30 HRC (typical) |
| Certifications | ISO and API (as listed) |
| Packaging | Sturdy wooden crate with protective padding (typical for heavy drill collars) |
| Standard API class | API 7‑1 (standard) |
| Weight per metre | Approx. 120 kg/m (typical) |
Dongying Haixin Petroleum Equipment Co., Ltd is located in Nan Er Road, Shengli Industrial Park, Dongying, Shandong Province, China (postal code 257000). The company is listed as an imported supplier and carries a harbor trust tier within the platform’s verification system. Its response metrics show a 0 % response rate and no recorded average response time, indicating that prospective buyers should initiate contact early to gauge communication speed. The firm specialises in petroleum equipment, focusing on downhole tools such as drill collars.
Dongying Haixin’s catalogue highlights the ability to produce customised lengths and diameters, aligning with client specifications for diverse drilling projects. While the listing does not disclose production capacity or exact lead times, the supplier states that flexible MOQ options are available. Buyers are advised to request detailed technical data sheets and certification copies to confirm compliance with ISO and API standards.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | Contact Supplier |
| Response Rate | New Supplier |
Sourcing Drill Collar from Dongying Haixin Petroleum Equipment Co., Ltd - China Import Guide
Before placing an order, verify the material grade, diameter, length and the ISO/API certificates supplied by Dongying Haixin. Request a detailed drawing that shows the exact dimensions you require and confirm that the custom size falls within the supplier’s manufacturing capabilities. This step helps avoid mismatches that could delay rig‑down operations.
Shipping is usually arranged on FOB or CIF terms, so discuss the preferred incoterm with the supplier early in the negotiation. Clarify the expected lead‑time, container loading plan and any freight forwarder requirements. Payment terms typically follow standard industry practice, but obtain written confirmation before finalising the contract.
Conduct a pre‑shipment inspection or arrange a third‑party audit to ensure the collar meets the agreed specifications. Ask for a mill test report and a coating thickness certificate to document quality. Keep copies of all certification and inspection documents for customs clearance and future quality audits.
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30 suppliersBuy & Import Drill Collar — Wholesale Supply from China
Securing a reliable supply chain for Drill Collar is critical for maintaining your business operations. Dongying Haixin Petroleum Equipment Co., Ltd, a supplier located in China, provides high-quality Drill Collar ready for international export. By connecting directly with this supplier, buyers can bypass intermediaries, negotiate custom wholesale pricing, and arrange bulk shipments. This product is a key offering within the Products industry, catering to distributors, wholesalers, and importers worldwide.
Request Wholesale Pricing & Bulk Trade Terms
Navigating the complexities of global sourcing is easier when you have direct access to the right manufacturers and exporters. When importing Drill Collar from China, buyers can discuss shipping logistics, packaging requirements, and preferred payment terms directly with Dongying Haixin Petroleum Equipment Co., Ltd. This seamless communication is powered by EximNext, a premier B2B marketplace that connects ambitious buyers with global sellers across every major industry.
About Dongying Haixin Petroleum Equipment Co., Ltd — Supplier in China
We understand that verifying supplier credentials is a top priority for importers. Dongying Haixin Petroleum Equipment Co., Ltd is part of our extensive network of vetted international exporters. Browse more products in the Related category or discover new suppliers across the Products sector. Expand your sourcing capabilities through our trusted global B2B marketplace — the import export marketplace built for serious international trade.
International Shipping & Import Guidelines for Drill Collar
When importing Drill Collar from China, buyers should consider shipping terms (FOB, CIF, EXW), customs documentation requirements, and payment security. Contact the supplier to discuss the best logistics options for your destination country.
Frequently Asked Questions About Drill Collar
How can I get the wholesale price for Drill Collar?
Click the "Request Quotation" button to contact Dongying Haixin Petroleum Equipment Co., Ltd directly. The supplier will provide a custom quote based on your required bulk quantity and shipping destination.
Can I buy Drill Collar in bulk from China?
Yes, Dongying Haixin Petroleum Equipment Co., Ltd provides Drill Collar for bulk export from China. You can negotiate the MOQ, packaging details, and shipping terms directly with the supplier.
What shipping terms are available for this product?
Shipping terms such as FOB, CIF, or EXW can be negotiated directly with Dongying Haixin Petroleum Equipment Co., Ltd. Contact the supplier to discuss the best logistics options for importing Drill Collar to your country.
How do I request a sample of Drill Collar?
Send a direct message to Dongying Haixin Petroleum Equipment Co., Ltd through our platform to request a product sample before committing to a large wholesale order.
Is it safe to source products from this supplier?
Dongying Haixin Petroleum Equipment Co., Ltd is a registered supplier on EximNext. Check the company profile and documents before ordering, and use our secure messaging system and standard international payment methods (L/C, T/T, Escrow).
What specifications should I ask for when importing Drill Collar?
Request a detailed product data sheet including grade, purity, dimensions, material composition, and applicable industry standards from Dongying Haixin Petroleum Equipment Co., Ltd.
Does Dongying Haixin Petroleum Equipment Co., Ltd offer custom packaging or private labeling?
Many suppliers on EximNext, including Dongying Haixin Petroleum Equipment Co., Ltd, offer custom packaging and private label options for bulk wholesale orders.
What payment methods are accepted for international orders?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services.
Can I find more Products suppliers on EximNext?
Yes, EximNext hosts a wide network of Related manufacturers, exporters, and wholesalers across 200+ countries.
How do I contact Dongying Haixin Petroleum Equipment Co., Ltd for a bulk trade inquiry?
Click "Request Quotation" or "Contact Supplier" on this page. Include your required quantity, destination country, and preferred shipping terms. All communications are managed securely through our B2B marketplace.
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