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Api Well Drilling Crossover Sub For Oilfield
The Api Well Drilling Crossover Sub is a machined steel connector used to join drill stem components with dissimilar thread forms or outer diameters in oilfield rotary operations. Lake Petroleum Technology Co., Ltd supplies multiple configurations including straight subs, reduced-section subs, saver subs, bit subs, lift subs, and top drive subs. Bit subs are offered in outer diameters from 3 1/8 inch to 11 inch with lengths ranging from 36 inch to 48 inch, though exact stock availability must be confirmed directly with the supplier.
Manufactured from alloy steel bar stock and heat-treated to API specifications for drill stem components, crossover subs endure cyclic tension, torsion, and bending loads. The reduced-section sub incorporates a controlled cross-sectional transition to match different connection sizes, while the saver sub protects the kelly thread from wear during repeated make-up and break-out. Top drive subs function as sacrificial elements, absorbing connection wear between the top drive system and the drill string to reduce repair costs on the main drive unit.
These subs are essential to drilling contractors, rig operators, and directional drilling service companies managing complex bottom-hole assemblies. Selection depends on the exact pin-by-box or box-by-box connection specification, material grade, and hardbanding requirements. Buyers should request material certificates and inspection reports from Lake Petroleum Technology Co., Ltd, as the source description does not confirm API monogram licence or specific material grade compliance.
| Product Category | Crossover sub (straight, reduced-section, saver, bit, lift, top drive) |
| Bit Sub OD Range | 3 1/8 inch to 11 inch (79.4 mm to 279.4 mm) |
| Bit Sub Length Range | 36 inch to 48 inch (914 mm to 1,219 mm) |
| Connection Function | Crossover between dissimilar thread forms or OD drill stem members |
| Typical Material Grade | AISI 4145H or equivalent alloy steel bar, typical for API drill subs |
| Typical Hardness Range | 285-341 BHN after heat treatment, standard for drill stem subs per API 7-1 |
| Top Drive Sub Purpose | Sacrificial element between top drive and drill string |
| Saver Sub Function | Extends kelly life by assuming connection wear |
| Lift Sub Application | Enables safe handling of straight OD tubular with drill pipe elevators |
| Typical Standard Reference | API 7-1 specification for rotary drill stem elements (typical industry standard) |
Lake Petroleum Technology Co., Ltd is based in Dongying, China, postal code 257200, within the Shengli Oilfield industrial corridor. The supplier holds a harbor trust tier classification. No response history is recorded, with a 0.00 percent response rate and zero average response hours. The company profile does not disclose factory size, number of employees, years in operation, annual revenue, or specific quality management system certifications.
The listing presents a range of crossover sub types for drilling operations, indicating capability in machining, heat treatment, and threading of heavy-wall tubular connectors. Buyers should not assume API monogram licence or specific metallurgical certification without direct verification. The address format in the source data contains anomalies, so confirming the registered business name, tax identification, and facility location through direct due diligence is advisable before committing to purchase.
| 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 Api Well Drilling Crossover Sub For Oilfield from Lake Petroleum Technology Co., Ltd - China Import Guide
Before placing an order with Lake Petroleum Technology Co., Ltd, verify the supplier's business registration, factory location, and whether they hold an API monogram licence for drill stem subs. Request sample material test reports and a quality plan showing inspection points. Confirm that the thread specifications for your required subs match your existing drill string inventory, as mismatched connections cause operational delays and safety hazards.
Shipping from Dongying typically routes through Qingdao or Tianjin seaport. Negotiate Incoterms carefully, FOB Chinese port being common for tooling orders, but clarify export licencing and customs documentation. Given the zero response rate, establish direct contact through multiple channels before payment. Use secure payment instruments for the first transaction, and obtain a production schedule with milestone confirmation. Ask for pre-shipment inspection rights and photographic or video evidence of finished goods.
Upon receipt, inspect each sub for surface finish, thread condition, and conformance to the ordered dimensions. Use API ring and plug gauges to verify thread form, and check for proper stamping or marking of heat number, serial number, and API licence number where applicable. Store subs horizontally on racks with thread protectors in place, and rotate stock to prevent long-term corrosion. Maintain traceability records linking each sub to its material certificate and inspection report for future recertification or failure analysis.
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30 suppliersBuy Api Well Drilling Crossov in Bulk — Supplier in China
When sourcing Api Well Drilling Crossover Sub For Oilfield for your business, securing the right balance of quality and cost is essential. Lake Petroleum Technology Co., Ltd, a supplier based in China, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $10/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the Drilling Machines & Tools sector with strong demand from importing countries worldwide.
Api Well Drilling Crossov Specifications, Trade Terms & Pricing
Importing Api Well Drilling Crossov requires careful attention to shipping logistics, customs compliance, and secure payment terms. Lake Petroleum Technology Co., Ltd offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading global B2B marketplace designed to make cross-border trade secure and efficient.
About Lake Petroleum Technology Co., Ltd — Supplier in China
Finding trustworthy partners is the foundation of successful importing. Ask the supplier of this Api Well Drilling Crossov for business registration and quality documents before ordering. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of manufacturers and exporters across 200+ countries. Explore similar products in the Drilling Machines & Tools category and connect with top-tier exporters on our comprehensive import export marketplace. Start your sourcing journey today.
Import Api Well Drilling Crossov — Shipping, Logistics & Customs
Importing Api Well Drilling Crossov requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Api Well Drilling Crossov
What is the wholesale price of Api Well Drilling Crossover Sub For Oilfield?
The current listed wholesale price for Api Well Drilling Crossover Sub For Oilfield from Lake Petroleum Technology Co., Ltd is $10/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Lake Petroleum Technology Co., Ltd through EximNext.
What is the Minimum Order Quantity (MOQ) for Api Well Drilling Crossov?
The supplier, Lake Petroleum Technology Co., Ltd, has set a Minimum Order Quantity (MOQ) of 1 Bags for Api Well Drilling Crossov. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Api Well Drilling Crossover Sub For Oilfield?
The HS Code classification for Api Well Drilling Crossover Sub For Oilfield depends on the specific grade and form. Contact Lake Petroleum Technology Co., Ltd through EximNext for the exact HS Code and customs documentation required for your destination country.
How can I import Api Well Drilling Crossov from China?
To import Api Well Drilling Crossov from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Lake Petroleum Technology Co., Ltd. Ensure you have the necessary import licenses for Drilling Machines & Tools products in your destination country.
How can I check Lake Petroleum Technology Co., Ltd before ordering?
Open the Lake Petroleum Technology Co., Ltd company profile on EximNext to see the details the company has provided. Before a bulk order, ask for business registration, certificates and export documents, and consider a sample or a small trial order.
What are the key specifications of Api Well Drilling Crossover Sub For Oilfield?
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Lake Petroleum Technology Co., Ltd through EximNext.
What packaging options are available for bulk orders of Api Well Drilling Crossov?
Lake Petroleum Technology Co., Ltd offers Api Well Drilling Crossov with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Api Well Drilling Crossov the most?
Api Well Drilling Crossov is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Lake Petroleum Technology Co., Ltd through our platform.
What certifications does this Api Well Drilling Crossov supplier hold?
Lake Petroleum Technology Co., Ltd maintains international quality certifications. These ensure that the Api Well Drilling Crossov meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Api Well Drilling Crossover Sub For Oilfield on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Lake Petroleum Technology Co., Ltd will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Lake Petroleum Technology Co., Ltd.
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