Import Api Threading Oil Pipe Casing Tubing Coupling — Buy in wholesale FOB from Supplier in China
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Api Threading Oil Pipe Casing Tubing Coupling
Api Threading Oil Pipe Casing Tubing Coupling from Tianjin Dalipu connects two oil tubing or casing pipes in drilling and production operations. The couplings are manufactured to API 5CT standards and offered in carbon or alloy steel across API grades J55, K55, N80, L80, and P110, with thread configurations including EUE, NUE, STC, LTC, and BTC to ensure leak-proof tubular assembly. Specification range covers outer diameters from 2-3/8" to 20", with wall thicknesses between 4.24 mm and 16.13 mm.
Material grades align with API 5CT requirements, where P110 offers the highest yield strength for demanding downhole conditions. Color-coded thread compounds (red, green, white) indicate specific lubrication and sealing properties, with non-destructive testing (NDT) applied per API 5CT and 5B rules. Typical industry practice includes hydrostatic testing and dimensional inspections to verify thread integrity and pressure resistance.
These couplings are used in onshore and offshore oilfields to maintain wellbore stability and prevent fluid migration between formations. Buyers typically source by metric ton, with P110-grade couplings commanding premium rates due to their enhanced mechanical properties. Common applications include vertical, directional, and horizontal wells where reliable tubular connections are critical to operational safety and efficiency.
| Material | Carbon Steel / Alloy Steel |
| API Grades | J55, K55, N80, L80, P110 |
| Thread Types | EUE, NUE, STC, LTC, BTC |
| Outer Diameter Range | 2-3/8" to 20" |
| Wall Thickness | 4.24 mm to 16.13 mm |
| Standard | API 5CT and API 5B |
| Thread Compound Colors | Red, Green, White |
| Testing | Non-Destructive Testing (NDT) per API 5CT |
| Typical Hydrostatic Test Pressure | standard 60-70% of yield strength (varies by grade) |
| Typical Application | Oil and gas drilling, production casing and tubing strings |
Tianjin Dalipu Oil Country Tubular Goods Co., Ltd operates from Jinghai, Tianjin, China, specialising in API-standard oil country tubular goods. The company’s product line includes casing, tubing, and couplings designed for oil and gas exploration and production, with a focus on adherence to API 5CT specifications.
The supplier’s profile indicates a harbor trust tier, with no recorded response rate or average response hours. The address places the business in the Jinghai district of Tianjin, a region known for its manufacturing base. No additional claims about certifications, client history, or production capacity are provided in the available data.
API threading oil pipe casing and tubing couplings are critical connection components used in oil and gas drilling and production operations. Manufactured to API 5CT standards in grades J55, K55, N80, L80, and P110, these couplings feature EUE, NUE, and STC thread configurations to ensure leak-proof tubular assembly. Widely sourced from mills in China, India, and Russia, API couplings are priced by metric ton with grades like P110 commanding premium rates due to higher yield strength requirements. Color-coded thread compounds (red, green, white) indicate specific lubrication and sealing properties for diverse downhole conditions.
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Sourcing Api Threading Oil Pipe Casing Tubing Coupling from Tianjin Dalipu Oil Country Tubular Goods Co., Ltd - China Import Guide
Before ordering, verify the API grade and thread type compatibility with your existing tubulars. Confirm that the supplier can provide third-party inspection reports and mill test certificates for the chosen grade, as these are critical for compliance with oilfield standards.
Discuss logistics details such as lead time, which can vary based on diameter and grade availability. Clarify Incoterms (e.g., FOB Tianjin) and payment terms, as these impact total landed cost. Packaging should meet API 5CT requirements for protection against corrosion and damage during transit.
Inspect the couplings upon arrival for dimensional accuracy, thread integrity, and surface finish. Request copies of NDT reports and hydrostatic test results. Ensure documentation includes heat numbers, grade markings, and traceability to the original mill for quality assurance.
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30 suppliersBuy Api Threading Oil Pipe Ca in Bulk — Verified Supplier in China
When sourcing Api Threading Oil Pipe Casing Tubing Coupling for your business, securing the right balance of quality and cost is essential. Tianjin Dalipu Oil Country Tubular Goods Co., Ltd, a verified supplier based in China, offers this product with key specifications including J55, K55, N80, L80, P110 (API 5CT OCTG grades), EUE (External Upset End), NUE (Non-Upset End), STC (Short Thread Coupling), and 2-3/8" to 20" OD (common sizes 4-1/2", 5-1/2", 7", 9-5/8"). 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 actively traded under HS Code 7307.23, making it a staple in the Flanges sector with strong demand from importing countries worldwide.
Api Threading Oil Pipe Ca Specifications, Trade Terms & Pricing
Importing Api Threading Oil Pipe Ca requires careful attention to shipping logistics, customs compliance, and secure payment terms. Tianjin Dalipu Oil Country Tubular Goods Co., Ltd offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 7307.23 in their destination country. 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 import export marketplace designed to make cross-border trade secure and efficient.
About Tianjin Dalipu Oil Country Tubular Goods Co., Ltd — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Api Threading Oil Pipe Ca has been verified on our platform. 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 verified manufacturers and exporters across 200+ countries. Explore similar products in the Flanges category and connect with top-tier exporters on our comprehensive online B2B marketplace. Start your sourcing journey today.
Import Api Threading Oil Pipe Ca — Shipping, Logistics & Customs
Importing Api Threading Oil Pipe Ca 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 for HS Code 7307.23 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 Threading Oil Pipe Ca
What is the wholesale price of Api Threading Oil Pipe Casing Tubing Coupling?
The current listed wholesale price for Api Threading Oil Pipe Casing Tubing Coupling from Tianjin Dalipu Oil Country Tubular Goods 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 Tianjin Dalipu Oil Country Tubular Goods Co., Ltd through EximNext.
What is the Minimum Order Quantity (MOQ) for Api Threading Oil Pipe Ca?
The supplier, Tianjin Dalipu Oil Country Tubular Goods Co., Ltd, has set a Minimum Order Quantity (MOQ) of 1 Bags for Api Threading Oil Pipe Ca. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Api Threading Oil Pipe Casing Tubing Coupling?
For international shipping and customs clearance, Api Threading Oil Pipe Casing Tubing Coupling is classified under HS Code 7307.23. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Api Threading Oil Pipe Ca from China?
To import Api Threading Oil Pipe Ca from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Tianjin Dalipu Oil Country Tubular Goods Co., Ltd. Ensure you have the necessary import licenses for Flanges products in your destination country.
Is Tianjin Dalipu Oil Country Tubular Goods Co., Ltd a verified supplier?
Yes, Tianjin Dalipu Oil Country Tubular Goods Co., Ltd is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Api Threading Oil Pipe Casing Tubing Coupling?
The key specifications for Api Threading Oil Pipe Casing Tubing Coupling supplied by Tianjin Dalipu Oil Country Tubular Goods Co., Ltd include J55, K55, N80, L80, P110 (API 5CT OCTG grades), EUE (External Upset End), NUE (Non-Upset End), STC (Short Thread Coupling), and 2-3/8" to 20" OD (common sizes 4-1/2", 5-1/2", 7", 9-5/8"). For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Api Threading Oil Pipe Ca?
Tianjin Dalipu Oil Country Tubular Goods Co., Ltd offers Api Threading Oil Pipe Ca with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Api Threading Oil Pipe Ca the most?
Api Threading Oil Pipe Ca is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Tianjin Dalipu Oil Country Tubular Goods Co., Ltd through our platform.
What certifications does this Api Threading Oil Pipe Ca supplier hold?
Tianjin Dalipu Oil Country Tubular Goods Co., Ltd maintains international quality certifications. These ensure that the Api Threading Oil Pipe Ca meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Api Threading Oil Pipe Casing Tubing Coupling on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Tianjin Dalipu Oil Country Tubular Goods 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 Tianjin Dalipu Oil Country Tubular Goods Co., Ltd.
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