Import 4145h 3 1/2" 6 3/8" Heave Weight Drill Pipe — Buy in wholesale FOB from Supplier in China
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4145H 3 1/2" 6 3/8" Heave Weight Drill Pipe
This heavy weight drill pipe (HWDP) is an intermediate-weight drill stem component manufactured from premium 4145H chromoly alloy steel, supplied by Dongying Lake Petroleum Technology Company in China. Designed for use between drill collars and standard drill pipe, it offers enhanced stiffness to reduce buckling in vertical and directional drilling applications. The 3 1/2 inch nominal size features a 6 3/8 inch OD tool joint connection, with heavy wall construction for durability in high-stress environments.
The pipe is produced from one-piece AISI 4145H modified steel, quenched and tempered for toughness in demanding oil and gas drilling operations. Standard design includes a center upset or wear pad to extend tube life, reduce hole drag, and minimize differential sticking. Connections are phosphate coated to prevent galling, with cold-rolled thread roots on API and H-90 connections. Pressed steel thread protectors are supplied as standard, while internal coating and hardfacing are available on request.
HWDP from this Shandong-based supplier is widely used in international oilfield services, particularly where additional weight on bit is required without the bulk of drill collars. Buyers typically source this as API oil country tubular goods (OCTG) for deepwell and directional drilling projects. The product is traded globally under standard API specifications, with spiral and non-magnetic variants available for specialized applications.
| Material Grade | Alloy Steel 4145H (Chromoly) |
| Nominal Size | 3 1/2 inch |
| Tool Joint Connection OD | 6 3/8 inch |
| Type | Heavy Weight Drill Pipe (HWDP) |
| Design Standard | API Oil Country Tubular Goods (OCTG) |
| Manufacturing Process | One-piece AISI 4145H modified, quenched and tempered |
| Connection Protection | Phosphate coated |
| Thread Root Treatment | Cold rolled (API and H-90 connections) |
| Thread Protectors | Pressed steel (standard connections) |
| Typical Length Range | 9 to 13.5 m (standard for HWDP) |
| Typical Wall Thickness | 1.0 to 1.5 inch (heavy wall construction) |
Dongying Lake Petroleum Technology Company is based in Dongying, Shandong Province, China, with its address listed along Huanghe Road in the 257000 postal district. The company specializes in oilfield equipment, including heavy weight drill pipe and other API tubular goods. Its product lineup targets international buyers in the oil and gas exploration sector, with a focus on durable components for high-stress drilling environments.
The supplier’s profile indicates a harbor trust tier, though current response metrics are unavailable. The company positions itself as a manufacturer of premium alloy steel drill stem components, with capabilities to provide custom specifications such as spiral or non-magnetic designs. No additional verification details, client references, or historical data are provided in the available listing.
Heavy weight drill pipe (HWDP) is an intermediate-weight drill stem component manufactured from premium 4145H chromoly steel, designed for use in conjunction with standard drill pipe in oil and gas drilling operations. Available in 3-1/2 inch nominal size with a 6-3/8 inch OD tool joint connection, this HWDP features heavy wall construction for enhanced durability in high-stress drilling environments. Widely sourced from global oil equipment manufacturers and traded internationally as API oil country tubular goods (OCTG).
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Sourcing 4145H 3 1/2" 6 3/8" Heavy Weight Drill Pipe from Dongying Lake Petroleum Technology Company - China Import Guide
Before ordering this heavy weight drill pipe from Dongying Lake Petroleum Technology Company, verify the exact API specification compliance (e.g., API Spec 7-1 for HWDP) and confirm whether the pipe meets your project’s mechanical property requirements, such as yield strength and hardness. Request third-party inspection certificates, including mill test reports (MTRs) for the 4145H material, to ensure traceability and adherence to industry standards.
Clarify logistics details, including packaging (e.g., bundled with threaded protectors), lead time for manufacturing, and the Incoterms offered (e.g., FOB Qingdao or CIF to your port). Confirm whether the supplier can provide additional services such as hardfacing, internal coating, or custom thread compounds, as these may affect delivery schedules and costs. Payment terms, such as TT or LC, should also be negotiated upfront.
For quality assurance, insist on dimensional inspections (OD, ID, wall thickness) and non-destructive testing (NDT) such as magnetic particle inspection (MPI) or ultrasonic testing (UT) for cracks. Check that thread compounds and protectors meet API standards to prevent galling and corrosion during transit. Request documentation such as API monograms, heat treatment records, and pressure test certificates to validate the pipe’s suitability for your drilling conditions.
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30 suppliersBuy 4145h 3 1/2" 6 3/8" Heav in Bulk — Verified Supplier in China
When sourcing 4145h 3 1/2" 6 3/8" Heave Weight Drill Pipe for your business, securing the right balance of quality and cost is essential. Dongying Lake Petroleum Technology Company, a verified supplier based in China, offers this product with key specifications including 4145H Heavy Weight Drill Pipe (HWDP), API 5D / API 7-1; 4145H Chromoly Steel Alloy, and 3-1/2 Inch (88.9mm) Nominal Pipe Body OD. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $500/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7304.23, making it a staple in the Flanges sector with strong demand from importing countries worldwide.
4145h 3 1/2" 6 3/8" Heav Specifications, Trade Terms & Pricing
Importing 4145h 3 1/2" 6 3/8" Heav requires careful attention to shipping logistics, customs compliance, and secure payment terms. Dongying Lake Petroleum Technology Company 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 7304.23 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 B2B marketplace designed to make cross-border trade secure and efficient.
About Dongying Lake Petroleum Technology Company — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this 4145h 3 1/2" 6 3/8" Heav 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 global B2B marketplace. Start your sourcing journey today.
Import 4145h 3 1/2" 6 3/8" Heav — Shipping, Logistics & Customs
Importing 4145h 3 1/2" 6 3/8" Heav 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 7304.23 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 4145h 3 1/2" 6 3/8" Heav
What is the wholesale price of 4145h 3 1/2" 6 3/8" Heave Weight Drill Pipe?
The current listed wholesale price for 4145h 3 1/2" 6 3/8" Heave Weight Drill Pipe from Dongying Lake Petroleum Technology Company is $500/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 Dongying Lake Petroleum Technology Company through EximNext.
What is the Minimum Order Quantity (MOQ) for 4145h 3 1/2" 6 3/8" Heav?
The supplier, Dongying Lake Petroleum Technology Company, has set a Minimum Order Quantity (MOQ) of 1 Bags for 4145h 3 1/2" 6 3/8" Heav. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for 4145h 3 1/2" 6 3/8" Heave Weight Drill Pipe?
For international shipping and customs clearance, 4145h 3 1/2" 6 3/8" Heave Weight Drill Pipe is classified under HS Code 7304.23. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import 4145h 3 1/2" 6 3/8" Heav from China?
To import 4145h 3 1/2" 6 3/8" Heav from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Dongying Lake Petroleum Technology Company. Ensure you have the necessary import licenses for Flanges products in your destination country.
Is Dongying Lake Petroleum Technology Company a verified supplier?
Yes, Dongying Lake Petroleum Technology Company 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 4145h 3 1/2" 6 3/8" Heave Weight Drill Pipe?
The key specifications for 4145h 3 1/2" 6 3/8" Heave Weight Drill Pipe supplied by Dongying Lake Petroleum Technology Company include 4145H Heavy Weight Drill Pipe (HWDP), API 5D / API 7-1; 4145H Chromoly Steel Alloy, and 3-1/2 Inch (88.9mm) Nominal Pipe Body OD. 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 4145h 3 1/2" 6 3/8" Heav?
Dongying Lake Petroleum Technology Company offers 4145h 3 1/2" 6 3/8" Heav with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import 4145h 3 1/2" 6 3/8" Heav the most?
4145h 3 1/2" 6 3/8" Heav is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Dongying Lake Petroleum Technology Company through our platform.
What certifications does this 4145h 3 1/2" 6 3/8" Heav supplier hold?
Dongying Lake Petroleum Technology Company maintains international quality certifications. These ensure that the 4145h 3 1/2" 6 3/8" Heav meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for 4145h 3 1/2" 6 3/8" Heave Weight Drill Pipe on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Dongying Lake Petroleum Technology Company 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 Dongying Lake Petroleum Technology Company.
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