Spiral Drill Collars
- Estimate pricing$ 30 – $ 8347.5Est. category range
- AvailabilityIn stock
- Material4145H MOD modified chromium-molybdenum alloy steel
- StandardAPI Spec 7-1
- Thread treatmentPhosphated, copperized, or cold worked
- Thread machiningCNC lathes, double-shouldered and special thread
Products Description
The spiral drill collars are made of 4145HMOD modified chromium-molybdenum alloy steel according to API Spec 7-1 . All threads can be phosphated,copperised or cold worked. All threads are machined with CNC Lathes-Double-Shouldered and a special thread, the max diameter of spiral drill collar is 14 inch. Out diamete: 3 7/8"~ 14"(inch) Depth of cut: 4.0 ~ 11.9 (mm) Length: 9150+150(mm) Standard size�?� for�?� drill collar Connection # OD ID L mm DF mm Bending strength ratio mm in mm In NC23-31 79.4 3 1/8 31.8 1 1/4 9150 76.2 2.57:1 NC26-35 88.9 3 1/2 38.1 1 1/2 9150 82.9 2.42:1 NC31-41 104.8 4 1/8 50.8 2 9150 or 9450 100.4 2.43:1 NC35-47 120.7 4 3/4 50.8 2 9150 or 9450 114.7 2.58:1 NC38-50 127.0 5 57.2 2 1/4 9150 or 9450 121.0 2.38:1 NC44-60 152.4 6 57.2 2 1/4 9150 or 9450 144.5 2.49:1 NC44-60 152.4 6 71.4 2 13/16 9150 or 9450 144.5 2.84:1 NC44-62 158.8 6 1/4 57.2 2 1/4 9150 or 9450 149.2 2.91:1 NC46-62 158.8 6 1/4 71.4 2 13/16 9150 or 9450 150.0 2.63:1 NC46-65 165.1 6 1/2 57.2 2 1/4 9150 or 9450 154.8 2.76:1 NC46-65 165.1 6 1/2 71.4 2 13/16 9150 or 9450 154.8 3.05:1 NC46-47 171.4 6 3/4 57.2 2 1/4 9150 or 9450 159.5 3.18:1 NC50-67 171.4 6 3/4 71.4 2 13/16 9150 or 9450 159.5 2.37:1 NC50-70 177.8 7 57.2 2 1/4 9150 or 9450 164.7 2.54:1 NC50-70 177.8 7 71.4 2 13/16 9150 or 9450 164.7 2.73:1 NC50-72 184.2 7 1/4 71.4 2 13/16 9150 or 9450 169.5 3.12:1 NC56-77 196.8 7 3/4 71.4 2 13/16 9150 or 9450 185.3 2.70:1 NC56-80 203.2 8 71.4 2 13/16 9150 or 9450 190.1 3.02:1 6 5/8 REG 209.6 8 1/4 71.4 2 13/16 9150 or 9450 195.7 2.93:1 NC61-90 228.6 9 71.4 2 13/16 9150 or 9450 212.7 3.17:1 7 5/8 REG 241.3 9 1/2 76.2 3 9150 or 9450 223.8 2.81:1 NC70-97 247.6 9 3/4 76.2 3 9150 or 9450 232.6 2.57:1 NC70-100 254.0 10 76.2 3 9150 or 9450 237.3 2.81:1 8 5/8REG 279.4 11 76.2 3 9150 or 9450 266.7 2.84:1 8 5/8REG 355.6 14 76.2 3 9150 or 9450 266.7 2.84:1
Product Categories
Products Specification
- Material4145H MOD modified chromium-molybdenum alloy steel
- StandardAPI Spec 7-1
- Thread treatmentPhosphated, copperized, or cold worked
- Thread machiningCNC lathes, double-shouldered and special thread
- Maximum outer diameter14 in
- Outer diameter range3 7/8 in - 14 in
- Depth of cut range4.0 - 11.9 mm
- Length9150 ± 150 mm
- Connection typesNC and REG series (various sizes)
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The Spiral Drill Collars are made of 4145H MOD modified chromium-molybdenum alloy steel according to API Spec 7-1. Threads can be phosphated, copperized, or cold worked, and are machined with CNC lathes using double-shouldered and special thread profiles. The maximum outer diameter is 14 inches. The seller provides a table of standard sizes covering outer diameters from 3 7/8 inches to 14 inches, depths of cut from 4.0 to 11.9 mm, and a length of 9150 ± 150 mm, with various connection types including NC and REG series.
Import Wholesale Spiral Drill Collars for Your Business Needs
At Global Trade Plaza, we understand that quality is paramount in the B2B sector. As updated by the seller, the Spiral Drill Collars is manufactured to meet rigorous industry standards, ensuring reliability and performance for your business operations. Designed with businesses in mind, the product offers outstanding end user experience. As your business grows, so do your needs, hence it is designed to scale with you, offering flexible solutions that adapt to changing demands. Explore more such product varieties from sellers, suppliers, manufacturers and exporters at our website. You can even import or export Spiral Drill Collars or connect with global Importers and Exporters online.
About Supplier
Metalwork Petroleum Technology Co, Ltd. is a premier leather products export company, established in 2010 and based in China. With a decade of experience, Metalwork Petroleum Technology Co, Ltd. has built a reputation for delivering high-quality leather goods to clients across the globe. The company specializes in a wide range of leather products, including bags, wallets, belts, and custom leather accessories, all crafted with precision and attention to detail. Leveraging advanced manufacturing techniques and stringent quality control processes, Metalwork Petroleum Technology Co, Ltd. ensures that each product meets the highest standards. The company’s commitment to excellence, timely delivery, and customer satisfaction has made it a trusted name in the international market.Metalwork Petroleum Technology Co, Ltd. continues to expand its global footprint, exporting its superior leather products to various countries, while maintaining strong relationships with clients worldwide.
Supplier Details for Spiral Drill Collars
- Established - 16 Oct, 2026
- Business Type - Contact Seller
- Deals in Product Type - Drilling Machines & Tools
- Country - China
Frequently Asked Questions (FAQs) on Spiral Drill Collars
1. What is the Seller’s Policy on Payment for Spiral Drill Collars?
The trusted supplier, Metalwork Petroleum Technology Co, Ltd., accepts for transactions related to Spiral Drill Collars. All payments are processed securely via the Global Trade Plaza B2B platform, ensuring buyer protection and supplier credibility.
2. How to Place an Order for Spiral Drill Collars with Metalwork Petroleum Technology Co, Ltd.?
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Placing an order for Spiral Drill Collars with Metalwork Petroleum Technology Co, Ltd. is quick and straightforward on Global Trade Plaza, a leading B2B marketplace for global buyers and suppliers. You can:
3. What Should You Consider When Buying Spiral Drill Collars Online in 2025?
Product specifications (material, durability, features) Quality certifications and compliance Supplier credibility and customer reviews Minimum Order Quantity (MOQ) and bulk pricing Lead time and delivery timelines
When purchasing Spiral Drill Collars from a B2B marketplace in 2025, focus on the following critical factors:
Comparing prices and communicating directly with verified sellers like Metalwork Petroleum Technology Co, Ltd. can help ensure value for money and better sourcing decisions.
4. Who Are the Top B2B Importers and Verified Buyers of Spiral Drill Collars on Global Trade Plaza?
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Global Trade Plaza is home to a vast network of verified B2B buyers, wholesalers, distributors, and importers of Spiral Drill Collars across industries and countries. To discover the most active and high-value buyers:
5. What is the Port of Dispatch, Estimated Price, and Packaging Type Offered by Metalwork Petroleum Technology Co, Ltd.?
Metalwork Petroleum Technology Co, Ltd., a reliable B2B trader from China, dispatches Spiral Drill Collars primarily through the port at China. Packaging types (e.g., bulk, custom, eco-friendly) and estimated pricing may vary based on order volume and destination. To get detailed logistics and pricing information, reach out via the Inquire Now button or Sign Up for direct supplier interaction.
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