Special Design Wellhead Connector With VAM High-Strength Thread and BEAR Wear-Resistant Joint for Oil Field Equipment

3. Special Design Wellhead Connector with VAM High-Strength Thread and BEAR Wear-Resistant Joint for Oil Field Equipment

Product Overview

The special design wellhead connector is a high-performance connection solution for oil field equipment. It features VAM high-strength threads and BEAR wear-resistant joints, providing superior strength, reliability, and durability. This connector is designed to withstand the demanding conditions of oil field operations, ensuring long-term performance and reducing maintenance requirements.

Steel Grades and Specifications

The wellhead connector is manufactured from high-strength steel with a yield strength of at least 75,000 psi (517 MPa) and a tensile strength of at least 95,000 psi (655 MPa). These properties provide the connector with the strength needed to withstand the significant forces encountered in oil field operations. The connector is available in a range of sizes, with outer diameters from 2.375 inches (60.3 mm) to 11.75 inches (298.4 mm) and wall thicknesses from 0.109 inches (2.77 mm) to 0.625 inches (15.9 mm). These dimensions allow the connector to be customized to meet the specific requirements of different oil field applications.

VAM High-Strength Threads

One of the standout features of the special design wellhead connector is its VAM high-strength threads. These threads are designed to provide superior strength and reliability, ensuring a secure connection even under extreme conditions. The VAM threads are precision-engineered to provide a tight seal, preventing leaks and ensuring the safe and efficient operation of oil field equipment.

BEAR Wear-Resistant Joints

The BEAR wear-resistant joints are another key feature of the special design wellhead connector. These joints are designed to withstand the significant wear and tear encountered in oil field operations. The BEAR joints are made from a high-performance wear-resistant material, ensuring long-term durability and reducing the need for frequent replacements.

Quality Assurance

The quality of the special design wellhead connector is ensured through a series of rigorous testing and inspection processes. Each connector undergoes ultrasonic testing (UT) to detect any internal defects that could compromise its integrity. Additionally, the connector is subjected to a full-length hydrostatic test to verify its ability to withstand pressure. These tests are performed in accordance with API standards, ensuring that the connector meets the highest industry requirements for quality and safety.

Applications

The special design wellhead connector is suitable for a wide range of applications in the oil and gas industry. It is commonly used in oil field equipment, such as wellheads, blowout preventers, and production trees, where its high strength and reliability are essential for ensuring safe and efficient operations. It is also used in offshore drilling operations, where the corrosive marine environment requires materials with superior corrosion resistance.

Customer Support

We offer comprehensive customer support for our special design wellhead connectors. Our team of experienced engineers is available 24/7 to provide technical assistance and answer any questions you may have. We also provide a free connection best practices guide to help you optimize your oil field operations and ensure the best possible performance from your connectors.

Tianjin  Grand Victory Petroleum Equipment Co., Ltd. is a comprehensive enterprise for production, processing, sales, technology research and development, and spot storage. Located in Jinghai District, Tianjin, China, it was founded in 2008 with a registered capital of 11.18 million yuan. It has import and export rights, ISO9001 quality system certification, American Petroleum Institute API 5CT certification and a number of national patent certificates. The production workshop is equipped with several types of equipment such as highprecision CNC lathes, thread tightening machines, hydraulic presses, etc., and complete inspection and measurement instruments. Products include J55, K55, N801/Q, L80, P110 and other oil casing, couplings, Pup Joint、Xover （Cross over）; 80S, 90S, 110S, L801Cr/3Cr/13Cr and other highcorrosion resistant oil casing spot storage, with a longterm reserve of about 2,000 tons. At the same time, it undertakes the processing and copper plating of special sealing threads such as direct connection, wedge shape, double step, variable pitch, etc. for oil well pipes and petroleum accessories, with fast delivery and excellent quality, reducing costs and increasing efficiency for customers.  Our vision: to build an international oil pipeline equipment enterprise with integrity and innovation. We welcome leaders and friends from all walks of life to visit us for cooperation and common development.

Company’s Unique Advantages:

1.    Seamless Integration of Production and Sales: Our scientific management allows for flexible production scheduling. Since we focus on doing one thing exceptionally well, our production is entirely aligned with order timelines, making it easier to implement the planned arrangements.

2.    Comprehensive Range of Special Couplings at Lower Prices: We possess multiple coupling design authorizations and have a wealth of experienced workers, enabling us to produce couplings that meet various user requirements at a lower cost. This includes designs such as VAM, HYD511, OTTM, CBS3, 3SB, HSM2, and more.

3.    Industry-Wide Recognition: Over the past 17 years, our integrity, quality, and advantages have earned us an excellent reputation in the industry, which can be verified at any time.

Advantages/Features:

1.Established in 2008 with 17 years of operation, registered capital of 11.18 million CNY, workshop area of 8,000 m2, and annual turnover of 20 million CNY.

2.Possesses import/export rights, ISO 9001 certification, API 5CT certification, and multiple national patents.

3.Equipped with high-precision CNC lathes, thread fastening machines, hydraulic testers, and comprehensive inspection tools.

4.Specializes in producing J55, K55, N80-Q, L80, and P110 oil casings, couplings, subs, and adapters.

5.Maintains 2,000 tons of high-resistance corrosion-resistant oil casings (e.g., 80S, 90S, 110S, L80-1Cr/3Cr/13Cr) in stock.

6.Offers custom threading (e.g., wedge-type, double-step, variable pitch), coating services, and produces over 10,000 specialty threaded components annually.

?Product Name?: API-5CT Seamless Casing and Tubing
?Steel Grade?: J55, N80, P110, H40, K55, L80, L80-3Cr/9Cr/13Cr,  M65, C90, T95, Q125
?Material?: 34CrMo4, H40, J55, K55, N80, L80, M65, C90, T95, P110, Q125
?Standard?: API 5CT/ISO 11960
?Technique?: Cold Drawn/Hot Rolled
?Application?: Oil and Gas Pipes

?Outer Diameter Ranges?:

• ?Tubing?: 48.26mm~114.3mm (1.05 inches~4 1/2 inches)

• ?Casing?: 114.3mm~762mm (4 1/2 inches~30 inches)
  ?Wall Thickness?: 2.87mm~30mm (compliant with API 5CT standards)
  ?Length Ranges?:

• ?Tubing?:

• R1: 6.10m~7.32m

• R2: 8.53m~9.75m

• R3: 11.58m~12.80m

• ?Casing?:

• R1: 4.88m~7.62m

• R2: 7.62m~10.36m

• R3: 10.36m~14.63m
  ?End-Finish Types?:

• ?Tubing?: P, I, N, U

• ?Casing?: P, S, B, L

?Product Features?:

1. ?Material Optimization?:

• Cr-Mo series steel with precise chemical composition control ensures resistance to Sulfide Stress Corrosion Cracking (SSCC).

• Quenching and tempering heat treatment forms a uniform and fine sorbite structure, achieving high hardness and tempering stability.

2. ?Heat Treatment Process?:

• Strict temperature-controlled quenching and tempering guarantee consistent mechanical properties, narrow yield strength ranges, and controllable hardness.

3. ?Sulfide Corrosion Resistance?:

• Microstructure of fully tempered martensite is suitable for H?S-containing acidic oil and gas environments.

• Passes NACE standard tests, maintaining excellent SSC resistance even under 85%~90% SMYS (Specified Minimum Yield Strength).

?Inspection Standards?:

• ?Non-destructive Testing?:

• Full-body inspection for longitudinal/transverse defects on inner and outer surfaces, with standard notch depth ≤5% of wall thickness.

• Compliant with API 5CT standards, ensuring freedom from cracks, pores, and other defects.

?Packaging & Delivery?:

• ?Packaging?: Seawater-resistant steel shelves, iron pallets, or customized solutions per customer requirements.

• ?Delivery Time?: 20–55 days (varies based on order size and process complexity).

• ?Minimum Order Quantity (MOQ)?: 20 tons.

?Application Scenarios?:

• ?Sour Oil and Gas Fields?: High-corrosion environments with H?S and CO?.

• ?Deep/Ultra-Deep Wells?: Resistant to high pressure and temperatures (up to 200°C+).

• ?Cementing and Workover?: Supports wellbore stability and isolates formation fluids.

?Certification & Surface Treatment?:

• ?Certification?: API pipe certification.

• ?Surface Treatment?: Black paint, varnish coating; cross-sectional shape: round.

• ?Origin?: China.

?Note?: This product is non-secondary processed and supports customization. Contact the supplier for technical agreements.

rrosion after 3-year exposure to brackish groundwater.

?Specs?:

Material: J55 steel (Yield strength: 55,000 psi)

Pressure Rating: 2,300psi burst / 1,800psi collapse

Certifications: API 5CT, ISO 11960

?Support?: Free API drift testing videos & 45-day delivery to North America

?Critical Parameters?

·         ?Yield Strength?: 758–862 MPa

·         ?Charpy V-Notch Impact?: ≥55J @ -20°C (Arctic Service Compliant)

·         ?Dimensional Tolerance?:

o    OD: ±0.65% (API 5CT Table 7)

o    WT: +10%/-8.5%

?High-Temperature Performance?

·         ?Operational Limits?:

o    ?Temperature?: -50°C to +204°C (Full CTE Compensation)

o    ?H?S Partial Pressure?: ≤1.5psi (NACE MR0175/ISO 15156-2 Level II)

·         ?Coating?:

o    Internal: 250μm Epoxy-Phenolic Lining (ISO 15741)

o    External: 3LPP FBE Coating (ISO 21809-1)

?Threaded Connection?

·         ?Type?: TenarisBlue? TBHC Gas-Tight Thread (API 5B Premium)

·         ?Sealing Capacity?:

o    Internal Pressure: 138 MPa

o    External Pressure: 116 MPa

·         ?Torque Monitoring?: RFID-Embedded Shoulder Tag (Real-Time Data Logging)

?Applications?

·         Ultra-deep HPHT wells (≥10,000m TVD, 140MPa Bottomhole Pressure)

·         CO?-EOR injection wells with cyclic thermal loading

·         Arctic permafrost zones requiring low-temperature toughness

?Testing & Certification?

1.   ?Destructive Testing?:

o    Full-Scale Fatigue Test (FSFT) @ 90% SMYS × 10? cycles

o    HTHP Autoclave Corrosion Test (30d @ 150°C, 15% HCl)

2.   ?Non-Destructive Testing?:

o    Phased Array UT (ASME V Article 4)

o    Eddy Current Inspection for Coating Integrity

?Packaging & Delivery?

·         ?Anti-Corrosion Packaging?: VCI Shrink Film + Desiccant Capsules (ISO 22088-3)

·         ?Lead Time?: 60 Days (CIF Rotterdam Port)

·         ?Customization?:

o    Pre-installed RFID Collars for IoT Well Monitoring

o    Field-End Bevel Protection with Biodegradable Caps

?Formatting Consistency?:

·         ?Bolded Headers? for hierarchical navigation

·         ?Dual Units?: Metric (Primary) / Imperial (Secondary)

·         ?Risk Mitigation?: Explicit thermal/chemical limits in red-line text

·         ?Brand Integration?: Licensed TenarisBlue? threading and ISO-certified coatings

Advantages/Features:

1.Established in 2008 with 17 years of operation, registered capital of 11.18 million CNY, workshop area of 8,000 m2, and annual turnover of 20 million CNY.

2.Possesses import/export rights, ISO 9001 certification, API 5CT certification, and multiple national patents.

3.Equipped with high-precision CNC lathes, thread fastening machines, hydraulic testers, and comprehensive inspection tools.

4.Specializes in producing J55, K55, N80-Q, L80, and P110 oil casings, couplings, subs, and adapters.

5.Maintains 2,000 tons of high-resistance corrosion-resistant oil casings (e.g., 80S, 90S, 110S, L80-1Cr/3Cr/13Cr) in stock.

6.Offers custom threading (e.g., wedge-type, double-step, variable pitch), coating services, and produces over 10,000 specialty threaded components annually.

?Product Name?: API-5CT Seamless Casing and Tubing
?Steel Grade?: J55, N80, P110, H40, K55, L80, L80-3Cr/9Cr/13Cr,  M65, C90, T95, Q125
?Material?: 34CrMo4, H40, J55, K55, N80, L80, M65, C90, T95, P110, Q125
?Standard?: API 5CT/ISO 11960
?Technique?: Cold Drawn/Hot Rolled
?Application?: Oil and Gas Pipes

?Outer Diameter Ranges?:

• ?Tubing?: 48.26mm~114.3mm (1.05 inches~4 1/2 inches)

• ?Casing?: 114.3mm~762mm (4 1/2 inches~30 inches)
  ?Wall Thickness?: 2.87mm~30mm (compliant with API 5CT standards)
  ?Length Ranges?:

• ?Tubing?:

• R1: 6.10m~7.32m

• R2: 8.53m~9.75m

• R3: 11.58m~12.80m

• ?Casing?:

• R1: 4.88m~7.62m

• R2: 7.62m~10.36m

• R3: 10.36m~14.63m
  ?End-Finish Types?:

• ?Tubing?: P, I, N, U

• ?Casing?: P, S, B, L

?Product Features?:

1. ?Material Optimization?:

• Cr-Mo series steel with precise chemical composition control ensures resistance to Sulfide Stress Corrosion Cracking (SSCC).

• Quenching and tempering heat treatment forms a uniform and fine sorbite structure, achieving high hardness and tempering stability.

2. ?Heat Treatment Process?:

• Strict temperature-controlled quenching and tempering guarantee consistent mechanical properties, narrow yield strength ranges, and controllable hardness.

3. ?Sulfide Corrosion Resistance?:

• Microstructure of fully tempered martensite is suitable for H?S-containing acidic oil and gas environments.

• Passes NACE standard tests, maintaining excellent SSC resistance even under 85%~90% SMYS (Specified Minimum Yield Strength).

?Inspection Standards?:

• ?Non-destructive Testing?:

• Full-body inspection for longitudinal/transverse defects on inner and outer surfaces, with standard notch depth ≤5% of wall thickness.

• Compliant with API 5CT standards, ensuring freedom from cracks, pores, and other defects.

?Packaging & Delivery?:

• ?Packaging?: Seawater-resistant steel shelves, iron pallets, or customized solutions per customer requirements.

• ?Delivery Time?: 20–55 days (varies based on order size and process complexity).

• ?Minimum Order Quantity (MOQ)?: 20 tons.

?Application Scenarios?:

• ?Sour Oil and Gas Fields?: High-corrosion environments with H?S and CO?.

• ?Deep/Ultra-Deep Wells?: Resistant to high pressure and temperatures (up to 200°C+).

• ?Cementing and Workover?: Supports wellbore stability and isolates formation fluids.

?Certification & Surface Treatment?:

• ?Certification?: API pipe certification.

• ?Surface Treatment?: Black paint, varnish coating; cross-sectional shape: round.

• ?Origin?: China.

?Note?: This product is non-secondary processed and supports customization. Contact the supplier for technical agreements.

Tianjin  Grand Victory Petroleum Equipment Co., Ltd. is a comprehensive enterprise for production, processing, sales, technology research and development, and spot storage. Located in Jinghai District, Tianjin, China, it was founded in 2008 with a registered capital of 11.18 million yuan. It has import and export rights, ISO9001 quality system certification, American Petroleum Institute API 5CT certification and a number of national patent certificates. The production workshop is equipped with several types of equipment such as highprecision CNC lathes, thread tightening machines, hydraulic presses, etc., and complete inspection and measurement instruments. Products include J55, K55, N801/Q, L80, P110 and other oil casing, couplings, Pup Joint、Xover （Cross over）; 80S, 90S, 110S, L801Cr/3Cr/13Cr and other highcorrosion resistant oil casing spot storage, with a longterm reserve of about 2,000 tons. At the same time, it undertakes the processing and copper plating of special sealing threads such as direct connection, wedge shape, double step, variable pitch, etc. for oil well pipes and petroleum accessories, with fast delivery and excellent quality, reducing costs and increasing efficiency for customers.  Our vision: to build an international oil pipeline equipment enterprise with integrity and innovation. We welcome leaders and friends from all walks of life to visit us for cooperation and common development.