2 7/8”thick Mother Coupling With Flat Type Male Coupling N80;4 1/2”thick Mother Coupling With Flat Type Female Coupling N80

Copper Plating Services: We produce tens of thousands of special couplings annually. 

Oilfield Connection Oil Pipe Reducers: 35CrMo. 

We can process various types of oil pipe couplings: 

 Specifications: 1.941/2 

 Thread Types: EUE (thickened), NUE (not thickened). 

Short Drill Pipe Conversion Joints: Oilfield connection oil pipe reducers 35CrMo, with specifications of 1.941/2 and various thread types. 

Variable Coupling Conversion Joints: Double male (PIN X PIN), one male and one female (PIN X BOX). 

Casing Couplings: 

 Specifications: 41/2 to 20 inches. 

 Thread Types: STC (Short Round Coupling), LTC (Long Round Coupling), BTC (Buttress Coupling). 

 We can also customize various couplings and joints according to drawings. 

Standards: API5CT, API5L, API5B. 

Oil Pipe Specifications: 23/8” to 41/2”, with end processing types NUE and EUE. 

We can also process various sizes of oil casing short joints, double male short joints, reducer short joints, and conversion joints according to orders, ranging from 2FT to 20FT.

Oil Casing Specifications: 41/2” to 20”, with thread types STC, LTC, BTC, etc. 

Materials: H40, J55, K55, N80, L80, C90, C95, T95, P110, Q125, 13Cr80, 13Cr110, Super 13Cr, etc.

We always adhere to the principle of prioritizing people before tasks, insisting on equipment and scientific management as the foundation to provide customers with highquality products. With a complete marketing network and service system, we ensure satisfactory service for our customers. We look forward to working together to create brilliance!

Advantages/Features:

Tianjin Grand Victory Petroleum Equipment Co., Ltd. is a comprehensive enterprise engaged in production, processing, sales, technical research and development, and inventory storage. Located in Jinghai District, Tianjin, China, it was founded in 2008 with a registered capital of 11.18 million RMB. The company has import and export rights, ISO 9001 quality system certification, API 5CT certification from the American Petroleum Institute, and multiple national patent certificates. The production workshop is equipped with several highprecision CNC lathes, thread rolling machines, hydraulic pressure machines, and complete inspection instruments.

Our products cover oil casings, couplings, short joints, and conversion joints, including J55, K55, N801/Q, L80, P110, as well as high corrosionresistant oil casings such as 80S, 90S, 110S, and L801Cr/3Cr/13Cr, with an inventory of approximately 2,000 tons maintained yearround. We also undertake special sealing thread processing for oil well pipes and petroleum fittings, including direct connection types, trapezoidal shapes, doublestep, and variable pitch threading, as well as copper plating services.

With fast delivery and high quality, we help customers reduce costs and increase efficiency. Our vision is to build an international petroleum pipeline equipment enterprise through integrity and innovation. We welcome leaders and friends from all sectors to visit and cooperate for mutual development.

1. Since 2008, we have 17 years of experience, a registered capital of 11.18 million RMB, an 8,000 m2 workshop, and an annual foreign trade turnover of 20 million RMB.

2. We have import and export rights, ISO 9001 quality system certification, API 5CT certification from the American Petroleum Institute, and multiple national patent certificates.

3. Our production workshop is equipped with several highprecision CNC lathes, thread rolling machines, hydraulic pressure machines, and complete inspection instruments.

4. Our products include J55, K55, N801/Q, L80, and P110 oil casings, couplings, short joints, and conversion joints.

5. We maintain a stock of high corrosionresistant oil casings, including 80S, 90S, 110S, and L801Cr/3Cr/13Cr, with an annual inventory of around 2,000 tons.

6. We provide processing services for special sealing threads, including direct connection types, trapezoidal shapes, doublestep, and variable pitch threading, producing tens of thousands of special couplings each year.

Tianjin Grand Victory Petroleum Equipment Co., Ltd. undertakes various special thread replacement coupling processing for oil casings, focusing on high gastightness threads. We offer special couplings, oil pipe special couplings, petroleum casing special couplings, and drill rod special couplings.

We can process special couplings for oil pipes ranging from 23/8 inches to 41/2 inches and special couplings for casings from 41/2 inches to 20 inches. We also accept special coupling processing for customersupplied materials, including special coupling pipe couplings, special coupling oil casings, special coupling petroleum casings, special coupling oil pipes, and special coupling protective caps, all processed according to drawings and specifications.

 Advantages of Special Couplings:

In the early use of oil well pipes, couplings were designed for different oil fields, blocks, and well conditions. However, with increasingly complex well conditions, there are higher requirements for the usage conditions of the pipelines. Various special couplings abroad have undergone testing, screening, and field practice, gradually forming over ten typical types of special couplings to meet the current needs of special oil fields. Although various special oil well materials can meet the needs of different well conditions, they share common advantages:

1. High Joint Strength: Can match or exceed the strength of the pipe body, suitable for deep and ultradeep wells.

2. Good Sealing Performance: Suitable for highpressure gas wells, oil wells, and thermal recovery wells.

3. Strong Resistance to Bending: Suitable for inclined wells, large displacement wells, and horizontal wells.

4. Easy to Connect and Tighten: Not easily disconnected, suitable for drilling operations in harsh environments such as deserts and oceans.

5. Good AntiSticking Performance: Can be loosened and retightened without damaging the threads.

6. Strong Resistance to OverTorque.

7. Good Corrosion Resistance.

Contact:Bone

Email:Bone@dlpoctg.com

Whatsapp/WeChat /Tel: +86-18222899636