5-1/2" Ltc Nq Casing Coupling (API Standard, Oil & Gas Drilling Use)¹

Product Descriptioncompany profileTianJin Dongfanglong Machine Manufacture Co., Ltd was established in 1999 and is a national high-tech enterprise concentrating on petroleum specialized pipes, petroleum specialized drilling and production tools, and petroleum specialized automation equipment. The company has 46 engineers and highly skilled talents, over 50 independent intellectual property rights, and have created the industry's first professional e-commerce platform, the "Dongfang Yunlong E-commerce Platform". It has formed an industrial chain that integrates the design, research and development, manufacturing, sales, testing and experimentation,and technical services of petroleum machinery products and CNC automation equipment, which can meet customers' full cycle service needs for products.  Since its establishment, the company has successively passed the ISO9001 quality system, ISO14001 environmental management system, ISO45001 occupational health and safety management system certification, HSE health, safety and environmental management system certification, and integration management system certification. In 2007, the company obtained the API 5CT certificate authorized by the American Petroleum Institute and the quality supplier assessment certificate issued by BV France. With excellent system management and quality control, Dongfanglong won the "Mayor of Puyang City Quality Award";  Dongfanglong utilizes a large digital platform as its carrier to fully integrate customer resources, analyze customer types, expand business types, and conveniently and quickly complete cross-border electronic business. It aims to focus on the company's proprietary products, drive the sales of petroleum machinery in the industry, and quickly occupy and expand the market share of petroleum machinery products through e-commerce platform sales. By continuously cultivating and introducing sales elites, improving the official website sales platform, and increasing international promotion investment, our products are exported to 31 countries and regions such as the United States, Russia, and the United Arab Emirates.Product IntroductionThe 5-1/2" LTC NQ Casing Coupling is manufactured strictly in accordance with API 5CT standards. It is mainly used for connecting casing pipes in oil and gas drilling operations. Made of high-quality alloy steel, it provides excellent strength, tight sealing, corrosion resistance, and reliable threaded connection performance. It is widely applied in challenging drilling conditions to ensure safe and efficient oilfield operations.Key FeaturesAPI standard compliant, globally recognized quality assuranceHigh strength material, withstands high pressure and temperaturePrecise threaded connection, reliable sealing, prevents leakageExcellent corrosion resistance, suitable for harsh drilling environmentsEasy installation & maintenance, long service life, cost-effectiveFAQQ: Can I customize the thread type or steel grade?A: Yes, we support API EUE, NU, LC, BTC, and premium thread options.Q: What's the delivery time?A: Normally 15–25 days for standard couplings; custom orders may take 30–40 days.Q: What export documents do you provide?A: Commercial invoice, packing list, MTC, certificate of origin, API license copy, etc.Q: How can I place an order?A: Contact us via email or phone to confirm specs and place a purchase order.Why Choose Us ?API Certified FactoryCompetitive Price with OEM ServiceFast Delivery & Export AssistanceStrong After-Sales SupportGlobal Supply CapabilityCustom Engineering Service

OK ! We suggest you detail your product requirements and company information here.
Enter between 20 to 4,000 characters.
Your inquiry content must be between 20 to 4000 characters.