PRODUCTS

API 5CT Oil Pipe

Our oil pipeline steel is specially designed for oil and gas transportation, featuring high strength, corrosion resistance, and excellent weldability, making it suitable for harsh working environments and complex operating conditions in the petroleum industry. The product complies with international standards such as API 5L, covering various grades (e.g., X42 to X80), ensuring safe and reliable energy transportation. Custom sizes and coating options are available to meet your project requirements.

Casing is used for lining the complete borehole which has been dug into the ground to procure oil. Similar to the drill pipe, the oil well casing pipe is also subjected to axial tension, therefore they are required to be made from high-quality strong steel material. OCTG casing is large diameter pipe which are held in place in the borehole using cement.

The diameters of OCTG casing pipe range from 4.5″ to 36″. The well-cemented pipe acts as the structural component of the well and offer hole integrity. They prevent the well from collapsing when the drilling process is on. Good quality, well cemented casing can stay in place for the whole life of the well.


StandardAPI 5CT, GB, ISO11960, GOST
MaterialH40, J55, K55, N80-1, N80-Q, L80-1,L80-9Cr, L80-13Cr, P110, Q125 etc.
Outside Dia(mm)114.3MM -508MM(4 1/2"--20")
Wall Thickness(mm)5.21MM-16.13MM(9.5PPF--133PPF)
LengthR1, R2, R3
Thread TypesSTC, LTC, BTC, XC and Premium connection
InspectionNDT and other related rules specified in API 5CT and 5B
PackagingLoose package, Packaged in bundles(3Ton Max) , bundled pipes with two slings at the both end for easy loading and discharging, End with Plastic caps or as per requirement
Application1. Fluid pipe
2. Power Plant
3. Structure pipe
4. High and low pressure Boiler tube
5. Seamless pipe /tube for petroleum cracking
6. Conduit pipe
7. Scaffolding pipe pharmaceutical andship,building etc.
Payment30% T/T deposit in advance, 70% T/T balance within 5 days after B/L copy or 70%T/T balance, 100% Irrevocable L/C at sight, 100% Irrevocable L/C after receive B/L in 15 days
Advantages1. Reasonable price with excellent quality
2. Abundant stock and prompt delivery
3. Rich supply and export experience, sincere service



Our petroleum pipelines are manufactured from high-grade carbon and micro-alloyed steels, delivering exceptional yield strength and collapse resistance. Through precision wall thickness control and full-length quench & tempering treatment, the pipes achieve uniform mechanical properties with superior resistance to sulfide stress cracking (NACE MR0175 compliant). Our product range covers casing, tubing, and line pipes with various threading types and anti-corrosion coatings (FBE/3LPE). All products strictly comply with API 5CT/5L, ISO 11960 and customer-specific standards, ensuring reliability in drilling, extraction and transmission applications.





Our oil pipelines are produced using state-of-the-art JCOE forming technology and submerged arc welding (SAW) processes. The manufacturing process features automated ultrasonic testing systems, full-length X-ray inspection, and computer-controlled hydrostatic testing up to 30 MPa. Additionally, the production line includes in-line heat treatment for stress relief and precision end-facing equipment, ensuring strict dimensional tolerances (OD ±0.5%, WT ±5%) are consistently met.





In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.





Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.


Q: Are You Manufacture or Trade Company?
A: We are the professional manufacturer of pipeline products located in Tianjin,China. Welcome to contact us and visit our factory before you place orders.
Q: How do you guarantee the quality?
A: We can send free samples to you, we can accept third-party testing.
We also have test certificate, every batch goods will be testing before shipment, and the testing report will delivery to you with your goods.
Q: Can I get free samples?
A: Of course you can. We can produce according to your samples or technical drawings. Contact us by whatsapp or email to get free samples and you will get the sample after 3-7 working days.
Q: What is the MOQ? 
A: If you are scheduling to place a small quantity order or trial order, feel free to contact us, we can meet your requirements.
Q: Can you OEM or ODM?
A: Yes, we have a strong developing team. The products can be made according to your request

Message
Nameis requiredNameformat error
Mobileis requiredMobileformat error
Companyis requiredCompanyformat error
Addressis requiredAddressformat error
Emailis requiredEmailformat error
Messageis required