Oil and Gas Well Casing Tube API 5CT N80 K55 OCTG Casing Tubing Heavy-Duty Low Price

• Customization: Available
• Type: Seamless/Welded
• Technique: Hot/Cold Rolled,Cold Draw,ERW,Saw,Efw,Extrude
• Model NO.: J55 K55 N80-1 N80q R95 M65 L80 C90 T95 C110 P110
• Material: Carbon,Stainless,Alloy
• Surface Treatment: Black/Varnishing/Polished/Oiled/Galvanized
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Payment: T/T L/C
• Certificate: CCS, ABS, BV API, ISO9001
• Thickness: Customizable
• Width: Customizable
• Delivery: at Stock or 7-15 Days According to The Quantity
• Grade: J55 K55 N80-1 N80q R95 M65 L80 C90 T95 C110 P110
• MOQ: Low MOQ
• Quality Control: 100% Inspection
• Standard: API Spec 5L
• Transport Package: Neutral Standard Export Seaworthy Packing
• Specification: As customer′ s requirement
• Trademark: TONGNO
• Origin: China
• HS Code: 73042900
• Production Capacity: 200000ton/Year

Product Description

 

 

Product Description

Seamless steel pipes are an integral part of modern infrastructure, seamlessly integrating into our daily lives. A pivotal role they play is in the energy sector, acting as vital conduits for the transmission of oil and natural gas. These pipes can be strategically laid either over vast stretches of land or deep beneath the sea, thus significantly enhancing the efficiency of energy distribution across diverse regions. This method of transportation offers unparalleled advantages over conventional land or sea transport, making it an indispensable element in the energy supply chain.
Tubes and casings designed for oil extraction are distinct from ordinary seamless steel pipes. Given their deployment in challenging geological environments, they face variable geological conditions and intricate underground stress dynamics. These pipes must endure the combined forces of tension, compression, bending, and torsion, necessitating superior quality standards for the casings. The operational environments for oil well pipes are notably demanding, requiring them to perform reliably under extreme conditions.
For example, tubing and casing strings are engineered to withstand tremendous pressures-both internally and externally-often reaching several thousand atmospheres. Additionally, they must support tensile loads amounting to tens of tons while enduring elevated temperatures and corrosive environments. These conditions demand exceptional durability and resilience from the materials used.

Standard:

API SPEC 5L-American Petroleum Institute Standard

Uses:

Designed for seamless steel tubing and casing in oil wells, these pipes excel in performance and reliability.


Main production steel pipe grades:

J55, K55, N80-1, N80Q, R95, M65, L80, C90, T95, C110, P110, Q125



Dimensional tolerances:

Pipe Types	Diameter(D)		Wall thickness(S)
	Outer diameter of steel pipe(mm)	Permissible deviation(mm)	Permissible deviation(mm)
Cold Drawn Pip	<114.3	±0.79	-12.50%
	≥114.3	-0.5%,+1%

Mechanical properties:

Standard	Grade	Tensile strength (MPa)	Yield strength (MPa)
API SPEC 5CT	J55	≥517	379~552
	K55	≥517	≥655
	N80	≥689	552~758
	L80(13Cr)	≥655	552~655
	P110	≥862	758~965

Chemical composition:

Standard

Grade

Chemical Components(%)

C

Si

Mn

P

S

Cr

Ni

Cu

Mo

V

Als

API SPEC 5CT

J55K55

0.34~0.39

0.20~0.35

1.25~1.50

≤0.020

≤0.015

≤0.15

≤0.20

≤0.20

≤0.020

(37Mn5)

N80

0.34~0.38

0.20~0.35

1.45~1.70

≤0.020

≤0.015

≤0.15

0.11~0.16

≤0.020

(36 Mn2V)

L80(13Cr)

0.15~0.22

≤1.00

0.25~1.00

≤0.020

≤0.010

12.0~14.0

≤0.20

≤0.20

≤0.020

P110

0.26~0.35

0.17~0.37

0.40~0.70

≤0.020

≤0.010

0.80~1.10

≤0.20

≤0.20

0.15~0.25

≤0.08

≤0.020

(30CrMo)

Detailed Photos

 

Certifications

Packaging & Shipping

Packing Details:
1. Our seamless pipes are meticulously packed in export sea-worthy packaging, complete with water-proof paper to ensure absolute protection during transit.
2. Boasting a team of seasoned professionals, we ensure safe loading and secure fixing, promising a flawless delivery.

Delivery Detail: Expect swift delivery within an impressive 7-10 working days after deposit confirmation, or tailored to your specific order quantity.

Company Profile

Wuxi Tongno Special Steel Co., Ltd. Established in 2013 with a registered capital of 5 million yuan, Wuxi Tongno Special Steel Co., Ltd. is a distinguished enterprise specializing in the manufacture of seamless steel pipes. Following years of swift and successful growth, we now boast three distinct seamless steel pipe production lines that stand as a testament to our expertise and commitment to excellence.
At Wuxi Tongno Special Steel Co., Ltd., we pride ourselves on upholding the business philosophy of 'quality first, customer first.' Our seamless steel pipes are renowned for their high precision, diverse wall thicknesses, and ability to cater to small quantities across numerous varieties-all with an unmatched pace. Our offerings consistently achieve domestic excellence, particularly in the production of small-diameter medium-thick-walled and large-caliber thin-walled alloy seamless steel pipes. Enjoying a stellar reputation both at home and abroad, our products are favored in various project constructions, showcasing our manufacturing prowess and energy.

Our Advantages

1. Exceptional Service: Experience unparalleled commitment: We ensure that each inquiry receives a prompt response, guaranteed within just 12 hours.

2. Certifications: We proudly uphold a reputation of excellence with our ISO 9001, CE, and SGS certifications, underscoring our unwavering commitment to quality.

3. Cost - Effective Quality: Access premium products at competitive prices. Our seamless integration from factory to market ensures top-notch quality without the middleman.

4. Robust Production Capacity: Our powerhouse facility boasts a formidable monthly output of 20,000 tons, ensuring uninterrupted and efficient production cycles.

5. Flexible Payment Terms: Enjoy the ease of diverse payment options, including T/T and L/C, crafted to suit your financial preferences.

6. Swift Delivery & Standard Export Packaging: Anticipate swift, reliable deliveries with products meticulously packaged to align with international export guidelines.

7. Factory - Direct Advantage: Our direct-from-factory model empowers you with competitive rates while steadfastly maintaining impeccable quality.

8. Third - Party Testing: We welcome and encourage third-party testing, offering transparency and assurance of our product quality.

9. Expert Team Support: Our dedicated professional sales team, coupled with a dependable factory, provides unwavering support every step of the way.

10.Dedicated to Customization: Your unique specifications are the heart of our service commitment. We promise to transform every customized request into reality.

 

FAQ

Q1: What are your primary product offerings?

A1: We are a leading manufacturer and supplier of high-quality steel products, specializing in:
Stainless Steel & Carbon Steel: Sheets/plates, coils, and pipes/tubes (both seamless and welded)
Structural Components: Various bar profiles (round, square, hexagonal, flat, angle), C-channels, and H/I-beams
Custom Fabrications: Tailored solutions to meet specific project requirements

Q2: What quality assurance measures do you have in place?

A2: We maintain stringent quality control through:
Comprehensive Mill Test Certificates provided with all shipments
Optional third-party inspection services (SGS, BV, etc.)
ISO-certified manufacturing processes
Rigorous in-house testing and quality checks

Q3: What are your standard packaging terms?

A3: Our standard packaging includes:
Bundled or coiled goods secured with steel rods/straps
Custom packaging solutions available per customer specifications
Export-grade packaging to ensure optimal protection during transit

Q4: What is your typical delivery timeline?

A4: We offer flexible delivery options:
Stock items: Ready for shipment within 3 business days after deposit confirmation
Made-to-order items: Production typically completed within 7-15 working days post-deposit
Expedited options available for urgent requirements

Q5: What competitive advantages does your company offer?

A5: We differentiate ourselves through:
A team of highly skilled professionals and technical experts
Industry-leading pricing without compromising quality
Unparalleled after-sales support and customer service
Extensive inventory and reliable supply chain management

Q6: Do you provide product samples?

A6: Yes, we're pleased to offer:
Complimentary small samples from existing inventory
Customer only responsible for shipping costs
Custom samples available for specific project needs

Q7: What are your payment terms?

A7: Our standard payment structure:
30% advance payment via T/T to initiate production/order
Remaining 70% balance due prior to shipment
Full documentation including product photos and packaging details provided before final payment

Why Choose Us?

√ Quality Assurance: Rigorous testing and certification
√Competitive Pricing: Cost-effective solutions without compromise
√ Reliable Delivery: On-time fulfillment guaranteed
√ Custom Solutions: Tailored to your exact specifications
√ Expert Support: Technical guidance at every stage
For further inquiries or specific requirements, please contact our sales team. We're committed to providing exceptional service and top-quality steel products for your projects.