Are you looking for reliable Oil casing and casing Suppliers in china? Look no further because we are here to provide you with the best quality products and excellent service. API 5ct Gr. L80-1 oil Pipe is one of our quality products that meets the highest industry standards and we are proud to be a leading supplier in China.
When looking for the right oil casing and casing suppliers in China, it is crucial to choose a Company that provides high-quality products. Our company is committed to providing quality products that meet the stringent requirements of the Oil and gas industry. Our API 5CT Gr.L80-1 Tubing is designed to withstand the harsh conditions of oil and gas exploration and production, making it a reliable choice for your operation.
As an excellent supplier of petroleum casing and casing in China, we understand the importance of providing customers with first-class products that meet their specific requirements. Our API 5CT Gr.L80-1 tubing is manufactured to the highest standards, ensuring it meets the industry’s strict specifications. With our extensive experience and expertise in this field, you can trust us to deliver reliable and durable products that meet and exceed your expectations.

In addition to providing high-quality products, we also prioritize excellent service. Our professional team is committed to providing excellent customer service, from the initial inquiry to the delivery of your order. We are committed to ensuring our customers have a positive experience and strive to build lasting relationships based on trust and reliability.
When you choose us as your oil casing and casing supplier in China, you can rest assured that you will receive top-notch products at competitive Prices. Our API 5CT Gr.L80-1 tubing is a cost-effective solution that helps you meet your operational needs without compromising quality. We understand the importance of staying within budget while maintaining high standards, and we’re here to support you in achieving your goals.
Chemical composition, Mass Fraction (%) | ||||||||||||||
grade | C | Mn | Mo | Cr | Ni | Cu | P | S | Si | |||||
Type | min | max | min | max | min | max | min | max | max | max | max | max | max | |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
H40 | — | — | — | — | — | — | — | — | — | — | — | — | 0.03 | — |
J55 | — | — | — | — | — | — | — | — | — | — | — | — | 0.03 | — |
K55 | — | — | — | — | — | — | — | — | — | — | — | — | 0.03 | — |
N80 | 1 | — | — | — | — | — | — | — | — | — | — | 0.03 | 0.03 | — |
N80 | Q | — | — | — | — | — | — | — | — | — | — | 0.03 | 0.03 | — |
R95 | — | — | 0.45 c | — | 1.9 | — | — | — | — | — | — | 0.03 | 0.03 | 0.45 |
L80 | 1 | — | 0.43 a | — | 1.9 | — | — | — | — | 0.25 | 0.35 | 0.03 | 0.03 | 0.45 |
L80 | 9Cr | — | 0.15 | 0.3 | 0.6 | 0.9 | 1.1 | 8 | 10 | 0.5 | 0.25 | 0.02 | 0.03 | 1 |
L80 | 13Cr | 0.15 | 0.22 | 0.25 | 1 | — | — | 12 | 14 | 0.5 | 0.25 | 0.02 | 0.03 | 1 |
C90 | 1 | — | 0.35 | — | 1.2 | 0.25 b | 0.85 | — | 1.5 | 0.99 | — | 0.02 | 0.03 | — |
T95 | 1 | — | 0.35 | — | 1.2 | 0.25 b | 0.85 | 0.4 | 1.5 | 0.99 | — | 0.02 | 0.03 | — |
C110 | — | — | 0.35 | — | 1.2 | 0.25 | 1 | 0.4 | 1.5 | 0.99 | — | 0.02 | 0.03 | — |
P110 | e | — | — | — | — | — | — | — | — | — | — | 0.030 e | 0.030 e | — |
Q125 | 1 | — | 0.35 | 1.35 | — | 0.85 | — | 1.5 | 0.99 | — | 0.02 | 0.01 | — | |
NOTE Elements shown shall be reported in product analysis. | ||||||||||||||
a The carbon content for L80 may be increased up to 0.50 % maximum if the product is oil-quenched or polymer-quenched. | ||||||||||||||
b The molybdenum content for Grade C90 Type 1 has no minimum tolerance if the Wall thickness is less than 17.78 mm. | ||||||||||||||
c The carbon content for R95 may be increased up to 0.55 % maximum if the product is oil-quenched. | ||||||||||||||
d The molybdenum content for T95 Type 1 may be decreased to 0.15 % minimum if the wall thickness is less than 17.78 mm. | ||||||||||||||
e For EW Grade P110, the phosphorus content shall be 0.020 % maximum and the sulfur content 0.010 % maximum. |
Tensile and Hardness Requirements | |||||||||
Grade | Yield Strength MPa | Tensile Strength | Hardness a,c | Specified Wall Thickness | Allowable Hardness Variation b | ||||
Type | Total Elongation Under Load | min MPa | max | ||||||
min | max | HRC | HBW | mm | HRC | ||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
H40 | — | 0.5 | 276 | 552 | 414 | — | — | — | — |
J55 | — | 0.5 | 379 | 552 | 517 | — | — | — | — |
K55 | — | 0.5 | 379 | 552 | 655 | — | — | — | — |
N80 | 1 | 0.5 | 552 | 758 | 689 | — | — | — | — |
N80 | Q | 0.5 | 552 | 758 | 689 | — | — | — | — |
R95 | — | 0.5 | 655 | 758 | 724 | — | — | — | — |
L80 L80 | 1 | 0.5 | 552 | 655 | 655 | 23 | 241 | — | — |
L80 | 9Cr 13Cr | 0.5 | 552 | 655 | 655 | 23 | 241 | — | — |
0.5 | 552 | 655 | 655 | 23 | 241 | — | — | ||
C90 | 1 | 0.5 | 621 | 724 | 689 | 25.4 | 255 | £12.70 | 3 |
12.71 to 19.04 | 4 | ||||||||
19.05 to 25.39 | 5 | ||||||||
³ 25.40 | 6 | ||||||||
T95 | 1 | 0.5 | 655 | 758 | 724 | 25.4 | 255 | £12.70 | 3 |
12.71 to 19.04 | 4 | ||||||||
19.05 to 25.39 | 5 | ||||||||
³ 25.40 | 6 | ||||||||
C110 | — | 0.7 | 758 | 828 | 793 | 30 | 286 | £12.70 | 3 |
12.71 to 19.04 | 4 | ||||||||
19.05 to 25.39 | 5 | ||||||||
³ 25.40 | 6 | ||||||||
P110 | — | 0.6 | 758 | 965 | 862 | — | — | — | — |
Q125 | 1 | 0.65 | 862 | 1034 | 931 | b | — | £12.70 | 3 |
12.71 to 19.04 19.05 | 4 | ||||||||
5 | |||||||||
a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method. | |||||||||
b No hardness limits are specified, but the maximum variation is restricted as a manufacturing control in accordance with 7.8 and 7.9. | |||||||||
c For through-wall hardness tests of grades L80 (all types), C90, T95 and C110, the requirements stated in HRC scale are for maximum mean hardness number. |
All in all, if you need a reliable supplier of oil casing and casing in China, then we are your best choice. With our high quality API 5CT Gr.L80-1 tubing and exceptional service, we are committed to meeting your specific requirements and exceeding your expectations. Choose us as your partner and we’ll ensure you get the best products and support for your oil and gas operations.