API 5CT Seamless steel casing and tubing
that serves as the tructural retainer,it can protect both subsurface and
well bore from collapsing and to allow drilling fluid to circulate and extraction.
Classification :
PRODUCT DETAILS
Product introduction
Casing Pipe is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore. It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing and to allow drilling fluid to circulate and extraction to take place. Steel Casing Pipes have smooth wall & minimum yield strength of 35,000 psi.
API 5CT standard oil casing plays an important role in preventing oil well from being damaged by shallow oil layer and supporting the transportation of oil and gas. What’s more, casing pipe can support the weight of the wellhead layer to prevent collapse. API 5CT casing pipe ensure the smooth progress of the whole drilling process, after that, transport oil and gas from drilling to ground.
Material:J55,K55,L80,N80,P110
Size: 2-1/2″ ,4 1/2″,5 1/2″,6 5/8″,7″ ,9 5/8″ to 20″ / OD 60mm to 508 mm
Wall thickness: 4-16mm
Length: R1(4.88m-7.62m)/R2(7.62m-10.36m)/R3(10.36m-14.63)
coupling: BTC (Buttress Thread Coupling)
STC (Stub(Short) Thread Connector),
LTC (Long Thread Connector)
NUE/EUE/VAM or no thread
Standard: API spec 5CT/ ISO11960
Certificates:API5L, ISO 9001:2008,SGS, BV,CCIC
Surface Treatment:External surface coating (black painted), mark as api 5ct stanard,varnish, oil
Dimension Tolerance:
| Types of steel tubes | Outer Diameter | Wall Thickness | |
| Cold-rolled tubes | Tube sizes(mm) | Tolerances(mm) | Tolerances(mm) |
| <114.3 | ±0.79 | -12.5% | |
| ≥114.3 | -0.5%,+1% | ||
Technical data
Chemical composition (Max%)
| Grade | Mfg.Process | Technique | C | Si | Mn | P | S | Ni | Cr | Mo | Others | |
| J55 | SMLS | Hot rolled/Cold drawn | - | - | - | 0.030 | 0.030 | - | - | - | - | |
| N80 | - | - | - | 0.030 | 0.030 | - | - | - | - | |||
| K55 | - | - | - | 0.030 | 0.030 | - | - | - | - | |||
| L80 | 0.43 | 0.45 | 1.90 | 0.030 | 0.030 | 0.25 | - | - | Cu 0.25 | |||
| P-110 | - | - | - | 0.030 | 0.030 | - | - | - | - | |||
| C90 | 0.35 | - | 1.00 | 0.20 | 0.010 | 0.99 | 1.20 | 0.75 | - | |||
| C95 | 0.45 | 0.45 | 1.90 | 0.030 | 0.030 | - | - | - | - | |||
| T95 | 0.35 | - | 1.20 | 0.20 | 0.010 | 0.99 | 0.40~1.50 | 0.25~0.85 | - | |||
Mechanical Properties:
| Standard codes | Models of steel tubes | Tensite strength(MPa) | Yield strength(MPa) | Elongation(%) | Hardness |
| API SPEC 5CT | J55 | ≥517 | 379~552 | check the table | |
| K55 | ≥517 | ≥655 | |||
| N80 | ≥689 | 552~758 | |||
| L80(13Cr) | ≥655 | 552~655 | ≤241HB | ||
| P110 | ≥862 | 758~965 |
Storage video
Factory appearance and appearance
The company mainly engaged in steel production, sales and other businesses. The main products include all kinds of steel plate, steel pipe, bar, profile and other materials and section steel. At the same time is a number of domestic large steel mill level agents, with a certain price advantage.

Packing and delivery
For many years, the company has been established, adhering to the purpose of "respecting contract, keeping faith, customer first, reputation first, quality first", adhering to the customer demand as the center, to "achieve what customers think, think what customers think" business philosophy, to "one sale, small profit, real price, timely delivery" business principle, we manage all kinds of specifications and materials of steel pipe and profile for customers.

Application field
The main supply fields are: aerospace, national defense equipment, military weapons, chemical industry, shipbuilding, nuclear energy, trains, containers, environmental protection, precision machining, auto parts, machinery, electronic products, molds, medical treatment Equipment, construction, decoration, etc.

CERTIFICATE OF HONOR
WELCOME TO INQUIRE
The company guarantees the quality of its products with its strong financial strength, advanced management experience and strict quality control system for incoming goods. Excellent products and good reputation are well-known all over the country, and have won the trust and support of major steel mills and customers. Welcome to inquire, negotiate or visit our company in person. Welcome to inquire, negotiate or visit our company in person.
COOPERATIVE PARTNER
FAQ
Q1:Will you offer samples?
A:Yes. We will provide samples according to your needs and send them out within three days after receiving payment.
Q2 : What product information do I need to provide?
A : Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.
Q3 : It's my first time to import steel products, can you help me with it?
A : Sure,we have agent to arrange the shipment, we will do it together with you.
Q4:Do you have the products in stock?
A:We have the products in stock. Also, we can produce for your order.
Q5:Do you offer after-sales services?
A : Of course. We have a perfect after-sales service system, if you have any questions, please feel free to contact us. We will do it to your satisfaction.
Q6:What kind of work does your company do?
A:Our company is a professional manufacturer. We mainly produce stainless steel plate/coil/round rod, carbon steel plate/coil,galvanized plate/coil, PPGI coil, roofing sheet and so on.
Q7:What are the advantages of your company?
A : We have international advanced production equipment, large factory buildings, strong company strength, perfect products and reliable quality.
Q8 : Are you a factory or trading company?
A : We are a professional steel factory with many years of experience, perfect manufacturing process, quality assurance!
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