Oil tubing

Oil tubing Definition

Used inside of casing pipe, after completion of drilling, it is a kind of pipeline that transport the oil or gas from hydrocarbon reservoir to the earth’s surface, during which process it withstand the pressure of generated in mining. Diameter of the tubing is usually from 60.3mm to 114.3mm.

Oil tubing Parameter

There are several process forms of the oil tube end portion, we give the dimension table as below.

Mechanical property table

Standard Grade Tensile Strength(MPa) Yield Strength(MPa) Elongation(%) Hardness  
API 5CT J55 ≥517 379~552 0.5%  
  K55 ≥655 379~552 0.5%  
  N80 ≥689 552~758 0.5%  
  L80(13Cr) ≥655 552~655 0.5% ≤241HB
  P110 ≥862 758~965 0.6%

Advantages of us

1.Professional manufacturer for seamless oil casing and tubing since 2006, we can ensure the factory price and best quality for you. As the leading manufacturer in our area, we are one of earliest mill for seamless steel pipes.
2.We can produce and supply full range and every size for steel pipes, with the development, we expand our production scale from pipes only for oil and gas industry into various kinds of usage, now we can produce and supply steel pipes applied for more than 20 industries, taking petroleum, natural gas, chemical and fertilizer, heater and boiler, coal mining, automobile and truck fittings, construction, food, ship building, mechanical machining for examples.
3.Now we invited steel pipe related goods production lines, we can make deep machining on our steel pipes; also we can produce and supply the related goods. The deep machining for steel pipes consist of cutting, chamfering, polishing, threading, coupling producing, hot dipped galvanized, hot dipped aluminized, anti-corrosive coating, pipe bending, screen pipe making,
Round shape into rectangular, pipe size expanding, and steel pipe phosphating, you can go to our “product-pipe intensive process” page of our website for more information. The related steel products include pipe flanges, elbow, reducer, steel bars, rebar, steel plate, sheet, strip materials, rods, and casting parts.
4.More than 10years team work and export experience. We have one export team with more than 10 employees, all of them accumulated both good experiences on exporting and also substantial acknowledges in steel industry. We exported the products into more than 30 countries and religions including: like Iran, India, Croatia, Slovakia, Costa Rica, Bengal, Singapore, Egypt, Italy, Hongkong, Taiwan, Korea, Malaysia, Japan, Australia, Brazil and Indonesia. Due to the good experience on exporting, we can successfully deal with all the unexpected matter during the whole export procedures.


1What is your paying terms?
Our usual paying terms are 30%TT as deposit and balance paid after seeing copy of bill of loading. For clients cooperated for more than one year, we accept 20% prepay. Beside we do business also under D/P and LC terms.
2How long is your delivery time?
For the goods we have in stocks, we deliver the goods within 5days. If it is a production order with volume not above 200tons, the delivery time will usually be within 25days after sealing contract. And the delivery time shall be slightly longer for order volume above 200tons.
3Can you do partial shipment?
We will follow client request to do partial shipment or not. Partial shipment is not a problem for us.
4What is your Minimum Order Quantity?
For goods in stocks we supply starting with one piece. Shall it is a production order, the MOQ is 3tons. Please be noted price based on MOQ will be slight higher than FCL condition due to higher unit cost.
5Before cooperation we want a sample for inspecting of quality, is that okay?
We can provide a free sample for you shall sample value not above 30USD, you only need to pay the express charge. For a sample valued more than 30USD, the express charge and just one half of sample is on the account of you, and we afford the other half.
6What is the mode of transportation?
Ocean freight is the most important shipping way, and we choose the ship line based on soonest and earliest shipping time, rather than cheaper cost; or we follow clients’ instruction if there is one. Also railways will be chosen by us when it is more convenient.