L80 3cr oil casing pipe
We have strict control procedures from raw material procurement to processing, from product delivery to after-sales service, to ensure that the quality of the products is the same,so that you can be more assured.we have established a sound cooperative relationship with Tianjin Pipe (Group) Corporation (TPCO) , Baotou Steel, Baosteel, Henggang steel ,Angang steel and other large-scale domestic steel plants to ensure the quality of raw materials and enough supplying channels to achieve a win-win situation.
DALIPU company has successively obtain a series of certificates such as the right to certificates such as the right to import and export,ISO9000, API Spec 5CT,and so on.
It serves Dagang, Liaohe, North China, Shengli, Xinjiang and other major oil fields and many well-know international oil service companies with high-quality products,as well as Saudi Arabia,the United Arab Emirates,the United States,the Netherlands,Singapore,Cannda,India,Sudan,Turkey,Kazakhstan,Ecuador and other countries and regions have wstablished long-term stable cooperative relations,and well received by customers.
L80 3cr oil casing pipe
Development background of non-API 13Cr series martensitic stainless steel oil casing
Research shows that for oil and gas wells containing CO2, 13Cr martensitic stainless steel should be used; for the coexistence of H2S and CO2, super 13Cr martensitic stainless steel, 22Cr-25Cr duplex stainless steel and even nickel-based corrosion resistant alloys must be used to meet the demand . Cr is an effective element to prevent CO2 corrosion. It can quickly form a dense and extremely thin Cr2O3 passivation film on the metal surface. As the Cr content increases, the effect of resistance to CO2 corrosion increases. The CO2 partial pressure is the main factor affecting the corrosion rate. The CO2 corrosion rate increases with the increase of the CO2 partial pressure (Figure 1). In engineering, the CO2 partial pressure of 0.02MPa is generally determined as the critical value for CO2 corrosion. Oil well temperature generally increases with increasing well depth. In most cases, the increase in CO2 partial pressure and temperature increase are synchronized.
|thread type||LTC,STC,BTC,premium connection and high performance thread|
|Production Flow Chart|
Angle steel frame
Q1: How long is your delivery time?
According to the quantity of per size.Generally it is with 25 days
Q2: When can I get the price？
We usually quote within 24 hours after getting your detailes requirements,like size,quantity etc.If it is an urgent order,you can call us directly
Q3: What is your terms of payment ?
30% T/T in advance ,balance before shippment.
Q4: What is your terms of delivery ?
We accept FOB,CFR,CIF,EXW,etc.You can choose the most convenient way for you.