API 5CT Oil Well Steel Grade

API 5CT Oil Well Steel Grade J55/ N80/ PUP JOINT

Main functions of CASING head
Support the gravity of each layer of casing except surface casing through suspension.
It bears the gravity of BOP assembly.
Improve the stability of drilling wellhead equipment.
To provide an outlet for releasing the pressure that may be stored between two layers of casing strings, or to pump fluid into the well (kill drilling fluid, water, high-efficiency fire extinguishing agent, etc.) in case of emergency.
Special drilling and production operations can be carried out, such as adding cement from the side hole to improve the cementing quality, and pressurizing from the side hole to balance the pressure in the TUBING during acid fracturing.

Casing is a large-diameter pipe that serves as the structural retainer for the walls of oil and gas wells or wellbore.

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

EASTSUN supply a lot W and X Series Casing material to 10 \" carbon steel oil casing pipe manufacturing, we ensure the material machinical propertities and straightness cutomer required. Pls see our material picture attached. We also do the threading to produce the finished 10 \" carbon steel oil casing pipe by our own factory, we supply the finished 10 \" carbon steel oil casing pipe to customer too.

Pls see our drilling 10 \" carbon steel oil casing pipe serise a follows:

"W" Design:       RW, EW, AW, BW, NW, HW, PW, SW, UW, ZW/HWT, PWT

Metric Series:    46, 56, 66, 76, 86, 101, 116, 131, 146

"X" Design:        RX, EX, AX, BX, NX, HX, PX, SX, UX, ZX

FAQ

Q1:  How long is your delivery time?

       According to the quantity of per size.Generally it is with 7 days if the goods are in stock,or it is 15-20 days if the goods are not in stock.

Q2: Do you provide samples ? is it free or extra ?

      Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q3: What is your terms of payment ?

      A: Payment<=1000USD, 100% in advance.

           Payment>=1000USD, 30% T/T in advance ,balance before shippment.

      B:100% L/C at sight.

      C:30% advance payment ,70% L/C at sight.