The casing string in the hole drilling, used to prevent the formation of formation fluid flow and collapse.

The tubing string into the production casing, components of underground reservoir and the ground channel, control of crude oil and natural gas flow.

Casing is a wide range 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, to allow drilling fluid to circulate, and extraction to take place
Steel casing pipes have smooth wall and minimum yield strength of 35,000psi

Tubing: tubing is pipe used for the transportation of crude oil and natural gas from an oil or gas layer to the surface after drilling is complete
It is made to withstand the pressure generated from the extraction process
Tubing is manufactured in the same way as casing, except that an additional process known as "upsetting" is applied to thicken the pipes
Process: ERW and seamless
Standard: API 5CT
Certificate: casing: LTC, STC, BTC, VAM
Tubing: NUE, EUE

Out diameter:

Casing: OD 4 1/2"- 20" (114.3mm-508mm)
Tubing: OD 2 3/8" - 4 1/2" (60.3mm-114.30mm)
Wall thickness: 0. 205"- 0.635"
Length: R1 (4.88mtr-7.62mtr), R2 (7.62mtr-10.36mtr), R3 (10.36mtr or longer)
Steel grade: H-40, J55, K-55, N-80, C-75, L-80, C-90, T-95, Q-125
Surface: corrosion proofing water based paint
End: beveled, square cut and pipe protection cap especially for casing and tubing
Heat treatment: normalized, quencher+temper

Sally Zhang

Tel:0086 13515252285

Fax:0519 85268163

Mail: oilfield.sallu@yahoo.com

Skype:sally77778

Web:http://www.oilfield-octg.com/

      Changzhou Oilfield Petroleum Equipment Co., Ltd. is located in Changzhou high tech Industrial Development Zone, with the advantage be richly endowed by nature. It is east to Shanghai, Wuxi, West Nanjing, North pillow Yangtze River, has the lead in all directions of traffic advantage, the Beijing Shanghai High-speed Rail, Shanghai Nanjing Expressway through the city, west of Changzhou airport, traffic is very convenient, is apart from the Shanghai port only 150 kilometers.

      This is a company for many years engaged in the special petroleum pipe production and sales company, main products include oil well pipe (casing tubing, drill pipe and line pipe) and its accessories (Coupling, drill pipe and drill pipe joints), all kinds of seamless steel pipe and coupling stock. Tubing and product specifications: 1"9 ~～20";; steel grade: H40, J55, N80, K55, C95 (R95), T95, P110, Q125 and some high collapsing strength, non standard steel grade oil casing corrosion and collar, for example: 80S, 95SS, 110TS, SC, LC, BC type of thread, special button and buckle type production according to customer requirements; drill pipe specifications: 2-3 / 8 ～6-5 / 8"; and some less than 2 - 3 / 8"; the product specifications, including direct type small drill pipe. Grade: E75, X95, G105, S135; pipeline products range: 1 / 4" ～ 12-3 / 4";;;, steel grade: B, X42, X52, X56, X60, X65, X70; PSL1; PSL2; Product grades: drill pipe: NC26, NC31, NC38, NC46, NC50, 5-1/2FH, 6-5/8FH etc.

     We have a variety of senior technical personnel and excellent technical staff, with CNC sophisticated processing equipment (10 Mori Seiki machine; 2 Danuobate machine) and a full set of test equipment, pipe processing experience is rich in oil well. Annual output of various coupling of 2800000 or more, 80000 of drill pipe joint. With the pursuit of the cause and the courage to challenge themselves and forever, my company's products have been widely applied to various fields ( Daqing, Xinjiang and Changqing Oilfield), some products are also exported to Canada, the United Arab Emirates, USA, Singapore, Russia, Turkey and other countries and regions, by the favor and praise of users at home and abroad the. We will work with you hand in hand together, create a better tomorrow.

     Our aim is: people-oriented, scientific management, quality first, service first, mutual benefit and win-win. Warmly welcome friends from all circles to visit and give guidance, and seek common development.