API oil casing and tubing oil well drill steel pipe for oil and gas project

Specification for oil casing: 4-1/2 inch---20 inch, buckle type: STC, LTC, BTC,., According to various sizes of customer orders, production of oil casing tubing joint.
Material: H40, J55, K55, N80, L80, C-90, C95, T95, P110, Q125,13Cr-80,13Cr-110, super 13Cr, etc..

J55 oil casing is an important equipment for oil drilling equipment, which mainly include drilling pipe, tube and casing, drill collar and small diameter drilling pipe etc.. Domestic casing to geological drilling with steel after hot rolling or cold drawn steel made by "geological" (DZ) said that the steel grade are commonly used DZ40, DZ55, DZ753.

(1) the main importing countries are: Germany, Japan, Romania, Czech, Italy, the United Kingdom, Austria, Switzerland, the United States, Argentina, and Singapore. Import standards refer to the American Petroleum Institute standard 5AX, API5A, 5AC. Steel grade is H-40, J-55, N-80, P-110, C-75, C-95, etc.. Specifications are mainly 139.77.72R-2177.89.19R-2244.58.94R-2244.510.03R-2244.511.05R-2, etc..
(2) API provides three kinds: that is, the R-1 is 4.88 ~ 7.62m, R-2 for 7.62 ~ 10.36m, R-3 for 10.36m to longer.

1) domestic casing according to the provisions of SY/T6194-96, the length of the casing is not fixed, the range of 8-13m. But not less than 6m of the casing can be provided, the number shall not exceed 20%.
(2) the casing inside and outside surface shall not have folding, crack, delamination, crack, rolling reduction and scarring. These defects should be completely removed, the depth shall not exceed 12.5% of the nominal wall thickness.
(3) except coupling surface without folding, crack, delamination, crack, rolling reduction, surface defects.
(4) casing and coupling thread surface should be smooth, burr, tear and impact strength enough to interrupt threads and other defects close connection not allowed.

FAQ

Q: How long is your delivery time?
A: If there are stocks, take 5-10days to delivery for small quantity, and 30-40days for bigger quantity;If no stock, depends on the steel billet purchase,
Q: What about your payment term?
A: Usually T/T or L/C, 30% deposit and 70% before delivery.
Q: what about your standard delivery date
A: 30 days after receiving deposit .We are pleased to provide you with best services in consulting, purchasing,transportation, installation, and after-sales services.

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