N80Q/N801 oil casing pipe is a kind of large diameter pipes, included in API SPEC 5CT...

N80 casing for the walls of oil Company Hebei Borun Petroleum Pipe Manufacturing Co....

API 5CT/5Bsteel oil pipe tubing,casing 1.OD:1'-20' 2.carbon seamless steel pipe 3...

Oilfield Casing Pipes/Carbon Seamless Steel Pipe/Oil Drilling Tubing Pipe Size ...

The steel grades of common oilfield API-5CT casing pipe include J55, K55, N80-1, N80Q...

API 5CT J55/K55/N80/P110 Casing Coupling 4 1/2" to 20" Api Casing Coupling ...

API 5CT J55/K55/N80/P110 Casing Coupling 4 1/2" to 20" Api Casing Coupling ...

Product: top quality 13 Chrome 3 1/2 eue casing /tubing coupling Material: H40.J55...

FROM 1.09 "-20" Standard according to API 5CT Length Random length, o...

Api Casing Coupling Size 4 1 / 2-20in Thread VAM NU EU STC LTC BTC NPT ...

Api Casing Coupling Size 4 1 / 2-20in Thread VAM NU EU STC LTC BTC NPT ...

Api Casing Coupling Size 4 1 / 2-20in Thread VAM NU EU STC LTC BTC NPT ...