Forever Steel Manufacturing Co., Ltd is a professional steel pipe and pipe fitting manufacturer and exporter focused on project supply for oil and gas, water transmission, marine, piling, structural, and industrial applications. The company’s main product range includes seamless steel pipes, ERW steel pipes, SSAW pipes, LSAW pipes, coated steel pipes, API 5CT casing and tubing, steel plates, and pipe fittings. Forever Steel also supports buyers with cutting, threading, welding, painting, inspection coordination, documentation control, and export delivery. (forever-steels.com)

In OCTG supply, Forever Steel offers API 5CT casing pipe and API 5CT tubing pipe for drilling and production applications. The casing range shown on the current site covers outside diameters from 114.3 mm to 508 mm, wall thickness from 5.21 mm to 16.13 mm, and length ranges R1, R2, and R3. Listed API 5CT grades include J55, K55, N80-1, N80-Q, L80-1, L80-9Cr, L80-13Cr, C90, T95, P110, and Q125, with standard connections such as STC, LTC, and BTC, plus premium connection support for more demanding well conditions. 

For tubing, the site currently lists API 5CT tubing from 1.050 in to 4-1/2 in (26.67 mm to 114.3 mm), covering common thread types such as NU, EU, IJ, PH6, and FJ. The published grade range includes J55, K55, N80, L80, C90, T95, C110, P110, and Q125, making it suitable for production tubing, injection service, and corrosive or higher-pressure environments. 

In line pipe supply, Forever Steel provides API 5L seamless line pipe for oil, gas, water, and fluid transmission. The product page lists outer diameters from 10.3 mm to 1219.2 mm, wall thickness from 1.65 mm to 60 mm, and grades including API 5L Grade B, X42, X52, X60, X65, and X70. The same page also lists related standards such as ASTM A106 Grade B, ASTM A53 Grade A/B, EN 10216-2, EN 10305-1, and EN 10210 grades S235JR, S275JR, and S355JR. 

With project experience across oil and gas, natural gas distribution, onshore and offshore pipeline, OCTG projects, water transmission, offshore wind, geothermal, port infrastructure, and chemical processing, Forever Steel positions itself as a reliable long-term partner for buyers who need stable quality, responsive communication, technical coordination, and controlled shipment execution.