Plastic-coated steel pipe is a new type of pipe material recently developed in China. It has a plastic-coated protective layer on the inside and outside, and a composite structure of reinforced welded steel pipe or seamless pressure-bearing steel pipe in the middle, which overcomes the easy rust and

The oil and casing installation process mainly includes pre-installation preparation, drilling and trimming, pipe running operations, etc.(1) Inspection and preparation before drilling the oil casing and machine toolsNo. 1. Quality inspection of oil and casing strings:1) Check whether the on-site oi

OCTG is a tube and pipe which is used in the production of oil and gas. This pipe is used both onshore and offshore for the production of oil and gas. Oil Country Tubular Goods is a collection of rolled metal products such as drill pipe, casing and tubing, line pipe, couplings, connections, and acce

(1) The difference between hot working and cold working: hot rolling is hot working, and cold drawing is cold working. The main difference: is that hot rolling is rolling above the recrystallization temperature, cold rolling is rolling below the recrystallization temperature, and cold rolling is som