News
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Detection Technology of Large Diameter Seamless Steel Pipe
In the field of detection technology, large diameter seamless steel pipe refers to the diameter larger than 160 mm. Large-diameter seamless steel pipe is important material ofpetroleum, chemical, thermal, boiler, machinery, and hydraulic industry, etc. With the development of national economy, o...Read more -
Cold-formed steel
Cold-formed steel refers to the use plates or strip bent in a cold state of the various cross-sectional shape of the finished steel. Cold-formed steel is an economical lightweight thin-walled steel cross-section, also called cold-formed steel profiles. Bending section steel is the main material o...Read more -
Carbon steel pipe corrosion type
Shot blasting: spray steel shot rust Sa5 restraint, rust, metal appearance of heavily exposed silver-white metallic luster, surface roughness of 40 ~ 70μm. Spray coating: strengthen the special grade coal tar epoxy, or a primer, cheek 5, the center clip four layers of epoxy glass cloth, 0.9 ~~ 1m...Read more -
Api pipe line
API pipe line with carbon steel API pipeline tube belong to ANSI Petroleum standards. The function of line pipe is to pump the oil, gas, water from field to the refinery. Pipeline tubes include seamless tube and welded tube. The development of pipeline steel plate technology and welding technique...Read more -
Annealing process and purpose of the oxygen annealing carbon steel pipe
Anaerobic annealing carbon steel pipe is that cut off oxygen to the environment to process of carbon steel pipe, carbon steel pipe applied to the annealing process, so here is to pay attention to the annealing details anaerobic annealing, recrystallization annealing applied to the balance of heat...Read more -
Defects and treatment of cold drawn steel pipe
Defects and treatment of cold drawn steel pipe is as following: 1, folding: pulling system, cold drawn steel pipe inside and outside surfaces rendered straight or spiral direction of folding, the emergence of local or long pass on the pipe. The cause: the surface of the pipe material folded or fl...Read more