Corrugated culvert, also known as metal corrugated culvert or steel corrugated culvert, refers to the threaded bellows laid in the culvert under the road and railway.

H-shaped steel is a kind of economically efficient profile with more optimized section area distribution and more reasonable strength-to-weight ratio, which is named because its section

Cold-rolled steel sheet is the abbreviation of ordinary carbon structural steel cold-rolled sheet, commonly known as cold plate. It is made of ordinary carbon structural steel

Introduction Thermal insulation pipe is the abbreviation of thermal insulation pipe, thermal insulation pipe for liquid, gas and other media transport, in petroleum, chemical, aerospace, military,

Manufacturing technique Spiral welded pipe unit is used for the production of diameter (89 ~ 2450)mm×(0.5 ~ 25.4)mm, length of 6 ~ 35m large diameter steel

manufacturing process Straight seam submerged arc welded pipe is made of steel plate, while spiral welded pipe is made of hot rolled coil. The rolling process