The weld grade requirements for internal and external epoxy powder-coated straight seam steel pipes are generally related to the pipe use and working environment. There will be corresponding requirements in engineering design and standard specifications.
For example, for pipelines transporting corrosive media such as oil, gas, and chemicals, the welds are generally required to pass X-ray or ultrasonic testing, and relevant inspections and monitoring are required. For some general water supply and drainage pipes, etc., the welding grade requirements are relatively low, and only the sealing and durability of the pipes need to be ensured.
During construction, welding processes that comply with national standards or industry standards are generally used according to engineering design and specification requirements, and relevant inspections and records are conducted to ensure that the weld quality of plastic-coated steel pipes meets the requirements.
Post time: Feb-22-2024