Material Standards: The raw materials used for spiral welded pipes must comply with corresponding national or industry standards, such as GB/T700, GB/T1591, etc. These standards stipulate critical indicators of steel, including its chemical composition and mechanical properties.
Quality Certification: Raw materials should be accompanied by quality certificates that indicate information such as material type, specifications, and performance to ensure traceability and compliance.
Inspection and Acceptance: Incoming raw materials undergo rigorous quality inspections, including tests on chemical composition, mechanical properties, and visual quality, to ensure that the material quality meets standard requirements.
