Method for Manufacturing and Delivery Status of Seamless Steel Pipe for Structural Usage (GB/T 8162-1999)
Seamless steel pipes are extremely common in structural applications as they are used for critical components for axial and torsional loads. Therefore, it is incredibly important that the fabrication and delivering of these steel pipes meet the highest quality standards. This article provides an overview of the GB/T 8162-1999 method for manufacturing and delivery status of seamless steel pipes for structural usage.
The GB/T 8162-1999 method requires that all steel used to create the pipes be verified and has a manufacturer certificate according to GB/T 2975. Additionally, the steel must meet certain conditions outlined in the standards such as being free from impurities, normal material composition, surface quality, tolerance, and free from mechanical damages. In terms of manufacturing, the method includes requirements for raw material quality control, weld quality control, quenching and tempering, welding, limiting imbalance force in the weld, and crack detection. Furthermore, specific dimensions must be met for the steel pipes such as wall thickness, the inner diameter, and the outer diameter.
When it comes to delivering, the quality of the pipes must be verified to ensure that they meet the parameters set out in the standards. The complexity and type of testing performed on the steel pipes depends on its application and can include testing such as mechanical testing, defect inspection, dimension, and hardness. As the method states, after the testing has been completed, the pipes should be color coated or painted and packed for shipping.
In conclusion, the GB/T 8162-1999 method for manufacturing and delivery status of seamless steel pipes for structural usage provides important guidelines for fabricators to ensure that their pipes meet the highest standards. Adherence to the method ensures effective performance when the steel pipes are put into applications such as wiring and pipelines. Additionally, the method provides specific requirements for the manufacturing of the pipes as well as what quality checks must be done before delivery. The overall goal is to ensure that the fabricated seamless steel pipes are safe for use in applications and will excel in performance.
